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1.  
Match the generation with its main technology:
List I: (a) First; (b) Second; (c) Third; (d) Fourth
List II: (1) vacuum tubes; (2) integrated circuits; (3) microprocessors (VLSI); (4) transistors

Correct Answer: B [a-1, b-4, c-2, d-3]

Explanation:

1 tubes; 2 transistors; 3 ICs; 4 microprocessors.

2.  
The speed of supercomputers is usually measured in:

Correct Answer: A [FLOPS]

Explanation:

Floating-point operations per second.

3.  
Consider the following statements:
I. ROM is non-volatile.
II. Registers are the fastest memory in the computer.
III. A touch screen is only an output device.
Which of the statements given above is/are correct?

Correct Answer: C [Only I and II]

Explanation:

I and II true; III false – a touch screen is both input and output.

4.  
Which technology converts a scanned printed page into editable text?

Correct Answer: C [OCR]

Explanation:

OCR = Optical Character Recognition; OMR reads marks, MICR reads magnetic ink.

5.  
Which input device reads the characters printed in magnetic ink on cheques?

Correct Answer: A [MICR reader]

Explanation:

MICR = magnetic ink characters.

6.  
Consider the following statements:
I. A compiler reports all syntax errors after translating the whole program.
II. An interpreter produces a separate object file.
III. A loader places the executable program in memory for running.
Which of the statements given above is/are correct?

Correct Answer: C [Only I and III]

Explanation:

I and III true; II false – an interpreter runs line by line without a separate object file.

7.  
Odd one out:

Correct Answer: B [Spreadsheet]

Explanation:

Spreadsheet is application software; the rest are utilities.

8.  
Which translator converts and runs a program one statement at a time?

Correct Answer: D [Interpreter]

Explanation:

Interpreter – line by line; compiler – whole program first.

9.  
Stretch – Processes P1, P2, P3 (bursts 5, 3, 4 ms) arrive together; Round Robin with a 2 ms quantum. When does P2 finish?

Correct Answer: E [9 ms]

Explanation:

Slices: P1 0–2, P2 2–4, P3 4–6, P1 6–8, P2 8–9 → P2 ends at 9.

10.  
Match the Linux command with its use:
List I: (a) mkdir; (b) mv; (c) cat; (d) rm
List II: (1) remove files; (2) move or rename; (3) make directory; (4) display file contents

Correct Answer: D [a-3, b-2, c-4, d-1]

Explanation:

mkdir makes a directory; mv moves/renames; cat displays; rm removes.

11.  
An OS that gives each user a short slice of CPU time in turn, so that many users seem to work at the same time, is a:

Correct Answer: B [time-sharing OS]

Explanation:

Time-sharing = time slices among users.

12.  
The formula =SUM($A$1:A1) in B1 is copied down to B3. What is the formula in B3?

Correct Answer: A [=SUM($A$1:A3)]

Explanation:

$A$1 stays; A1 becomes A3 – a running total.

13.  
While editing a formula in Excel, which key cycles a cell reference through A1, $A$1, A$1 and $A1?

Correct Answer: C [F4]

Explanation:

F4 toggles absolute/relative references (Chapter 5); F2 edits the active cell.

14.  
In MS Word, Ctrl + Enter inserts a:

Correct Answer: E [page break]

Explanation:

Ctrl + Enter = page break.

15.  
Which character code is one standard for the characters of almost all writing systems, including Hindi and Tamil?

Correct Answer: D [Unicode]

Explanation:

Unicode covers almost all scripts; its first 128 code points are the same as ASCII.

16.  
Which 8-bit character code is used mainly on IBM mainframe computers?

Correct Answer: E [EBCDIC]

Explanation:

EBCDIC = Extended Binary Coded Decimal Interchange Code (IBM mainframes); ASCII is 7-bit.

17.  
Consider the following statements:
I. A NOR gate gives 1 only when all inputs are 0.
II. XOR of two equal bits is 1.
III. NAND and NOR are universal gates.
Which of the statements given above is/are correct?

Correct Answer: D [Only I and III]

Explanation:

I and III true; II false – XOR of equal bits is 0.

18.  
Wi-Fi (wireless LAN) is based on which family of IEEE standards?

Correct Answer: C [IEEE 802.11]

Explanation:

802.11 = Wi-Fi; 802.3 is wired Ethernet.

19.  
Consider the following statements:
I. A switch works at the Data link layer.
II. UDP guarantees delivery of every packet.
III. IMAP uses port 143.
Which of the statements given above is/are correct?

Correct Answer: C [Only I and III]

Explanation:

I and III true; II false – UDP is connectionless and does not guarantee delivery.

20.  
Which IP address is in a private range?

Correct Answer: A [192.168.45.3]

Explanation:

Only 192.168.x.x here; 192.169 and 172.33 are outside the private blocks.

21.  
A large store of historical data collected from many systems and kept for analysis and reports, not for daily transactions, is a:

Correct Answer: B [data warehouse]

Explanation:

Data warehouse; data mining then finds patterns in it.

22.  
In an ER diagram, a weak entity set is drawn as a:

Correct Answer: A [double rectangle]

Explanation:

Double rectangle = weak entity set; rectangle = entity set; diamond = relationship.

23.  

Directions: The next question uses the table TXN:

TxnID Mode Amount Status
1 UPI 1200 OK
2 NEFT 50000 OK
3 UPI 800 FAILED
4 IMPS 15000 OK
5 UPI 2500 OK
6 RTGS 400000 OK
7 NEFT 75000 PENDING
8 IMPS 9000 FAILED
SELECT Mode FROM TXN GROUP BY Mode HAVING SUM(Amount) > 20000 ORDER BY Mode; returns:

Correct Answer: B [IMPS, NEFT, RTGS]

Explanation:

Totals: UPI 4500, NEFT 125000, IMPS 24000, RTGS 400000 → IMPS, NEFT, RTGS.

24.  
Match the attack with its clue:
List I: (a) Smishing; (b) Pharming; (c) Whaling; (d) Keylogger
List II: (1) phishing aimed at top executives; (2) fraud link by SMS; (3) records keystrokes; (4) correct address, fake site (DNS)

Correct Answer: E [a-2, b-4, c-1, d-3]

Explanation:

SMS → smishing; DNS → pharming; executives → whaling; keys → keylogger.

25.  
A firewall mainly protects a network by:

Correct Answer: C [filtering incoming and outgoing traffic by rules]

Explanation:

Firewall = traffic filter.

26.  
A group of infected computers ('zombies') controlled remotely by an attacker, often used for DDoS or spam, is a:

Correct Answer: D [botnet]

Explanation:

Bot/botnet = zombie army (Chapter 9).

27.  
Consider the following statements:
I. UPI and IMPS are operated by NPCI.
II. NEFT settles each transaction individually in real time.
III. A brown label ATM carries a bank's brand.
Which of the statements given above is/are correct?

Correct Answer: D [Only I and III]

Explanation:

I and III true; II false – NEFT works in batches; RTGS is real time.

28.  
Stretch – Which of these card numbers satisfies the Luhn check?

Correct Answer: A [4556737586899855]

Explanation:

Only one gives a Luhn total that is a multiple of 10.

29.  
Cheques are cleared by sending their images instead of the paper in:

Correct Answer: B [CTS]

Explanation:

Cheque Truncation System.

30.  
Which of these is a recursive acronym?

Correct Answer: D [PHP]

Explanation:

PHP: Hypertext Preprocessor.

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