Question 1:
What is the Websites code for the country Mongolia?
A.
MN
B.
ML
C.
MG
D.
MO
Answer: _________
Question 2:
What was the clock speed of the original IBM PC?
A.
Less than 5 MHz
B.
10 MHz
C.
8 MHz
D.
Just over 16 MHz
Answer: _________
Question 3:
What is NAT?
A.
Network Address Translation
B.
Network Administration Tool
C.
Novell Address Transfer
D.
Newly Added Technology
Answer: _________
Question 4:
What is not always necessary for accessing the Web?
A.
A Web browser
B.
A connection to an Internet Access Provider
C.
A computer
D.
A modem
Answer: _________
Question 5:
On what date was the debut of the first IBM Personal Computer?
A.
August 12, 1981
B.
January 21 1979
C.
August 21, 1980
D.
January 12, 1982
Answer: _________
Question 6:
A computer virus that actively attacks an anti-virus program or programs in an effort to prevent detection is...
A.
Worm
B.
Retrovirus
C.
Trojan
D.
Ghost virus
Answer: _________
Question 7:
What is the Websites code for the country Spain?
A.
SI
B.
SP
C.
ES
D.
SN
Answer: _________
Question 8:
The first web server was built in:
A.
1990 in Geneva, Switzerland
B.
1985 in Berkeley, California
C.
1988 in Cambridge, Massachusetts
D.
1947 in Berningham, UK
Answer: _________
Question 9:
In what year did the Symantec Corporation first release Norton Antivirus?
A.
1990
B.
1995
C.
1988
D.
1997
Answer: _________
Question 10:
The IBM PC-XT was the first to include a hard drive. What was the capacity of this disk?
A.
20 MB
B.
1.44 MB
C.
10 MB
D.
750 KB
Answer: _________
Question 11:
What is the Websites code for the country Colombia?
A.
CO
B.
CM
C.
CL
D.
CB
Answer: _________
Question 12:
Which of the following word processors came first?
A.
WordPerfect
B.
Lotus Notes
C.
MS Word
D.
WordStar
Answer: _________
Question 13:
The invention of the transistor, or semiconductor, was one of the most important developments leading to the personal computer revolution. What company invented the transistor in 1947?
A.
International Business Machines
B.
MITS
C.
Xerox
D.
Bell Laboratories
Answer: _________
Question 14:
What is TTL?
A.
Technical Talk Language
B.
Transparent Transfer Layer
C.
Time To Live
D.
True Technology Lives
Answer: _________
Question 15:
What is the Websites code for the country Bulgaria?
A.
BU
B.
BR
C.
BL
D.
BG
Answer: _________
Question 16:
What does PPTP stand for?
A.
Point to Point Transmission Protocol
B.
Point to Point Transfer Protocol
C.
Point to Point Tunneling Protocol
D.
Point to Point Traffic Protocol
Answer: _________
Question 17:
According to CNN, how much did Internet traffic increase between 1994 and 1996?
A.
Two times
B.
Five times
C.
Ten times
D.
Twenty-five times
Answer: _________
Question 18:
In 1983, which person was the first to offer a definition of the term 'computer virus'?
A.
McAfee
B.
Smith
C.
Cohen
D.
Norton
Answer: _________
Question 19:
What is the World Wide Web?
A.
A computer game
B.
A software program
C.
The part of the Internet that enables information-sharing via interconnected pages
D.
Another name for the Internet
Answer: _________
Question 20:
What is the Websites code for the country United Kingdom?
A.
GB
B.
UK
C.
EN
D.
EG
Answer: _________
Question 21:
What's a web browser?
A.
A kind of spider
B.
A computer that stores WWW files
C.
A person who likes to look at websites
D.
A software program that allows you to access sites on the World Wide Web
Answer: _________
Question 22:
"https://www.examveda.com" - is an example of what?
A.
A URL
B.
An access code
C.
A directory
D.
A server
Answer: _________
Question 23:
How many bits in a byte?
A.
4
B.
8
C.
16
D.
32
Answer: _________
Question 24:
How do you subscribe to an Internet mailing list?
A.
Contact your Internet service provider
B.
Send e-mail to the list manager
C.
Telephone the mailing list webmaster
D.
Send a letter to the list
Answer: _________
Question 25:
Computers calculate numbers in what mode?
A.
Decimal
B.
Octal
C.
Binary
D.
None of the above
Answer: _________
Question 26:
What is an FET?
A.
Farad Effect Transformer
B.
Field Effect Transformer
C.
Field Effect Transistor
D.
French Energy Transfer
Answer: _________
Question 27:
The speed of your net access is defined in terms of...
A.
RAM
B.
MHz
C.
Kbps
D.
Megabytes
Answer: _________
Question 28:
How many diodes are in a full wave bridge rectifier?
A.
8
B.
2
C.
4
D.
3
Answer: _________
Question 29:
The "desktop" of a computer refers to:
A.
The visible screen
B.
The area around the monitor
C.
The top of the mouse pad
D.
The inside of a folder
Answer: _________
Question 30:
Which of these is a search engine?
A.
FTP
B.
Google
C.
Archie
D.
ARPANET
Answer: _________
Question 31:
Sometimes computers and cache registers in a foodmart are connected to a UPS system. What does UPS mean?
A.
United Parcel Service
B.
Uniform Product Support
C.
Under Paneling Storage
D.
Uninterruptable Power Supply
Answer: _________
Question 32:
Who co-founded Hotmail in 1996 and then sold the company to Microsoft?
A.
Shawn Fanning
B.
Ada Byron Lovelace
C.
Sabeer Bhatia
D.
Ray Tomlinson
Answer: _________
Question 33:
'.TMP' extension refers usually to what kind of file?
A.
Compressed Archive file
B.
Image file
C.
Temporary file
D.
Audio file
Answer: _________
Question 34:
In the UK, what type of installation requires a fireman's switch?
A.
Neon Lighting
B.
High Pressure Sodium Lighting
C.
Water Features
D.
Hotel Rooms
Answer: _________
Question 35:
The electromagnetic coils on the neck of the picture tube or tubes which pull the electron beam from side to side and up and down are called a...?
A.
Transformer
B.
Yoke
C.
Capacitor
D.
Diode
Answer: _________
Question 36:
In the United States the television broadcast standard is?
A.
PAL
B.
NTSC
C.
SECAM
D.
RGB
Answer: _________
Question 37:
In a color television set using a picture tube a high voltage is used to accelerate electron beams to light the screen. That voltage is about?
