Computer fundamental MCQ Questions and answers- Technical Aptitude

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

Conversion of binary number 1010101000010111 to hexadecimal number is (AA17)₁₆
Now we convert these pairs hexadecimal like
1010 = 1 × 2³ + 0 × 2² + 1 × 2¹ + 0 × 2⁰
         = 8 + 0 + 2 + 0
         = 10
         = A
1010 = 1 × 2³ + 0 × 2² + 1 × 2¹ + 0 × 2⁰
         = 8 + 0 + 2 + 0
         = 10
         = A
0001 = 0 × 2³ + 0 × 2² + 0 × 2¹ + 1 × 2⁰
         = 0 + 0 + 0 + 1
         = 1
0111 = 0 × 2³ + 1 × 2² + 1 × 2¹ + 1 × 2⁰
         = 0 + 4 + 2 + 1
         = 7
So (1010101000010111)₂ = (AA17)₁₆
1010101000010111 binary = (AA17)₁₆ hexadecimal

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.

Primary storage, also known as main storage or memory, is the area in a computer in which data is stored for quick access by the computer's processor. The terms random access memory (RAM) and memory are often as synonyms for primary or main storage.

Multitasking has the same meaning of multiprogramming but in a more general sense, as it refers to having multiple (programs, processes, tasks, threads) running at the same time. This term is used in modern operating systems when multiple tasks share a common processing resource (e.g., CPU and Memory).

In translation, the source language is the language being translated from; it is the antonym of the target language, which is the language being translated to.

The BIOS in a PC stored on a ROM chip. Early PCs used a ROM BIOS, but PCs today use a flash memory BIOS because it can be updated in place. In order to update a ROM BIOS, the computer case had to be opened, and the ROM chip had to be located and replaced.

Before a disk drive can access any sector record, a computer program has to provide the record's disk address by Track number, Sector number, Surface number and all of the above in record's disk address.

A high speed device used in CPU for temporary storage during processing is called a register.

Computers are extremely fast and have fantastic memories. However, the only thing they can remember is Series of 1s and 0s.