RRB PO, SO, Clerk Computer Awareness 2026-2027 Pdf - 1

Question: 1

What is a backdoor?

(A) A tool used to scan a network for vulnerabilities

(B) A type of malware that spreads through email attachments

(C) A tool used to remove malware from a system

(D) A hidden entry point into a system or network

Question: 2

Which one of the following a file?

(A) Magnetic tape

(B) Magnetic drum

(C) Floppy disk

(D) None of these

Question: 3

Primary memory stores

(A) Data alone

(B) Program alone

(C) Results alone

(D) All of these

Question: 4

Technology no longer protected by copyright, available to everyone, is considered to be

(A) In the public domain

(B) Experimental

(C) Open

(D) Proprietary

Question: 5

What operator tests column for absence of data

(A) No t operator

(B) Is null operator

(C) Exists operator

(D) None of these