Computer Networks: Class 12 Previous Year Questions

Computer Networks questions asked in CBSE board exams

Repeated questions first. Open the free app to see each question as it appeared in the paper, with its marking scheme.

1. Expand the term XML. 1 Q. Nos. 20 and 21 are Assertion (A) and Reason (R) based questions. Mark the correct choice as : (A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation for Assertion (A). (B) Both Assertion (A) and Reaso…
   Board 20261 markAssertion-ReasonRepeated: 2025,2026
2. Expand ARPANET. Q. Nos. 20 and 2l are Assertion (A) and Reason (R) based questions. Mark the correct choice as (A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation for Assertion (A). (B) Both Assertion (A) and Reason (R) are…
   Board 20252 marksAssertion-ReasonRepeated: 2025,2026
3. * 16 P a g e 29. (a)      "Space.txt"  text file    (digits)          (return)      ,       : 3 Space exploration has unlocked incredible advancements i…
   Board 20263 marksshort answer
4. Which network device serves as the entry and exit point of a network, as all data coming in or going out of a network must first pass through it in order to use routing paths ? 1 (A) Modem (B) Gateway (C) Switch (D) Repeater
   Board 20261 markMCQ
5. ·Swabhaav' is a big NGO working in the field of Psychological Treatment and Counselling, having its Head Office in Nagpur. It is planning to set up a center in Vijayawada. The Vijayawada Center will have four blocks - ADMIN, PSYCHIATRY, PSYCHOLOGY, and ICU. Yo…
   Board 20254 marksshort answer
6. (signal)(transmit) (Hub) (A) (B) (Ethernet Card) Ruie (Repeater) (C) (D) (Modem) 91 Page 8 of 32 12. Which of the following built-in function/method returns a dictionary ? dict() (A) (B) keys () (C) values () (D) items() 13. Which of the following is a DML com…
   Board 20251 markMCQ
7. Which of the following options is the correct protocol used for phone calls over the internet ? (A) PPP (B) FTP HTTP (C) (D) VoIP
   Board 20251 markMCQ
8. Infotainment Ltd. is an event management company with its prime office located in Bengaluru. The company is planning to open its new division at three different locations in Chennai named as - Vajra, Trishula and Sudershana. 1 × 5= 5 You, as a networking exper…
   Board 20245 markslong answer
9. (A) (i) Expand the following terms : 1+1= 2 XML·PPP (i) Give one difference between circuit switching and packet switching. OR (B) () Define the term web hosting. (i) Name any two web browsers. 2191
   Board 20242 marksshort answer
10. Which protocol out of the following is used to send and receive emails over a computer network ? (b) (a) (c) FTP (d) SMTP
    Board 20241 markMCQ
11. l. Which of the following options is the correct unit of measurement for network bandwidth ? (b) (a) KB Bit (c) Hz (d) Km
    Board 20241 markMCQ
12. Fill in the blank : is a set of rules that needs to be followed by the communicating parties in order to have a successful and reliable data communication over a network. 2191
    Board 20241 markvery short
13. l. Quickdev, an IT based firm, located in Delhi is planning to set up a network for its four branches within a city with its Marketing department in Kanpur. As a network professional, give solutions to the questions (i) to (v), after going through the branches…
    Board 20235 markslong answer
14. Differentiate between wired and wireless transmission. (a) OR (b) Differentiate between URL and domain name with the help of an appropriate example.
    Board 20232 marksshort answer
15. (a) Write the full forms of the following : 23. (i) HTML (i) TCP (b) What is the need of Protocols ?
    Board 20232 marksshort answer
16. Fill in the blank : is used for point-to-point communication or unicast communication such as radar and satellite. (a) (b) INFRARED WAVES BLUETOOTH (c) MICROWAVES (d) RADIOWAVES
    Board 20231 markMCQ
17. Galaxy Provider Ltd. is planning to connect its office in Texas, USA with its branch at Mumbai. The Mumbai branch has 3 Offices in three blocks located at some distance from each other for different operations ADMIN, SALES and ACCOUNTS. As a network consultant…
    Board 20221 markMCQ
18. (i) Differentiate between Bus Topology and Tree Topology. Also, write one advantage of each of them. OR Differentiate between HTML and XML. (ii) What is a web browser ? Write the names of any two commonly used web browsers. Page 9 91
    Board 20221 markvery short
19. Expand the following : (i) VoIP, PPP (i) Riya wants to transfer pictures from her mobile phone to her laptop. She uses Bluetooth technology to connect two devices. Which type of network (PAN/LAN/MAN/WAN) will be formed in this case ? 91 Page
    Board 20221 markvery short
20. Fill in the blank: _________ protocol provides access to services hosted on a remote computer. a. FTP b. PPP c. Telnet d. SMTP 1 Q17 and 18 are ASSERTION AND REASONING based questions. Mark the correct choice as (a) Both A and R are true and R is the correct e…
    CBSE practice 2023-241 markAssertion-Reason

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