A.
500 volts
B.
5 thousand volts
C.
25 thousand volts
D.
100 thousand volts
Answer: _________
Question 38:
The transformer that develops the high voltage in a home television is commonly called as?
A.
Tesla coil
B.
Flyback
C.
Yoke
D.
Van de Graaf
Answer: _________
Question 39:
Which consists of two plates separated by a dielectric and can store a charge?
A.
Inductor
B.
Capacitor
C.
Transistor
D.
Relay
Answer: _________
Question 40:
What do we call a collection of two or more computers that are located within a limited distance of each other and that are connected to each other directly or indirectly?
A.
Inernet
B.
Interanet
C.
Local Area Network
D.
Wide Area Network
Answer: _________
Question 41:
Who is largely responsible for breaking the German Enigma codes, created a test that provided a foundation for artificial intelligence?
A.
Alan Turing
B.
Jeff Bezos
C.
George Boole
D.
Charles Babbage
Answer: _________
Question 42:
Who developed Yahoo?
A.
Dennis Ritchie & Ken Thompson
B.
David Filo & Jerry Yang
C.
Vint Cerf & Robert Kahn
D.
Steve Case & Jeff Bezos
Answer: _________
Question 43:
Made from a variety of materials, such as carbon, which inhibits the flow of current...?
A.
Choke
B.
Inductor
C.
Resistor
D.
Capacitor
Answer: _________
Question 44:
The most common format for a home video recorder is VHS. VHS stands for...?
A.
Video Home System
B.
Very high speed
C.
Video horizontal standard
D.
Voltage house standard
Answer: _________
Question 45:
What does VVVF stand for?
A.
Variant Voltage Vile Frequency
B.
Variable Velocity Variable Fun
C.
Very Very Vicious Frequency
D.
Variable Voltage Variable Frequency
Answer: _________
Question 46:
What frequency range is the High Frequency band?
A.
100 kHz
B.
1 GHz
C.
30 to 300 MHz
D.
3 to 30 MHz
Answer: _________
Question 47:
The first step to getting output from a laser is to excite an active medium. What is this process called?
A.
Pumping
B.
Exciting
C.
Priming
D.
Raising
Answer: _________
Question 48:
What is the relationship between resistivity r and conductivity s?
A.
R = s 2
B.
R = s
C.
R > s
D.
R = 1/s
Answer: _________
Question 49:
Which motor is NOT suitable for use as a DC machine?
A.
Permanent magnet motor
B.
Series motor
C.
Squirrel cage motor
D.
Synchronous motor
Answer: _________
Question 50:
A given signal's second harmonic is twice the given signal's __________ frequency?
A.
Fourier
B.
Foundation
C.
Fundamental
D.
Field
Answer: _________
Question 51:
Hardware devices that are not part of the main computer system and are often added later to the system.
A.
Peripheral
B.
Clip art
C.
Highlight
D.
Execute
Answer: _________
Question 52:
On which of the following sites can you set up your email account:
A.
www.linux.org
B.
www.gre.org
C.
www.syvum.com
D.
www.hotmail.com
Answer: _________
Question 53:
The main computer that stores the files that can be sent to computers that are networked together is:
A.
Clip art
B.
Mother board
C.
Peripheral
D.
File server
Answer: _________
Question 54:
How can you catch a computer virus?
A.
Sending e-mail messages
B.
Using a laptop during the winter
C.
Opening e-mail attachments
D.
Shopping online
Answer: _________
Question 55:
In which decade was the first solid state integrated circuit demonstrated?
A.
1950s
B.
1960s
C.
1970s
D.
1980s
Answer: _________
Question 56:
A DV camcorder is:
A.
Capable of creating video in HDTV
B.
Used to create digital video
C.
Limited to the Direct Video format
D.
A Denon Video brand product
Answer: _________
Question 57:
What are the two terminals of a diode called?
A.
Pentode and Triode
B.
Gate and Drain
C.
Drain and Source
D.
Anode and Cathode
Answer: _________
Question 58:
A coating of dust on a computer's main circuit boards has this probable consequence
A.
Overheating
B.
Short circuits
C.
Slower hard disk
D.
None
Answer: _________
Question 59:
How many terminals does a BJT have?
A.
1
B.
5
C.
4
D.
3
Answer: _________
Question 60:
Google is a:
A.
Search Engine
B.
Number in Math
C.
Directory of images
D.
Chat service on the web
Answer: _________
Question 61:
'.JPG' extension refers usually to what kind of file?
A.
System file
B.
Animation/movie file
C.
MS Encarta document
D.
Image file
Answer: _________
Question 62:
What does AM mean?
A.
Angelo marconi
B.
Anno median
C.
Amplitude modulation
D.
Amperes
E.
Angelo marconi
F.
Anno median
G.
Amplitude modulation
H.
Amperes
Answer: _________
Question 63:
In what year was the "@" chosen for its use in e-mail addresses?
A.
1976
B.
1972
C.
1980
D.
1984
Answer: _________
Question 64:
'.TXT' extension refers usually to what kind of file?
A.
Text File
B.
Image file
C.
Audio file
D.
Adobe Acrobat file
Answer: _________
Question 65:
What was the first ARPANET message?
A.
lo
B.
Hello World
C.
cyberspace, the final frontier
D.
Marry had a little lamb.
Answer: _________
Question 66:
The NTSC (National Television Standards Committee) is also used in the country of...?
A.
Japan
B.
France
C.
Germany
D.
England
Answer: _________
Question 67:
"FET" is a type of transistor, Its full name is ________ Effect Transistor?
A.
Field
B.
Factor
C.
Flash
D.
Force
Answer: _________
Question 68:
What are three types of lasers?
A.
Gas, metal vapor, rock
B.
Pointer, diode, CD
C.
Diode, inverted, pointer
D.
Gas, solid state, diode
Answer: _________
Question 69:
What will a UPS be used for in a building?
A.
To provide power to essential equipment
B.
To monitor building electricity use
C.
To carry messages between departments
D.
To control lighting and power systems
Answer: _________
Question 70:
Who built the world's first binary digit computer: Z1?
A.
Konrad Zuse
B.
Ken Thompson
C.
Alan Turing
D.
George Boole
Answer: _________
Question 71:
The letters, "DOS" stand for...
A.
Data Out System
B.
Disk Out System
C.
Disk Operating System
D.
Data Operating System
Answer: _________
Question 72:
What does CPU stand for?
A.
