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Browse complete papersWhich of the following best describes the function of a Virtual Private Network (VPN)?
It provides unrestricted access to all websites
It encrypts Internet traffic to provide secure access
It replaces the need for an Internet Service Provider
It accelerates Internet speed
Correct answer
It provides unrestricted access to all websites
Which of the following applications is best suited to use a queue?
Function call recursion
Depth-first search in graphs
Printer job scheduling
Undo feature in a text editor
Correct answer
Function call recursion
Which of the following is correct about a preemptive operating system?
Processes voluntarily release the CPU
Only one process runs in the entire system
Once a process starts, it cannot be interrupted
The OS can forcibly take the CPU from a running process
Correct answer
Processes voluntarily release the CPU
A 4-way set-associative cache has 256 blocks and a block size of 16 bytes. How many sets are present in the cache ?
64
16
128
32
Correct answer
64
What is the key advantage of using a multi-core processor?
Reduces the need for RAM
Enhances parallel processing capabilities
Increases power consumption
Slows down the system's performance
Correct answer
Reduces the need for RAM
Which early computing device, developed by Charles Babbage, is considered a mechanical precan modem computers?
ENIAC
Analytical Engine
UNIVAC 1
Colossus
Correct answer
ENIAC
Which control structure is depicted by a loop that executes a set of instructions as long as a special condition remains true!?
Selection
Recursion
Sequence
Iteration
Correct answer
Selection
What type of documents are typically exchanged using EDI?
Business reports and presentations
Social media posts
Purchase orders invoices and shipping notices
Emails and chat messages
Correct answer
Business reports and presentations
Which of the following operations is not possible in a circular queue when it is full?
Traverse
Dequeue
Display
Enqueue
Correct answer
Traverse
Which SQL clause is used to restrict the rows returned by a query in Oracle?
GROUP BY
WHERE
HAVING
ORDER BY
Correct answer
GROUP BY