Home / Topic / Computer Networks
Topic

Computer Networks

Asked 4 times across 2 UPSC exams over 11 years (2015–2026), peaking in 2026.
4
PYQs
2
Exams
3
Years active
2015–2026
Span
2026
Peak
1/4
Answers
📅 Full chronological timeline →

Key insights

  • Most tested in ESE — 3 of 4 PYQs
  • Most asked in 2026
  • Recurs across 3 years (2015–2026)

How it travelled across exams

First appearance in each exam — the same idea, reframed.
EPFO 2015 ESE 2025

How the concept evolved

115
125
226
Rising — more than half its appearances (3 of 4) are since 2016.

Sample questions

You've seen the pattern — here are a few of the actual PYQs.
ESE2026
Five routers are to be connected in a point-to-point subnet. Between each pair of routers, the designers may put a high-speed line, a medium-speed line, a low-speed line, or no line. If it takes 100 ms of computer time to generate and inspect each topology, how long will it take to inspect all of them ?
  1. A 108,578·6 sec
  2. B 102,785·6 sec
  3. C 110,857·6 sec
  4. D 104,857·6 sec
Answer key not yet available (pending official release)
Engineering › Electronics
ESE2026
A group of N stations share a 56-kbps pure ALOHA channel. Each station outputs a 1000-bit frame on average once every 100 sec, even if the previous one has not yet been sent (e.g., the stations can buffer outgoing frames). What is the maximum value of N ?
  1. A 1003 stations
  2. B 1100 stations
  3. C 1010 stations
  4. D 1030 stations
Answer key not yet available (pending official release)
Engineering › Electronics
ESE2025
External companies are enabled to view some of a particular company's information and such sharing of information is known as
  1. A Ethernet
  2. B Internet
  3. C Extranet
  4. D Fibrenet
Answer key not yet available (pending official release)
Science & Technology › IT/Computing/Cyber

Study how UPSC repeats — not just the papers

₹199 / 1 year · Founding Member

Full access unlocks the three things no PYQ PDF gives you:
① Cross-exam learning — see the same idea recur across CSE, CAPF, CDS and NDA.
② Topic evolution — how each idea is framed, year by year.
③ Question intelligence — every PYQ + answer, linked to related concepts and similar questions.

e.g. Round Table Conference: CDS 2017 → CSE 2017 → … → CAPF 2024

15 days free, no card required — then ₹199 for 1 year.

Start your 15-day free trial →
CrispUPSC · YouTube · Telegram · About · What’s New · invite-only beta
💬 Feedback

Send feedback