Computer Science and Information Technology
GATE CSE concept:cidr-notation PYQs
Build your understanding with focused practice from past exam papers.
How to practice concept:cidr-notation
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–2 of 2. Imported answers require independent review unless marked reviewed.
Question 40
Open questionCSMCQ2 marksNeeds review
A packet with the destination IP address 145.36.109.70 arrives at a router whose routing table is shown. Which interface will the packet be forwarded to?
Subnet Address | Subnet Mask (in CIDR notation) | Interface |
|---|---|---|
145.36.0.0 | /16 | E1 |
145.36.128.0 | /17 | E2 |
145.36.64.0 | /18 | E3 |
145.36.255.0 | /24 | E4 |
Default | -- | E5 |
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 55
Open questionCSMSQ2 marksNeeds review
Consider routing table of an organization’s router shown below:
Subnet Number | Subnet Mask | Next Hop |
|---|---|---|
12.20.164.0 | 255.255.252.0 | R1 |
12.20.170.0 | 255.255.254.0 | R2 |
12.20.168.0 | 255.255.254.0 | Interface 0 |
12.20.166.0 | 255.255.254.0 | Interface 1 |
default | | R3 |
Which of the following prefixes in CIDR notation can be collectively used to correctly aggregate all of the subnets in the route table?
Your answerSelect all correct options. You can choose more than one.
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