Cute People United
B.
Commonwealth Press Union
C.
Computer Parts of USA
D.
Central Processing Unit
Answer: _________
Question 73:
Which of these is a valid e-mail address?
A.
professor.at.learnthenet
B.
www.learnthenet.com
D.
professor@learnthenet
Answer: _________
Question 74:
Which device can be used to store charge?
A.
Transistor
B.
Diode
C.
Capacitor
D.
Resistor
Answer: _________
Question 75:
Modem stands for:
A.
Modulator Demodulater
B.
Monetary Devaluation Exchange Mechanism
C.
Memory Demagnetization
D.
Monetary Demarkation
Answer: _________
Question 76:
What is the difference between the Internet and an intranet?
A.
One is public, the other is private
B.
One is safer than the other
C.
One can be monitored, the other can't
D.
None of the above
Answer: _________
Question 77:
In a Digital circuit, what is 1 'AND' 1?
A.
0
B.
1
C.
2
D.
4
Answer: _________
Question 78:
Your computer has gradually slowed down. What's the most likely cause?
A.
Overheating
B.
Your processor chip is just getting old
C.
Adware/spyware is infecting your PC
D.
You dropped a sandwich in your computer
Answer: _________
Question 79:
In which decade was the transistor invented?
A.
1940s
B.
1950s
C.
1960s
D.
1980s
Answer: _________
Question 80:
A JPG is:
A.
A Jumper Programmed Graphic
B.
A format for an image file
C.
A type of hard disk
D.
A unit of measure for memory
Answer: _________
Question 81:
The "home page" of a web site is:
A.
The largest page
B.
The last page
C.
The first page
D.
The most colorful page
Answer: _________
Question 82:
ROM stands for:
A.
Royal Ontario Museum
B.
Read Only Memory
C.
Read on Monday
D.
Real Obsolute Memory
Answer: _________
Question 83:
HTML is used to
A.
Plot complicated graphs
B.
Create a webpages
C.
Translate one language into another
D.
Solve a equations
Answer: _________
Question 84:
In which decade was the telegraph invented?
A.
1810s
B.
1840s
C.
1870s
D.
1890s
Answer: _________
Question 85:
Another word for the CPU is:
A.
Execute
B.
Microprocessor
C.
Micro chip
D.
Decode
Answer: _________
Question 86:
What would you use for immediate, real-time communication with a friend?
A.
Instant Messenging
B.
E-Mail
C.
Usenet
D.
A mailing list
Answer: _________
Question 87:
What kind of data can you send by e-mail?
A.
Audio
B.
Pictures
C.
Video
D.
All of the above
Answer: _________
Question 88:
When discussing technology, a hot spot is...
A.
A small overheated area on a CPU
B.
A place served by public wireless access
C.
Jargon for an X-rated Web site
D.
A faulty area in the programming code
Answer: _________
Question 89:
In which decade was the Internet first implemented?
A.
1940s
B.
1950s
C.
1960s
D.
1980s
Answer: _________
Question 90:
In which decade was the telephone invented?
A.
1850s
B.
1860s
C.
1870s
D.
1880s
Answer: _________
Question 91:
In which year was MIDI(dress) introduced?
A.
1987
B.
1983
C.
1973
D.
1977
Answer: _________
Question 92:
What does the term PLC stand for?
A.
Programmable Lift Computer
B.
Program List Control
C.
Programmable Logic Controller
D.
Piezo Lamp Connector
Answer: _________
Question 93:
When measuring the characteristics of a small-signal amplifier, say for a radio receiver, one might be concerned with its "Noise..."?
A.
Fundamental
B.
Fall
C.
Force
D.
Figure
Answer: _________
Question 94:
'DB' computer abbreviation usually means ?
A.
Database
B.
Double Byte
C.
Data Block
D.
Driver Boot
Answer: _________
Question 95:
'.INI' extension refers usually to what kind of file?
A.
Image file
B.
System file
C.
Hypertext related file
D.
Image Color Matching Profile file
Answer: _________
Question 96:
The sampling rate, (how many samples per second are stored) for a CD is...?
A.
48.4 kHz
B.
22,050 Hz
C.
44.1 kHz
D.
48 kHz
Answer: _________
Question 97:
Who created Pretty Good Privacy (PGP)?
A.
Phil Zimmermann
B.
Tim Berners-Lee
C.
Marc Andreessen
D.
Ken Thompson
Answer: _________
Question 98:
What do we call a network whose elements may be separated by some distance? It usually involves two or more small networks and dedicated high-speed telephone lines.
A.
URL (Universal Resource Locator)
B.
LAN (Local Area Network)
C.
WAN (Wide Area Network)
D.
World Wide Web
Answer: _________
Question 99:
After the first photons of light are produced, which process is responsible for amplification of the light?
A.
Blackbody radiation
B.
Stimulated emission
C.
Planck's radiation
D.
Einstein oscillation
Answer: _________
Question 100:
Which is NOT an acceptable method of distributing small power outlets throughout an open plan office area?
A.
Power Poles
B.
Power Skirting
C.
Flush Floor Ducting
D.
Extension Cords
Answer: _________
Question 101:
Which of these is a documented hoax virus?
A.
McDonalds screensaver
B.
Alien.worm
C.
Merry Xmas
D.
Adolph
Answer: _________
Question 102:
What does SSL stand for?
A.
Secure Socket Layer
B.
System Socket Layer
C.
Superuser System Login
D.
Secure System Login
Answer: _________
Question 103:
What is a URL?
A.
A computer software program
B.
A type of UFO
C.
The address of a document or
D.
An acronym for Uniform Resources Learning
Answer: _________
Question 104:
The Central Processing Unit is an embeded chip that acts as the 'brains' of a computer. What Intel chip was used in the Altair (the first real personal computer)?
A.
6502
B.
8080
C.
6400
D.
8286
Answer: _________
Question 105:
What is a NIC?
A.
Netware Intranet Controller
B.
No Internet Connection
C.
Network Interface Card
D.
Network Interference Control
Answer: _________
Question 106:
The Internet was developed in the...
A.
Early 1990s
B.
Late 1980s
C.
Early 1970s
D.
Late 1960s
Answer: _________
Question 107:
Which of the following is operating system for mobiles?
A.
Windows XP
B.
Mac OS
C.
Android
D.
Linux
Answer: _________
Question 108:
Which of the following not a hardware?
a)
b)
c)
d)
A.
Magnetic tape
B.
Printer
C.
