SSC CGL Computer – Memory, Storage, Backup Devices & Ports – Level 2 · Exam Level · Section III pace

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SSC CGL Computer – Memory, Storage, Backup Devices & Ports – Level 2 · Exam Level · Section III pace – 15 questions, subject: Computer Knowledge. Every question has the correct answer with a one-line explanation; tap "Show Answer". Free practice for TNPSC, UPSC, SSC, Bank and RRB exams – Shanmugam IAS Academy, Coimbatore.

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1.  
Arrange in orderArrange in increasing order of size: GB, KB, PB, MB, TB

Correct Answer: B [KB, MB, GB, TB, PB]

Explanation:

Kilo → Mega → Giga → Tera → Peta.

2.  
Match the followingMatch the memory with its feature:
P. PROM Q. EPROM R. EEPROM S. Flash
1. Erased by UV light 2. Erased electrically in blocks 3. Written only once 4. Erased electrically byte by byte

Correct Answer: A [P-3, Q-1, R-4, S-2]

Explanation:

PROM once; EPROM UV; EEPROM byte-wise electric; flash block-wise.

3.  
12,288 MB is equal to:

Correct Answer: C [12 GB]

Explanation:

Answer: 12 GB. 12,288 ÷ 1,024 = 12 GB.

4.  
Odd one outOdd one out (by technology):

Correct Answer: D [Pen drive]

Explanation:

CD, DVD and Blu-ray are optical; a pen drive is flash.

5.  
Assertion–Reason
A: A Blu-ray disc holds more data than a DVD of the same size.
R: Blu-ray uses a shorter-wavelength (blue-violet) laser, allowing smaller pits.

Correct Answer: A [Both A and R are true and R explains A]

Explanation:

Shorter wavelength → smaller pits → more data; R explains A.

6.  
Which backup copies only the data changed since the last backup of any type?

Correct Answer: C [Incremental backup]

Explanation:

Since the last backup → incremental.

7.  
Part of the hard disk used by the operating system as an extension of RAM is called:

Correct Answer: B [Virtual memory]

Explanation:

Virtual memory (page file) lives on the disk.

8.  
A VGA port carries:

Correct Answer: D [analog video only]

Explanation:

VGA is the old analog video port (15 pins).

9.  
True/False countHow many of these are true?
(i) A hard disk stores data magnetically.
(ii) A CD is read using a magnetic head.
(iii) Tracks are concentric circles on a platter.
(iv) An SSD has no moving parts.

Correct Answer: A [3]

Explanation:

(ii) is false – a CD is read by a laser; the rest are true.

10.  
The RJ-45 connector is used for:

Correct Answer: C [wired Ethernet network cables]

Explanation:

RJ-45 = 8-contact Ethernet jack; RJ-11 = telephone.

11.  
The pink 3.5 mm jack on a computer's audio panel is meant for:

Correct Answer: B [a microphone]

Explanation:

Green out, pink mic, blue line in.

12.  
Fill in the blankData from the CPU's most-used locations is kept in ______ to reduce waiting for RAM.

Correct Answer: D [cache memory]

Explanation:

Cache sits between CPU and RAM.

13.  
Statement-basedWhich statement about SSDs and hard disks is correct?

Correct Answer: B [SSDs are faster because they have no moving parts]

Explanation:

SSD = flash, no seek or rotation delay.

14.  
A CD-R disc can be:

Correct Answer: D [written once and read many times]

Explanation:

R = recordable once (WORM); RW = rewritable.

15.  
Reverse questionThe answer is 'differential backup'. Which description fits?

Correct Answer: C [Copies everything changed since the last full backup]

Explanation:

Differential = since the last FULL backup.

➤ Full notes, shortcuts and every answer explained – SSC CGL 2026 Computer Knowledge book (₹149): www.shanmugamiasacademy.in/study-materials/ssc-cgl-computer-knowledge

📘 SSC CGL 2026 – Computer Knowledge (Tier II Paper I – Section III)
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