Computer Fundamental Miscellaneous - Study Mode
[#471] The ALU of a computer normally contains a number of high speed storage elements called
Correct Answer
(B) registers
Explanation
Solution: ALU : An arithmetic logic unit (ALU) is a combinational digital electronic circuit that performs arithmetic and bitwise operations on integer binary numbers. This is in contrast to a floating-point unit (FPU), which operates on floating point numbers. An ALU is a fundamental building block of many types of computing circuits, including the central processing unit (CPU) of computers, FPUs, and graphics processing units (GPUs). A single CPU, FPU or GPU may contain multiple ALUs.
[#472] What is the name of the printer which prints all the A's in a line before all the B's?
Correct Answer
(C) Line printer
Explanation
Solution: Line printer : A line printer prints one entire line of text before advancing to another line. Most early line printers were impact printers. Line printers are mostly associated with unit record equipment and the early days of digital computing, but the technology is still in use.
[#473] A _____ is simply an arrangement where multiple disk drives appear as a single disk drive to the user.
Correct Answer
(B) disk array
Explanation
Solution: disk array : A disk array is a hardware element that contains a large group of hard disk drives (HDDs). It may contain several disk drive trays and has an architecture which improves speed and increases data protection. The system is run via a storage controller, which coordinates activity within the unit. Disk arrays form the backbone of modern storage networking environments. A storage area network (SAN) contains one or more disk arrays that function as the repository for the data which is moved in and out of the SAN. Source : wikipedia.org
[#474] Conversion of binary number 1010101000010111 to hexadecimal number is
Correct Answer
(C) AA17 16
Explanation
Solution: Conversion of binary number 1010101000010111 to hexadecimal number is (AA17) 16 Now we convert these pairs hexadecimal like 1010 = 1 × 2 3 + 0 × 2 2 + 1 × 2 1 + 0 × 2 0 = 8 + 0 + 2 + 0 = 10 = A 1010 = 1 × 2 3 + 0 × 2 2 + 1 × 2 1 + 0 × 2 0 = 8 + 0 + 2 + 0 = 10 = A 0001 = 0 × 2 3 + 0 × 2 2 + 0 × 2 1 + 1 × 2 0 = 0 + 0 + 0 + 1 = 1 0111 = 0 × 2 3 + 1 × 2 2 + 1 × 2 1 + 1 × 2 0 = 0 + 4 + 2 + 1 = 7 So (1010101000010111) 2 = (AA17) 16 1010101000010111 binary = (AA17) 16 hexadecimal
[#475] In comparison with static RAM memory, the dynamic RAM memory has
Correct Answer
(D) higher bit density and lower power consumption
Explanation
Solution: In comparison with static RAM (SRAM) memory, the dynamic RAM (DRAM) memory has: Higher bit density: DRAM can store more data in the same physical space compared to SRAM because it uses a single transistor and a capacitor per bit, whereas SRAM uses multiple transistors per bit. Lower power consumption: DRAM generally consumes less power than SRAM when storing data because it requires less hardware per bit. However, DRAM needs to be periodically refreshed to maintain the data, which does consume power, but overall it is still less than SRAM's constant power requirement. Therefore, the correct answer is Option D: higher bit density and lower power consumption.