💻 Computer Awareness कंप्यूटर ज्ञान
156 exam-ready facts · 156 MCQs
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61
Passwords are most commonly used to protect objects and authenticate users in computer systems when more complete protection schemes are absent.
Passwords act as a basic access control barrier.
Asked in SSC CGL 2016 (11 Sep, Shift 1)
Practice (1)
Q61Which of the following is used to protect objects in computer system, in the absence of more complete protection schemes?
Show answer
Correct answer: C — passwords
Answer: (C)
The correct option is (C). -
62
Colossus (1943–45), a British code-breaking computer designed by Tommy Flowers, is regarded as the first programmable electronic digital computer.
Practice (1)
Q62Which British computer was built for code-breaking in World War II?
Show answer
Correct answer: B — Colossus
Colossus was British; ENIAC was American and the Z3 German (Konrad Zuse). -
63
Brain (1986) is regarded as the first computer virus for the IBM PC; it was created by brothers Basit and Amjad Farooq Alvi of Lahore, Pakistan.
Practice (1)
Q63Which is regarded as the first computer virus for the IBM PC?
Show answer
Correct answer: C — Brain
Brain (1986) was a PC virus; Creeper (1971) is regarded as the first worm. -
64
Net neutrality is the principle that Internet Service Providers and governments should treat all data on the internet equally, without discriminating based on user, content, or platform.
It prevents ISPs from blocking or throttling legal content.
Asked in SSC CGL 2016 (28 Aug, Shift 1)
Practice (1)
Q64What is 'net neutrality'?
Show answer
Correct answer: A — Internet Service Providers and governments should treat all data on the internet equally
Answer: (A)
The correct option is (A). -
65
Nandan Nilekani is a co-founder of Infosys and was the first chairman of UIDAI (Aadhaar) in 2009.
Practice (1)
Q65Who was the first chairman of UIDAI (Aadhaar)?
Show answer
Correct answer: A — Nandan Nilekani
Nilekani was UIDAI's first chairman; Narayana Murthy was Infosys's founding chairman. -
66
C++ is a high-level general-purpose programming language developed by Bjarne Stroustrup in 1985.
It is an extension of the C programming language.
Asked in SSC CGL 2017 (8 Aug, Shift 3)
Practice (1)
Q66C++ is ________.
Show answer
Correct answer: B — a programming language
Answer: (B)
C++ is a programming language developed by Bjarne Stroustrup. -
67
Memory interleaving is a technique used in IT to increase memory bandwidth by subdividing the memory memory storage into independent banks.
It allows simultaneous access to multiple memory banks.
Asked in SSC CGL 2016 (11 Sep, Shift 2)
Practice (1)
Q67In IT the technique that is used to increase the bandwidth is
Show answer
Correct answer: B — Memory Interleaving
Answer: (B)
The correct option is (B). -
68
Herman Hollerith built the punched-card tabulating machine used in the 1890 US census; his company later became part of IBM.
Practice (1)
Q68Who built the punched-card machine used in the 1890 US census?
Show answer
Correct answer: A — Herman Hollerith
Hollerith's machine ran the census; Jacquard had used punched cards for looms. -
69
HTTP (Hypertext Transfer Protocol) is an application layer protocol used for transmitting hypermedia documents on the World Wide Web.
TCP, IP, and UDP are transport and network layer protocols.
Asked in SSC CGL 2016 (27 Aug, Shift 1)
Practice (1)
Q69Which of the following is an application protocol?
Show answer
Correct answer: A — HTTP
Answer: (A)
The correct option is (A). -
70
Sundar Pichai became CEO of Google in 2015 and CEO of Alphabet Inc. in 2019.
Practice (1)
Q70Sundar Pichai is CEO of which company?
Show answer
Correct answer: C — Google/Alphabet
Pichai heads Google/Alphabet; Satya Nadella heads Microsoft. -
71
FORTRAN (Formula Translation) is a high-level programming language primarily used for mathematical and scientific computations.
It was developed by IBM in the 1950s.
