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1.  
A powerful single-user microcomputer used for engineering and design work is called a:

Correct Answer: E [workstation]

Explanation:

Workstation = powerful single-user machine (Chapter 1 fact box).

2.  
A computer that combines analog input with digital processing, as in an ICU monitor, is a:

Correct Answer: C [hybrid computer]

Explanation:

Hybrid = analog + digital.

3.  
Which of the following is a volatile memory?

Correct Answer: A [Cache]

Explanation:

Cache (like RAM) loses its contents without power.

4.  
Which of these is an output device?

Correct Answer: D [Plotter]

Explanation:

A plotter prints large drawings; the rest are input devices.

5.  
Which language is a scripting language that runs inside web browsers?

Correct Answer: B [JavaScript]

Explanation:

JavaScript runs in browsers (it is not the same as Java); COBOL business, FORTRAN science, SQL databases.

6.  
Which translator converts the whole source program into object code before execution?

Correct Answer: E [Compiler]

Explanation:

Compiler – whole program; interpreter – line by line.

7.  
An operating system that must respond within fixed time limits, as in a car's airbag or a flight-control system, is a:

Correct Answer: A [Real-time]

Explanation:

Real-time OS = guaranteed response time.

8.  
Which Windows tool shows the running programs and can end a program that is not responding?

Correct Answer: C [Task Manager]

Explanation:

Task Manager (Ctrl + Shift + Esc) lists running programs and ends hung ones.

9.  
In MS Word, which shortcut aligns the selected paragraph to the centre?

Correct Answer: B [Ctrl + E]

Explanation:

Ctrl + E centre; C is copy; J justify; R right.

10.  
Cells B1:B4 hold 250, 400, 150 and 300. What does =MAX(B1:B4)-MIN(B1:B4) return?

Correct Answer: D [250]

Explanation:

MAX 400 − MIN 150 = 250.

11.  
101101₂ in decimal is:

Correct Answer: A [45]

Explanation:

32 + 8 + 4 + 1 = 45.

12.  
Which gate gives output 0 only when both inputs are 0?

Correct Answer: B [OR]

Explanation:

OR is 0 only for 0, 0.

13.  
Which device joins two different networks and forwards packets by IP address?

Correct Answer: E [Router]

Explanation:

Router – Network layer.

14.  
Which port does SMTP normally use?

Correct Answer: D [25]

Explanation:

SMTP 25; POP3 110; IMAP 143.

15.  
Which SQL command adds a new column to an existing table?

Correct Answer: C [ALTER]

Explanation:

ALTER TABLE … ADD changes the structure (DDL).

16.  
The number of rows in a relation is called its:

Correct Answer: C [cardinality]

Explanation:

Cardinality = rows; degree = columns.

17.  
Malware that secretly gathers information about a user's browsing and sends it to others is:

Correct Answer: D [spyware]

Explanation:

Spyware spies; adware shows ads.

18.  
Which of these provides two-factor authentication?

Correct Answer: A [ATM card + PIN]

Explanation:

Card (have) + PIN (know).

19.  
Which payment system is operated by the RBI?

Correct Answer: E [RTGS]

Explanation:

RTGS (and NEFT) – RBI.

20.  
DHCP stands for:

Correct Answer: B [Dynamic Host Configuration Protocol]

Explanation:

Gives IP addresses automatically.

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