GATE Computer Networks: IPv4: Addressing, CIDR, Fragmentation and NAT – Previous Year Questions
22 GATE previous year questions on IPv4: Addressing, CIDR, Fragmentation and NAT (Computer Networks, Computer Science) with answers and explanations, from every paper.
- GATE 2016 CS Q34 – Which one of the following protocols is NOT used to resolve one form of address to another one?
- GATE 2016 CS Q63 – An IP datagram of size 1000 bytes arrives at a router. The router has to forward this packet on a link whose MTU (maximum transmission unit) is 100…
- GATE 2015 CS Q26 – Which one of the following fields of an IP header is NOT modified by a typical IP router?
- GATE 2018 CS Q64 – Consider an IP packet with a length of 4,500 bytes that includes a 20-byte IPv4 header and a 40-byte TCP header. The packet is forwarded to an IPv4…
- GATE 2019 CS Q38 – Consider three machines M, N, and P with IP addresses 100.10.5.2, 100.10.5.5, and 100.10.5.6 respectively. The subnet mask is set to 255.255.255.252…
- GATE 2026 CS (CS2) Q33 – If an IP network uses a subnet mask of 255.255.240.0, the maximum number of IP addresses that can be assigned to network interfaces is . (answer in…
- GATE 2026 CS (CS1) Q56 – An ISP having an address block 202.16.0.0/15 assigns a block of 6000 IP addresses to a client, using the classless inter-domain routing (CIDR)…
- GATE 2025 CS (CS2) Q18 – A machine receives an IPv4 datagram. The protocol field of the IPv4 header has the protocol number of a protocol X. Which ONE of the following is NOT…
- GATE 2025 CS (CS2) Q23 – Consider a network that uses Ethernet and IPv4. Assume that IPv4 headers do not use any options field. Each Ethernet frame can carry a maximum of 1500…
- GATE 2025 CS (CS1) Q57 – Suppose a message of size 15000 bytes is transmitted from a source to a destination using IPv4 protocol via two routers as shown in the figure. Each…
- GATE 2024 CS (CS2) Q28 – Which of the following statements about IPv4 fragmentation is/are TRUE?
- GATE 2024 CS (CS2) Q32 – Which of the following fields of an IP header is/are always modified by any router before it forwards the IP packet?
- GATE 2024 CS (CS2) Q38 – Which one of the following CIDR prefixes exactly represents the range of IP addresses 10.12.2.0 to 10.12.3.255?
- GATE 2024 CS (CS1) Q31 – Which of the following fields is/are modified in the IP header of a packet going out of a network address translation (NAT) device from an internal…
- GATE 2024 CS (CS1) Q58 – A router has forwarding entries: 10.1.1.0/24→R1, 10.1.1.128/25→R2, 10.1.1.64/26→R3, 10.1.1.192/26→R4. The router forwards 20 packets each to 5 hosts…
- GATE 2024 CS (CS1) Q65 – Consider sending an IP datagram of size 1420 bytes (including 20 bytes of IP header) from a sender to a receiver over a path of two links with a…
- GATE 2023 CS Q65 – The forwarding table of a router is shown below. Subnet Number / Subnet Mask / Interface ID: 200.150.0.0 / 255.255.0.0 / 1 200.150.64.0 /…
- GATE 2022 CS Q22 – Consider an enterprise network with two Ethernet segments, a web server and a firewall, connected via three routers as shown below. [Figure: the…
- GATE 2022 CS Q55 – 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…
- GATE 2021 CS Q55 – Consider two hosts P and Q connected through a router R. The maximum transfer unit (MTU) value of the link between P and R is 1500 bytes, and between…
- GATE 2020 CS Q25 – Consider the following statements about the functionality of an IP based router. I. A router does not modify the IP packets during forwarding. II. It…
- GATE 2020 CS Q48 – An organization requires a range of IP addresses to assign one to each of its 1500 computers. The organization has approached an Internet Service…