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1.  
A speedometer needle that moves smoothly with the speed of a vehicle is an example of:

Correct Answer: E [analog working]

Explanation:

Continuous quantity → analog.

2.  
Consider the following statements:
I. A computer is accurate if the data and program given to it are correct.
II. A computer can take its own decisions without any instructions.
III. Computers can store large amounts of data and recall it quickly.
Which of the statements given above is/are correct?

Correct Answer: D [Only I and III]

Explanation:

I and III true; II false – computers have no IQ; they follow instructions.

3.  
Match the port with its use:
List I: (a) HDMI; (b) VGA; (c) RJ-45; (d) USB
List II: (1) wired network cable; (2) older analog video; (3) digital audio and video; (4) general devices – keyboard, pen drive

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

Explanation:

HDMI digital AV; VGA analog video; RJ-45 Ethernet; USB devices.

4.  
The small memory on the motherboard, kept alive by a battery, that stores BIOS settings such as the date and time is:

Correct Answer: D [CMOS]

Explanation:

CMOS memory with its battery keeps the BIOS settings (Chapter 2).

5.  
Part of the hard disk or SSD that the OS uses as if it were RAM when RAM is full is called:

Correct Answer: C [virtual memory]

Explanation:

Virtual memory – bigger programs can run, but it is slower than RAM.

6.  
Odd one out:

Correct Answer: B [Web browser]

Explanation:

Web browser is application software; the rest are system software.

7.  
Testing of new software done by the developer's own team inside the company, before release to outside users, is:

Correct Answer: A [alpha testing]

Explanation:

Alpha = in-house; beta = limited outside users.

8.  
Which of these is a high-level (third-generation) language?

Correct Answer: E [Java]

Explanation:

Java is a third-generation language; SQL is 4GL.

9.  
Consider the following statements:
I. The kernel is the core part of the operating system.
II. NTFS is the common file system of Linux.
III. Virtual memory uses part of the disk as if it were RAM.
Which of the statements given above is/are correct?

Correct Answer: C [Only I and III]

Explanation:

I and III true; II false – NTFS is Windows; ext4 is common on Linux.

10.  
Stretch – Jobs with bursts 4, 9 and 2 ms arrive together in that order (FCFS). The average turnaround time is:

Correct Answer: C [10.67 ms]

Explanation:

Completion 4, 13, 15 → 32 ÷ 3 = 10.67 ms.

11.  
Which is NOT a function of an operating system?

Correct Answer: B [Typing a letter]

Explanation:

Typing a letter is done by an application (word processor).

12.  
Trick Spotter: a formula uses the interest rate in B1 and must keep pointing at B1 when it is copied both down the column and across the row. The quickest correct way to write the reference is:

Correct Answer: C [$B$1]

Explanation:

Lock both parts: $B$1 (press F4 once).

13.  
In PowerPoint, which shortcut duplicates the selected object?

Correct Answer: D [Ctrl + D]

Explanation:

Ctrl + D duplicates; Ctrl + M adds a new slide; Ctrl + K inserts a hyperlink; F5 starts the show.

14.  
Match the file extension with its program:
List I: (a) .xlsx; (b) .pptx; (c) .docx; (d) .csv
List II: (1) Excel; (2) Word; (3) comma-separated text; (4) PowerPoint

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

Explanation:

xlsx Excel; pptx PowerPoint; docx Word; csv plain comma-separated text.

15.  
Reverse question: the statement "One hexadecimal digit stands for exactly ____ binary digits" is correct when the blank is:

Correct Answer: E [4]

Explanation:

16 = 2⁴ → 4 bits per hex digit (3 bits per octal digit).

16.  
Stretch – The 4-bit Gray code of decimal 6 is:

Correct Answer: D [0101]

Explanation:

6 = 0110 → 0110 XOR 0011 = 0101.

17.  
Stretch – Y = (A + B)·C'. For how many of the 8 input combinations is Y = 1?

Correct Answer: A [3]

Explanation:

C = 0 (4 rows) and A + B = 1 (3 of them) → 3.

18.  
Stretch – What is the network address of 192.168.5.130 with mask 255.255.255.192?

Correct Answer: E [192.168.5.128]

Explanation:

130 = 10000010; 192 = 11000000 → 10000000 = 128.

19.  
Match the protocol with its port:
List I: (a) HTTP; (b) SSH; (c) POP3; (d) DNS
List II: (1) 110; (2) 53; (3) 80; (4) 22

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

Explanation:

HTTP 80; SSH 22; POP3 110; DNS 53.

20.  
In a star network of 12 computers, the central switch fails. How many computers can still communicate through it?

Correct Answer: C [0]

Explanation:

Every link passes through the central device – none can communicate.

21.  
A primary key made of two or more columns taken together is called a:

Correct Answer: B [composite key]

Explanation:

Composite key, e.g. {BranchCode, AccNo}.

22.  
Finding hidden patterns in large amounts of stored data, such as which customers are likely to take a loan, is called:

Correct Answer: C [data mining]

Explanation:

Data mining finds patterns, usually in a data warehouse.

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 TxnID FROM TXN WHERE Amount BETWEEN 9000 AND 50000 AND Status = 'OK' ORDER BY TxnID; returns:

Correct Answer: D [2, 4]

Explanation:

BETWEEN is inclusive: 50000 (2), 15000 (4), 9000 (8, but FAILED) → 2, 4.

24.  
Consider the following statements:
I. A worm needs a host file to spread.
II. Ransomware usually encrypts files and demands payment.
III. A rootkit hides itself and gives hidden administrator control.
Which of the statements given above is/are correct?

Correct Answer: E [Only II and III]

Explanation:

II and III true; I false – a worm spreads on its own.

25.  
Encrypting a message so that only the receiver can read it uses the:

Correct Answer: E [receiver's public key]

Explanation:

Encrypt with the receiver's public key; only her private key decrypts.

26.  
Spot My Mistake: a student wrote, "Vishing is a fraud in which a fake SMS asks the customer to click a link." What is wrong?

Correct Answer: B [Vishing uses voice (phone) calls; a fraud link by SMS is smishing]

Explanation:

Vishing = voice phishing; smishing = SMS phishing (Chapter 9).

27.  
The Cheque Truncation System (CTS) is operated by:

Correct Answer: A [NPCI]

Explanation:

NPCI operates CTS on the RBI's mandate (the RBI runs the clearing house and settlement).

28.  
A bank uses a provider's ready-made platform (OS, database, tools) only to build and run its own loan app. The cloud model is:

Correct Answer: B [PaaS]

Explanation:

Platform as a Service.

29.  
Odd one out:

Correct Answer: C [NEFT]

Explanation:

NEFT is operated by the RBI; the others by NPCI.

30.  
OLTP stands for:

Correct Answer: D [Online Transaction Processing]

Explanation:

Online Transaction Processing – daily transactions.

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