Computer MCQs: 1,296 practice questions with answer choices and available explanations. Page 54 of 87.

Computer MCQs

Showing page 54 of 87 · 1,296 total solved questions available.

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A.Monitor website traffic
B.Protect against unauthorized access and threats
C.Increase internet speed
D.Block unwanted email
Explanation: A firewall is a security system designed to prevent unauthorized access into or out of a computer network. Firewalls are often used to make sure internet users without access are not able to interface with private networks, or intranets, connected to the internet.

Submitted by: Academy of Pakistan

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A.RAM
B.PROM
C.BIOS
D.ROM
Explanation: Volatile memory is computer memory that requires power to maintain the stored information. Most modern semiconductor volatile memory is either Static RAM (see SRAM) or dynamic RAM (see DRAM). SRAM retains its contents as long as the power is connected and is easy to interface to but uses six transistors per bit.

Submitted by: Academy of Pakistan

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