Assembler
D.
CRT
Answer: _________
Question 109:
The term DNS stands for-
A.
Domain Name system
B.
Defence nuclear system
C.
Downloadable new Software
D.
Dependent Name Server
Answer: _________
Question 110:
Select the smallest memory size:
A.
Terabyte
B.
Kilobyte
C.
Megabyte
D.
Gigabyte
Answer: _________
Question 111:
What is a BJT?
A.
Bit Junction Transfer
B.
Bi-polar Junction Transistor
C.
Bell Jar Transformer
D.
Back Junction Transformer
Answer: _________
Question 112:
Which is not an internet protocol?
A.
HTTP
B.
FTP
C.
STP
D.
IP
Answer: _________
Question 113:
Which of the following is not a valid domain name?
A.
Www.yahoo.com
B.
Www.yahoo.co.uk
C.
Www.fr.yahoo
D.
Www.yahoo.fr
Answer: _________
Question 114:
AOL stands for:
A.
Arranged Outer Line
B.
America Over LAN
C.
Audio Over LAN
D.
America Online
Answer: _________
Question 115:
What are the three main search expressions, or operators, recognized by Boolean logic?
A.
FROM, TO, WHOM
B.
AND, OR, NOT
C.
SEARCH, KEYWORD, TEXT
D.
AND, OR, BUT
Answer: _________
Question 116:
Another name for a computer chip is ...
A.
Execute
B.
Micro chip
C.
Microprocessor
D.
Select
Answer: _________
Question 117:
"www" stands for:
A.
World Wide Web
B.
World Wide Wares
C.
World Wide Wait
D.
World Wide War
Answer: _________
Question 118:
Which of these is not a computer?
A.
Aptiva
B.
Macintosh
C.
Acorn
D.
Paseo
Answer: _________
Question 119:
Which of the following is not a programming language?
A.
Basic
B.
Java
C.
Turing
D.
C#
Answer: _________
Question 120:
Which of the following is not a method of accessing the web?
A.
ISDN
B.
Modem
C.
CPU
D.
DSL
Answer: _________
Question 121:
A dual-layer DVD is valued because it:
A.
Can hold more data
B.
Contains a backup of the data stored
C.
Uses a second layer to offer a speed increase
D.
Creates alternative sound tracks
Answer: _________
Question 122:
To select text by shading as you drag the mouse arrow over the text is known as...
A.
Clip art
B.
To highlight
C.
To fetch
D.
To decode
Answer: _________
Question 123:
Another word for 'Graphics for a word processor'?
A.
Peripheral
B.
Clip art
C.
Highlight
D.
Execute
Answer: _________
Question 124:
What Designates where the next action occurs?
A.
Decode
B.
Highlight
C.
Select
D.
Mother board
Answer: _________
Question 125:
Which was an early mainframe computer?
A.
ENIAC
B.
UNIC
C.
BRAINIA
D.
FUNTRIA
Answer: _________
Question 126:
Experts say the healthiest way to view a computer monitor is by
A.
Placing it 18 to 30 inches away from your eyes
B.
Viewing from a darkened room
C.
Adjusting the screen for maximum contrast
D.
Using special glasses that filter out UV rays
Answer: _________
Question 127:
Name the terminals of a BJT.
A.
Drain, Gate, Source
B.
Positive, Negative, Neutral
C.
Anode, Cathode, Triode
D.
Emitter, Base, Collector
Answer: _________
Question 128:
What do you call a computer on a network that requests files from another computer?
A.
A client
B.
A host
C.
A router
D.
A web server
Answer: _________
Question 129:
In which decade were the first successful diode and triode vacuum tubes invented?
A.
1800s
B.
1880s
C.
1890s
D.
1900s
Answer: _________
Question 130:
RAM stands for
A.
Random Access Memory
B.
Really Annoying Machine
C.
Read A Manual
D.
Real Absolute Memory
Answer: _________
Question 131:
In which decade was the American Institute of Electrical Engineers (AIEE) founded?
A.
1850s
B.
1880s
C.
1930s
D.
1950s
Answer: _________
Question 132:
What is part of a database that holds only one type of information?
A.
Report
B.
Field
C.
Record
D.
File
Answer: _________
Question 133:
'OS' computer abbreviation usually means ?
A.
Order of Significance
B.
Open Software
C.
Operating System
D.
Optical Sensor
Answer: _________
Question 134:
In which decade with the first transatlantic radio broadcast occur?
A.
1850s
B.
1860s
C.
1870s
D.
1900s
Answer: _________
Question 135:
'.MOV' extension refers usually to what kind of file?
A.
Image file
B.
Animation/movie file
C.
Audio file
D.
MS Office document
Answer: _________
Question 136:
In which decade was the SPICE simulator introduced?
A.
1950s
B.
1960s
C.
1972s
D.
1980s
Answer: _________
Question 137:
Most modern TV's draw power even if turned off. The circuit the power is used in does what function?
A.
Sound
B.
Remote control
C.
Color balance
D.
High voltage
Answer: _________
Question 138:
Which is a type of Electrically-Erasable Programmable Read-Only Memory?
A.
Flash
B.
Flange
C.
Fury
D.
FRAM
Answer: _________
Question 139:
The purpose of choke in tube light is ?
A.
To decrease the current
B.
To increase the current
C.
To decrease the voltage momentarily
D.
To increase the voltage momentarily
Answer: _________
Question 140:
'.MPG' extension refers usually to what kind of file?
A.
WordPerfect Document file
B.
MS Office document
C.
Animation/movie file
D.
Image file
Answer: _________
Question 141:
What is a MAC?
A.
A Computer made by Apple
B.
Memory Address Corruption
C.
Mediocre Apple Computer
D.
Media Access Control
Answer: _________
Question 142:
This virus activated every Friday the 13th, affects both .EXE and .COM files and deletes any programs run on that day. What is the name of that virus?
A.
Chernobyl
B.
Jerusalem
C.
Melissa
D.
I Love You
Answer: _________
Question 143:
A program that neither replicates or copies itself, but does damage or compromises the security of the computer. Which 'Computer Virus' it is?
A.
Joke Program
B.
Worm
C.
Trojan
D.
Hoax
Answer: _________
Question 144:
What is the Websites code for the country New Zealand?
A.
NZ
B.
NW
C.
NE
D.
ZL
Answer: _________
Question 145:
Which Intel chip was the first to support a 32-bit bus architecture?
A.
486SI
B.
Pentium
C.
286
D.