Asked in SSC CGL 2017 (9 Aug, Shift 1)
Practice (1)
Q71FORTRAN is not used for _____.<br>(I) Drawing pictures<br>(II) Carrying out mathematics computations
Show answer
Correct answer: A — Only (I)
Answer: (A)
FORTRAN (FORmula TRANslation) is designed for mathematical/scientific computation; it is not used for drawing pictures. So only (I) is correct. (The official key says both, which is clearly wrong because FORTRAN is a computation language; corrected.) -
72
In computer science, 'Wetware' refers to the human brain or biological neurons functioning like a computer system.
It combines biological components with computing concepts.
Asked in SSC CGL 2016 (31 Aug, Shift 2)
Practice (1)
Q72Related to computers, what is 'Wetware' ?
Show answer
Correct answer: C — Human brain
Answer: (C)
The correct option is (C). -
73
WEP stands for Wired Equivalent Privacy, which is a security algorithm for IEEE 802.11 wireless networks designed to provide data confidentiality.
WEP has been largely replaced by WPA due to security vulnerabilities.
Asked in SSC CGL 2016 (30 Aug, Shift 1)
Practice (1)
Q73In Networks, WEP stands for
Show answer
Correct answer: C — Wired Equivalent Privacy
Answer: (C)
The correct option is (C). -
74
Routing is the process of selecting a path for traffic in a network or between or across multiple networks.
Routers use routing tables to determine the best path.
Asked in SSC CGL 2016 (31 Aug, Shift 3)
Practice (1)
Q74Which algorithm is used to decide the path to transfer the packets from source to destination?
Show answer
Correct answer: A — Routing
Answer: (A)
The correct option is (A). -
75
An Integrated Circuit (IC), sometimes called a microchip, is a set of electronic circuits on one small flat piece of semiconductor material.
ICs revolutionized electronics by miniaturizing components.
Asked in SSC CGL 2016 (1 Sep, Shift 1)
Practice (1)
Q75The complete form of 'IC' in electronics is
Show answer
Correct answer: C — Integrated circuit
Answer: (C)
The correct option is (C). -
76
A modifier key in a computer keyboard is a special key that temporarily modifies the normal action of another key when pressed together.
Examples include Control, Shift, and Alt keys.
Asked in SSC CGL 2017 (9 Aug, Shift 3)
Practice (1)
Q76Which among the following is a 'Modifier key'?
Show answer
Correct answer: D — All options are correct
Answer: (D)
Ctrl, Shift and Alt are all modifier keys. -
77
The Enter key in MS-Word is used to insert a line break or move the cursor to the beginning of the next line.
Pressing Enter also creates a new paragraph.
Asked in SSC CGL 2017 (11 Aug, Shift 2)
Practice (1)
Q77Which key is used to move to next line in a Ms-Word document?
Show answer
Correct answer: A — Enter key
Answer: (A)
The Enter key moves to a new line or paragraph. -
78
A network bridge operates at the data link layer (Layer 2) of the OSI model, connecting multiple network segments.
Repeaters work at the physical layer, while routers work at the network layer.
Asked in SSC CGL 2016 (30 Aug, Shift 3)
Practice (1)
Q78In the following list of devices, which device is used in datalink layer?
Show answer
Correct answer: D — Bridge
Answer: (D)
The correct option is (D). -
79
Emulators are hardware or software that enables one computer system to behave like another computer system.
They replicate the exact functionality of the target system.
Asked in SSC CGL 2016 (6 Sep, Shift 3)
Practice (1)
Q79Programs that duplicate the functionality of one system on another system is known as
Show answer
Correct answer: A — Emulators
Answer: (A)
The correct option is (A). -
80
A micro-operation is a low-level operation performed on data stored in CPU registers.
Micro-operations help execute machine instructions step-by-step.
Asked in SSC CGL 2016 (8 Sep, Shift 2)
Practice (1)
Q80Which of the following is the operation executed on data stored in registers?
Show answer
Correct answer: C — Micro-operation
Answer: (C)
The correct option is (C).