Which of the following is the fastest memory medium in the computer?

Here are the answers to the questions from the GCE paper:

1. Which of the following is the fastest memory medium in the computer? SRAM (Static Random-Access Memory) is generally faster than DRAM (Dynamic Random-Access Memory), ROM (Read-Only Memory), and Hard Disks. SRAM is often used for cache memory due to its speed.

   • The correct option is C.
   $$\boxed{\text{C}}$$

2. Frequently used instructions by the CPU are stored in the: Cache memory is a small, high-speed memory that stores frequently accessed data and instructions to reduce the average time to access data from main memory.

   • The correct option is D.
   $$\boxed{\text{D}}$$

3. The suitable computer to execute many programs for hundreds of users at the same time, performing relatively simple operations and transactions is: Mainframe computers are powerful systems designed for high-volume, concurrent processing and are typically used by large organizations to handle many users and transactions simultaneously.

   • The correct option is A.
   $$\boxed{\text{A}}$$

4. The maximum number of characters that can be represented by a computer that operates a 4 bits system is A system with $n$ bits can represent $2^n$ unique values. For a 4-bit system, the number of characters is $2^4$.

   $$2^4 = 2 \times 2 \times 2 \times 2 = 16$$
   • The correct option is B.
   $$\boxed{\text{B}}$$

5. _______ is a network device that combines multiple signals for transmission on a single channel. A multiplexer is a device that combines several input signals into a single output signal, allowing multiple data streams to be transmitted over a single communication channel.

   • The correct option is A.
   $$\boxed{\text{A}}$$