386DX
Answer: _________
Question 146:
What does ECP stand for?
A.
Extended Capabilities Port
B.
Extra Compatible Part
C.
Extended Connection Port
D.
External Cordless Peripheral
Answer: _________
Question 147:
The first graphical browser for the WWW was named:
A.
Netscape
B.
Veronica
C.
Mosaic
D.
Explorer
Answer: _________
Question 148:
What is RISC?
A.
Remodeled Interface System Computer
B.
Remote Intranet Secured Connection
C.
Runtime Instruction Set Compiler
D.
Reduced Instruction Set Computer
Answer: _________
Question 149:
What does ICMP stand for?
A.
Internet Connection Modem Protocol
B.
Intranet Control Message Program
C.
Internal Conflict Management Program
D.
Internet Control Message Protocol
Answer: _________
Question 150:
What is FMD?
A.
FastEthernet Measuring Device
B.
Flashing Media Diode
C.
Fluorescent Multi-Layer Disc
D.
Flash Media Driver
Answer: _________
Question 151:
Voltage is sometimes referred to as EMF, or Electromotive...?
A.
Field
B.
Factor
C.
Flash
D.
Force
Answer: _________
Question 152:
'.BAT' extension refers usually to what kind of file?
A.
Compressed Archive file
B.
System file
C.
Audio file
D.
Backup file
Answer: _________
Question 153:
What is the term to ask the computer to put information in order numerically or alphabetically?
A.
Crop
B.
Report
C.
Record
D.
Sort
Answer: _________
Question 154:
The input used by an antenna or cable to a TV set uses frequencies called:
A.
IF
B.
RF
C.
AF
D.
SAP
Answer: _________
Question 155:
Larger buildings may be supplied with a medium voltage electricity supply, and will required a substation or mini-sub. What is the main item of equipment contained in these?
A.
Transformer
B.
Transponder
C.
Transducer
D.
Converter
Answer: _________
Question 156:
What was the active medium used in the first working laser ever constructed?
A.
A diamond block
B.
Helium-neon gas
C.
A ruby rod
D.
Carbon dioxide gas
Answer: _________
Question 157:
What does EPROM stand for?
A.
Electric Programmable Read Only Memory
B.
Erasable Programmable Read Only Memory
C.
Evaluable Philotic Random Optic Memory
D.
Every Person Requires One Mind
Answer: _________
Question 158:
Blue is what number on the resistor color code?
A.
1
B.
4
C.
2
D.
6
Answer: _________
Question 159:
Changing computer language of 1's and 0's to characters that a person can understand is:
A.
Highlight
B.
Clip art
C.
Decode
D.
Execute
Answer: _________
Question 160:
Main circuit board in a computer is...
A.
Decoder
B.
Highlight
C.
Select
D.
Mother board
Answer: _________
Question 161:
Name the terminals of an FET.
A.
Drain, Gate, Source
B.
Positive, Negative, Neutral
C.
Anode, Cathode, Triode
D.
Emitter, Base, Collector
Answer: _________
Question 162:
Where are the contents of your computer's hard drive indexed?
A.
Yahoo!
B.
Google
C.
MSN
D.
None of the above
Answer: _________
Question 163:
ISP stands for:
A.
Internet Survey Period
B.
Integrated Service Provider
C.
Internet Security Protocol
D.
Internet Service Provider
Answer: _________
Question 164:
Internet Explorer is a:
A.
Any person browsing the net
B.
Web Browser
C.
Graphing Package
D.
News Reader
Answer: _________
Question 165:
Lately you hear a clatter from your computer, especially when you load a program or call up information. What's going on?
A.
It's infested with reindeer
B.
Your hard disk may be headed for failure
C.
A loose wire is hitting the cooling fan
D.
A loud metallic clatter is normal
Answer: _________
Question 166:
The "http" you type at the beginning of any site's address stands for:
A.
HTML Transfer Technology Process
B.
Hyperspace Terms and Tech Protocol
C.
Hyperspace Techniques & Tech Progress
D.
Hyper Text Transfer Protocol
Answer: _________
Question 167:
Which company created the most used networking software in the 1980's
A.
Microsoft
B.
Sun
C.
IBM
D.
Novell
Answer: _________
Question 168:
Which of the following operating systems is produced by IBM?
A.
OS-2
B.
Windows
C.
DOS
D.
UNIX
Answer: _________
Question 169:
Which of the following is NOT a type of expansion slot or bus design used in Advanced-Technology class systems?
A.
PCMCIA
B.
ISA
C.
PROM
D.
EISA
Answer: _________
Question 170:
What is a GPU?
A.
Grouped Processing Unit
B.
Graphics Processing Unit
C.
Graphical Performance Utility
D.
Graphical Portable Unit
Answer: _________
Question 171:
What does DOCSIS stand for?
A.
Data Over Cable Service Interface Specification
B.
Data Over Cable Security Internet Std
C.
Data Over Cable Secure International Stds
D.
Data Over Cable Service Internet Standard
Answer: _________
Question 172:
Which one of the following is a search engine?
A.
Macromedia Flash
B.
Bing
C.
Netscape
D.
Librarians' Index to the Internet
Answer: _________
Question 173:
Which is the best search tool for finding Web sites that have been handpicked and recommended by someone else?
A.
Subject directories
B.
Search engines
C.
Meta-search engines
D.
Discussion groups
Answer: _________
Question 174:
What is LCP?
A.
Local Connection Protocol
B.
Lost Connection Problem
C.
Link Control Protocol
D.
Laggy Connection Problem
Answer: _________
Question 175:
What is VCM?
A.
Virtual Connection Manager
B.
Virtual Channel Memory
C.
Voice Controlled Modem
D.
Voice Communications Module
Answer: _________
Question 176:
ARPANET, the precursor to the Internet, was developed by:
A.
FAA
B.
Department of Defence
C.
NATO
D.
UART
Answer: _________
Question 177:
What is a spider?
A.
A computer virus
B.
A program that catalogs Web sites
C.
A hacker who breaks into computer systems
D.
An application for viewing Web sites
Answer: _________
Question 178:
Which of the following is not a part of the Internet?
A.
World Wide Web
B.
Email
C.
CD-ROM
D.
HTTP
Answer: _________
Question 179:
The abbreviation URL stands for:
A.
User Regulation Law
B.
Unknown RAM Load
C.
Uniform Resource Locator
D.
Ultimate RAM Locator
Answer: _________
Question 180:
Which is the most commonly used input device?
