Network Layer - OSI MCQs with answers Page - 3

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A

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Q. Which of the following is NOT a Network Layer protocol?

  • (A) IP
  • (B) ICMP
  • (C) TCP
  • (D) ARP

A

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Q. What is the role of the Time-to-Live (TTL) field in an IP packet?

  • (A) To identify the destination MAC address
  • (B) To indicate how many hops a packet can traverse
  • (C) To specify encryption methods
  • (D) To determine the packet's size

A

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Q. Which Network Layer device uses routing tables to make forwarding decisions?

  • (A) Switch
  • (B) Router
  • (C) Hub
  • (D) Bridge

A

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Q. Which Network Layer protocol is responsible for addressing and routing packets between networks?

  • (A) TCP
  • (B) IP
  • (C) Ethernet
  • (D) UDP

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Q. Which protocol allows hosts to automatically obtain an IP address on a network?

  • (A) DNS
  • (B) ARP
  • (C) DHCP
  • (D) HTTP

A

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Q. Which of the following is used to send echo request and echo reply messages?

  • (A) IP
  • (B) TCP
  • (C) ICMP
  • (D) UDP

A

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Q. Which addressing is required to uniquely identify devices across different networks?

  • (A) MAC Address
  • (B) IP Address
  • (C) Port Number
  • (D) Process ID

A

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Q. Which Network Layer protocol helps detect unreachable destinations in a network?

  • (A) TCP
  • (B) UDP
  • (C) ICMP
  • (D) ARP

A

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Q. Which protocol supports NAT (Network Address Translation) operations at the Network Layer?

  • (A) IP
  • (B) TCP
  • (C) ARP
  • (D) UDP

A

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Q. Which of the following fields in an IP packet header helps to avoid infinite looping of packets?

  • (A) Source Address
  • (B) Destination Address
  • (C) Time to Live (TTL)
  • (D) Protocol

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