Computer / IT MCQs

15 MCQs  (Page 1 of 2)

Practice Computer / IT MCQs with correct answers and explanations. Browse subtopics below or start a practice quiz.

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MemoryMS Word
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1 Kilobyte (KB) in the binary system equals:
8 bits
1000 bytes
1024 bits
1024 bytes
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Which memory loses its contents when power is switched off?
Flash drive
Hard disk
RAM
ROM
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High-speed memory placed between the CPU and main memory to hold frequently used data is:
Cache memory
ROM
Virtual memory
Secondary memory
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An IPv4 address is ______ bits long, whereas an IPv6 address is ______ bits long.
16; 32
32; 64
32; 128
64; 128
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The default port number for HTTPS is:
25
80
21
443
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A router operates at which layer of the OSI model?
Network layer (Layer 3)
Transport layer (Layer 4)
Data link layer (Layer 2)
Physical layer (Layer 1)
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The system that translates domain names (e.g., www.fia.gov.pk) into IP addresses is:
FTP
DNS
DHCP
ARP
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Malware that replicates itself and spreads across networks WITHOUT attaching to a host program is a:
Trojan horse
Worm
Spyware
Virus
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A fraudulent email pretending to be from a bank to steal passwords is an example of:
Spamming
Denial of service
Spoofing of DNS
Phishing
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In MS Excel, which cell reference remains fixed when a formula is copied?
A1
A$1
$A$1
$A1
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Word of the Day
11 Oct
Disingenuous
not candid or sincere, typically by pretending that one knows less about something than one really does.
چالبازی، مکاری، زمانہ ساز

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