A.
Key board
B.
Mouse
C.
Joystick
D.
Scanner
Answer: _________
Question 181:
The principal electronic payment system for electronic Commerce is-
A.
credit
B.
Digital wallet
C.
Electronic Cheque
D.
All of above
Answer: _________
Question 182:
Compact discs, (according to the original CD specifications) hold how many minutes of music?
A.
74 mins
B.
56 mins
C.
60 mins
D.
90 mins
Answer: _________
Question 183:
Once the active medium is excited, the first photons of light are produced by which physical process?
A.
Blackbody radiation
B.
Spontaneous emission
C.
Synchrotron radiation
D.
Planck's oscillation
Answer: _________
Question 184:
'DTP' computer abbreviation usually means ?
A.
Digital Transmission Protocol
B.
DeskTop Publishing
C.
Data Type Programming
D.
Document Type Processing
Answer: _________
Question 185:
The average power (in watts) used by a 20 to 25 inch home color television is...?
A.
70-100
B.
25-50
C.
500-800
D.
Over 1000
Answer: _________
Question 186:
What does AC and DC stand for in the electrical field?
A.
Alternating Current and Direct Current
B.
A Rock Band from Australia
C.
Average Current and Discharged Capacitor
D.
Atlantic City and District of Columbia
Answer: _________
Question 187:
In which decade was the ARRL founded?
A.
1940s
B.
1930s
C.
1920s
D.
1910s
Answer: _________
Question 188:
'CD' computer abbreviation usually means ?
A.
Command Description
B.
Change Data
C.
Copy Density
D.
Compact Disc
Answer: _________
Question 189:
'.BAK' extension refers usually to what kind of file?
A.
Backup file
B.
Audio file
C.
Animation/movie file
D.
MS Encarta document
Answer: _________
Question 190:
Where is the headquarters of Intel located?
A.
Redmond, Washington
B.
Tucson, Arizona
C.
Santa Clara, California
D.
Richmond, Virginia
Answer: _________
Question 191:
Who co-created the UNIX operating system in 1969 with Dennis Ritchie?
A.
Bjarne Stroustrup
B.
Steve Wozniak
C.
Ken Thompson
D.
Niklaus Wirth
Answer: _________
Answer Key
1:
A
2:
A
Solution: The original IBM PC ran at a breathtaking 4.77 MHz (Smmmmmmokin!) Today there are new PC processors that run faster than 3 gigahertz.
3:
A
Solution: NAT is commonly used by nearly all consumer routers today, both hardware and software.
4:
D
Solution: You need a browser, online access and a computer to surf the Web, but if you're on a local area network (LAN) that's connected to the Internet, you don't need a modem to go online.
5:
A
Solution: Before IBM created its personal computer, two types of computer systems, Apple II and CP-M, dominated the microcomputer world. Neither of these systems were PC compatible, or Mac-compatible (the two primary standards in place today). The original IBM PC became a new standard in the microcomputer industry. Since then, hundreds of millions of PC-compatible systems have been sold, as the original PC grew into a large family of computers and peripherals. More software has been written for this computer family than for any other system on the market.
6:
B
7:
C
8:
A
9:
A
Solution: 1990 Symantec launches Norton AntiVirus, one of the first anti-virus programs developed by a large company.
10:
C
Solution: The original IBM PC used 5.25-inch floppy disks to store its operating system and programs. IBM referred to the new hard disk as a Fixed Disk. Today, even a the operating system wont fit on a 10 MB disk.
11:
A
12:
D
Solution: Before the invention of word processing and spreadsheet software, personal computers had little value in the mainstream business world. WordStar was used before the days of function keys and the mouse. It, instead, used a set of Ctrl and Alt key combinations to navigate and edit text documents.
13:
D
Solution: The transistor, which essentially is a solid-state electronic switch, replaced the much less suitable vacuum tube. Because the transistor consumed significantly less power, a computer system built with transistors was much smaller, faster and more efficient than a computer system built with vacuum tubes.
14:
C
Solution: Time To Live specifies how many more hops a packet can travel before being dropped.
15:
D
16:
C
Solution: It is a protocol used to create VPN connections over the net.
17:
D
18:
C
Solution: 1983 Fred Cohen, while working on his dissertation, formally defines a computer virus as 'a computer program that can affect other computer programs by modifying them in such a way as to include a (possibly evolved)copy of itself.'
19:
C
Solution: The World Wide Web is a subset of the Internet. Specifically, the Web is a collection of documents and applications residing on Internet servers around the world.
20:
B
21:
D
22:
A
Solution: A URL (Uniform {or Universal} Resource Locator) is an address for a specific document found on the Web. It is made up of several components: a domain name, the directories and sub-directories of the site, and the extension. To learn about these parts of a URL, visit the Evaluating Web Sites tutorial.
23:
B
24:
B
25:
C
26:
C
27:
C
28:
C
Solution: Device used to convert AC to DC voltage.
29:
A
30:
B
31:
D
Solution: An uninterruptable power supply (UPS) is a backup power supply, such as a battery, that provides emergency power in the event that power is lost from the main supply.
32:
C
33:
C
34:
B
Solution: Twisting the yoke will tilt the picture. A projection color television uses three picture tubes and yokes for red, green and blue light.
35:
B
Solution: PAL and SECAM are standards used in other countries. RGB stands for red, green, and blue - the colors of light used to create an image in a color tv set and is often used as a format name for computer monitors.
36:
C
Solution: This voltage often remains in storage even if the set is unplugged. Although the voltage is very high it has very low power but it can be dangerous because your body jumps if brought in contact.
37:
B
Solution: The flyback is usually connected to the system that pulls the electron beam across the screen in one direction to 'paint' a line of the image and then returns in the other direction much faster.
38:
B
Solution: The flyback is usually connected to the system that pulls the electron beam across the screen in one direction to 'paint' a line of the image and then returns in the other direction much faster.
39:
B
Solution: Useful in tuning and filtering circuits, it blocks DC while passing AC. How much charge a capacitor can store is its capacitance, measured in farads.
40:
C
41:
A
42:
B
43:
C
Solution: So named because it resists (or inhibits) the flow of current.
44:
A
Solution: JVC (Japan Victor Corporation) and Matsushita (Panasonic) developed the VHS format to compete with Sony which developed the Beta format as the first home video cassette recorder. VHS originally stood for Vertical Helical Scan, but now means Video Home System.
45:
D
Solution: It is a method of controlling the speed of an AC induction motor, whereby speed, current and torque can all be accurately controlled.
46:
D
Solution: The HF band is based on frequencies 3 to 30 Mhz. AM radio stations are in the HF band but normally are stated in kilohertz.
47:
A
Solution: A collection of atoms or molecules that can be excited to a higher energy state is called an active medium. Before lasing can occur, the active media is "pumped". The process of raising the atoms in the active media from a lower energy state to a higher state is like pumping water up from a well.
48:
D
49:
C
Solution: The squirrel cage motor is the only one without any connection to the armature.
50:
C
Solution: A given signal's second harmonic is twice the given signal's fundamental frequency. Harmonics are generated when there are non-linearities in an amplifier (there are always non-linearities). The worse the non-linearities, the more harmonics. A signal at 27.5 MHz (approximate frequency for US citizen's band) would have a second harmonic at 55.0 MHz (on US channel 2!). Can you see why there might be problems? A CB operator might do well to place a low-pass filter on his radio.
51:
A
52:
D
53:
D
54:
C
55:
C
56:
A
Solution: On September 12, 1958, Jack Kilby demonstrated the first working IC while working for Texas Instruments, although the U.S. patent office awarded the first patent for an integrated circuit to Robert Noyce of Fairchild.
57:
D
58:
A
59:
D
60:
A
61:
D
62:
C, G
Solution: Amplitude modulation was the first type to be used in radio. It works well with HF and morse code.
63:
B
64:
A
65:
A
66:
A
67:
A
Solution: The terminals of FETs are called gate, drain and source. You might be more familiar with bipolar junction transistors (BJTs), which have terminals called base, collector and emitter. FETs were conceptualized first, but BJTs were easier to produce and so developed sooner.
68:
D
Solution: The first laser was a solid state laser. Solid state refers to any solid material like a glass rod. Diode lasers are very common because they are used to read compact disks and digital video disks in computers, CD players, and DVD players. Before diode lasers, the most common type of laser may have been the helium-neon laser, in which the active medium is a combination of the two gasses helium and neon.
69:
A
Solution: UPS stands for Uninterruptible Power Supply. Examples of equipment that may require a UPS supply are computers, fire detection systems, hospital operating theatre equipment and escape route lighting.
70:
A
71:
C
72:
D
73:
C
74:
C
75:
A
76:
A
77:
B
78:
C
79:
A
Solution: On December 23, 1947, William Shockley, Walter Brattain and John Bardeen, of Bell Labs, announced their discovery of the point-contact germanium transistor to management.
80:
B
81:
C
82:
B
83:
B
84:
B
Solution: On May 24, 1844, Samuel Morse send his famous message, "What hath God wrought?"
85:
B
86:
A
87:
D
88:
B
89:
C
Solution: The first message ever sent over what is now called the Internet took place at 10:30PM on October 29, 1969. Back then, the Department of Defense called it ARPAnet (Advanced Research Projects Agency network).
90:
C
Solution: Alexander Graham Bell's notebook entry of 10 March 1876 describes his successful experiment with the telephone. Speaking through the instrument to his assistant, Thomas A. Watson, in the next room, Bell utters these famous first words, "Mr. Watson -- come here -- I want to see you".
91:
B
92:
C
Solution: Used in manufacturing, engineering, and process operations.
93:
D
Solution: "Noise figure" is one critical parameter for determining the "quality" of a low-noise, small-signal, amplifier, and perhaps more importantly, the sensitivity of the overall receiver system. It is especially important for VHF (very high frequency) - and higher frequency - designs where most of the undesired "noise" (noise that masks or overpowers the desired signals) is generated internal to the electronics itself. In HF (high frequency) applications, atmospheric noise plays a much larger role in determining overall useful sensitivity, so a circuit's "noise figure" is less important.
94:
A
95:
B
96:
C
Solution: CDs reproduce 44,100 samples per second. Which has a maximum frequency reproduction of 22,050 Hz, or just a hair past the upper limit of human hearing. In this way CDs can theoretically reproduce any frequency in the human hearing range.
97:
A
Solution: Phil Zimmermann created the first version of PGP encryption in 1991. Pretty Good Privacy (PGP) is a data encryption and decryption computer program that provides cryptographic privacy and authentication for data communication. PGP is often used for signing, encrypting and decrypting texts, E-mails, files, directories and whole disk partitions to increase the security of e-mail communications.
98:
C
99:
B
Solution: The word "laser" is actually an acronym for light amplification by stimulated emission of radiation. Atoms or molecules of the active medium that have been excited to a higher energy level are stimulated by a passing photon to relax to a lower energy level and emit a photon that is indistinguishable from the passing photon, thereby increasing the number of photons like the incident one.
100:
D
Solution: Extension cords can be a tripping hazard, and can be easily damaged, causing an unsafe situation. There are many ways of safely getting power to each work place, where wiring is protected and concealed.
101:
A
Solution: A virus hoax is usually an email that gets mailed in chain letter fashion describing some devastating highly unlikely type of virus, you can usually spot a hoax because there's no file attachment, no reference to a third party who can validate the claim and the general 'tone' of the message.
102:
A
Solution: A protocol developed by Netscape to allow secure connections over the net.
103:
C
Solution: URL stands for Uniform Resource Locator. It is an address for a specific document found on the Web.
104:
B
Solution: The Intel 8080 was a jazzed-up calculator chip. It was included in microcomputer kits which were little more than demonstration tools and did little except blink lights. Besides the 8080 chip, the Altair included a power supply, a front panel with a large number of lights and 256 bytes (not kilobytes) of memory. The kit sold for {$395} and had to be assembled.
105:
C
Solution: A NIC is a Network Interface Card. Usually a card that is plugged into a computer's expansion slot.
106:
D
Solution: As surprising as its age is, the Internet was born from the U.S. military's need to construct a decentralized computer network that could withstand a nuclear war. The network was used and refined by universities throughout the 1970s and 1980s, but it wasn't until 1992 that the Internet was made available to the general public.
107:
C
108:
C
109:
A
110:
B
111:
B
112:
C
113:
C
114:
D
115:
B
Solution: The three most commonly used Boolean operators are: AND, OR, and NOT. On the Web, Boolean operators are used in advanced searches to combine search items. For example, an "AND" operator between two words ("football AND television") tells the search engine to find documents that contain both of these words.
116:
B
117:
A
118:
D
119:
C
120:
C
121:
A
122:
B
123:
B
124:
C
125:
A
126:
A
127:
D
128:
A
129:
D
Solution: In 1904, John Ambrose Fleming invented the first practical electron tube called the 'Fleming Valve', which is a diode rectifier. In 1906, Lee de Forest invented the audion later called the triode, which provided signal amplification.
130:
A
131:
B
Solution: The IEEE (Institute of Electrical and Electronics Engineers) was formed in 1963 by the merger of the Institute of Radio Engineers (IRE, founded 1912) and the American Institute of Electrical Engineers (AIEE, founded 1884).
132:
B
Solution: A field in a database is a specific area within a record that contains only one type of information. For example, in a database of employee records, a field might hold the employee's name, while another field might hold their ID number. Each field is part of a larger structure called a record, which typically contains all the fields related to a single entity (e.g., all the details about one employee). In summary, a field is the smallest unit of data in a database, holding just one piece of information.
133:
C
134:
D
Solution: On December 12, 1901, a radio transmission received by Guglielmo Marconi resulted in the first transmission of a transatlantic wireless signal (Morse Code) from Poldhu, Cornwall, to St. John's, Newfoundland.
135:
B
136:
C
Solution: SPICE (Simulation Program with Integrated Circuit Emphasis) was introduced in May 1972 by the University of Berkeley, California.
137:
B
Solution: Some authorities are recommending TV's, VCR's and Stereo's be connected to power strips with switches and turned off when not in use to save energy. Your remote will not work until power is switched back on.
138:
A
Solution: It's commonly used for MP3 players, computer BIOS code and "thumb" drives. Originally developed in Japan by Toshiba, it has become quite popular for products requiring non-volatile erasable memory. Flash devices have a limited number of erase cycles (typically 10,000 to 1,000,000 cycles) so they're not as good a choice for applications in which the data changes constantly. However, since it has no moving parts (unlike a hard disk) it is an excellent choice for storing the operating code for small personal electronics like PDAs, cell phones, digital cameras, and the data in items like MP3 players.
139:
D
140:
C
141:
D
Solution: MAC is short for Media Access Control address, an address unique to every piece of network hardware.
142:
B
Solution: This was one of the most common viruses unleashed in 1988.
143:
C
Solution: Typically it relies on someone emailing it to you, it does not email itself, it may arrive in the form of a joke program or software of some sort.
144:
A
145:
D
Solution: The 386 chip was the first to offer a possible 32- or 64-bit access to data. OS-2 2.x or higher and Windows 95 required at least a 386 CPU while Windows NT 4.x required at least a 486 CPU to run.
146:
A
Solution: An Extended Capabilities Port is about 10 times faster than the old standard one, but it is used the same way a regular parallel port is.
147:
C
148:
D
Solution: Reduced Instruction Set Computer - a type of microprocessor that relies on simple instructions which can be used to build more complicated ones.
149:
D
Solution: ICMP Packets are used to send control messages including errors.
150:
C
Solution: A new type of disc developed by Constellation 3D Inc. These discs can hold up to to 140 GB of data.
151:
D
Solution: The term EMF, or Electromotive Force, its use now in decline, is attributed to Italian physicist Alessandro Volta (1745-1827). Today we generally use the term "voltage" - can you guess why we call it that?
152:
B
153:
D
154:
B
Solution: RF is radio frequency. IF is intermediate frequency used inside the TV for processing. AF is audio frequency. SAP is second audio program which may have another language or other soundtrack as an option to the main soundtrack.
155:
A
Solution: The transformer is used to transform a medium voltage supply to a low voltage supply, e.g. from 11 000 V to 400 V. A transformer is rated in KVA, kilo-Volt-Amps, which is a measurement of electrical power.
156:
C
Solution: Theodore Maiman built the first working laser using a ruby rod while working at Hughes Research Laboratories in Malibu, California. It lased for the first time on May 16, 1960.
157:
B
Solution: A chip found in almost every microprocessor.
158:
D
159:
C
160:
D
161:
A
162:
D
163:
D
164:
B
165:
B
166:
D
167:
D
Solution: Novell (based in Provo, UT) created NetWare which is still one of the most used PC networking systems in the world.
168:
A
Solution: IBM also created it's own version of DOS called PC-DOS.
169:
C
Solution: PROM stands for Programmable Read Only Memory and is not a type of expansion slot or bus design. Today, PCI has become the most used expansion slot design in PCs. Older PCs incorporated both PCI and ISA slots for computability with older expansion devices.
170:
B
Solution: It is a chip dedicated to performing 3D calculations.
171:
A
Solution: DOCSIS was developed by CableLabs. A standard set for Cable equipment to ensure compatibility across all DOCSIS networks.
172:
B
Solution: A search engine is a program that searches for Web documents with keyword (s) you specify. Yahoo!, Google, Bing and AltaVista are just some examples of search engines that have been created to help you find information on the Web.
173:
A
Solution: Subject directories tend to house fewer—sometimes more relevant—sites than those found through search engines. Sites in a subject directory often have been handpicked by editorial teams or specialists in a particular field.
174:
C
Solution: LCP is a part of PPP(Point-Point Protocol).
175:
B
Solution: VCM was designed by NEC Corp. It is supposed to be faster than normal SDRAM, and it is, but it never caught on.
176:
B
177:
B
Solution: Spiders are also referred to as "bots" or "crawlers," and constantly scan the Internet for new and updated Web sites.
178:
C
179:
C
180:
A
181:
D
182:
A
Solution: According to many stories surrounding the origin of the compact disc, 74 minutes was settled on because it would comfortably contain all of Beethoven's 9th symphony on one disc. Although some stories reference a specific Sony higher-up who claimed this as his favorite piece of music, stories differ. All that's known for sure is that Sony insisted on this and won out over Phillips' original 60 minute proposal.
183:
B
Solution: Spontaneous emission is what you see with most "glow in the dark" toys. You excite the toy by exposing it to bright light, then the toy glows in the dark by spontaneously emitting photons as the excited atoms relax back down to their normal state.
184:
B
185:
A
Solution: About the same as as the most popular light bulb size.
186:
A
Solution: Electricity is voltage and current. Voltage is electrical pressure, and current is the flow of charged particles. The difference between alternating current (AC) and direct current (DC) is that the electrons in an AC circuit regularly reverse their direction. In a DC circuit electrons always flow in the same direction.
187:
D
Solution: On April 6, 1914, Hiram Percy Maxim proposed the formation of the American Radio Relay League.
188:
D
189:
A
190:
C
191:
C