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10 Routing Protocol MCQ

10 multiple-choice questions on Routing protocol s with explanations, useful for UGC NET, SET, GATE, ISRO, and other competitive exams.


Question 1: Purpose of Routing Protocols

Q1: What is the primary purpose of a routing protocol?

  • A) To assign IP addresses to devices

  • B) To determine the best path for data packets to reach their destination

  • C) To encrypt data during transmission

  • D) To physically connect different networks

Answer: B) To determine the best path for data packets to reach their destination
Explanation: Routing protocols help routers determine the most efficient path for data transmission across a network, ensuring fast and reliable communication.


Question 2: Classification of Routing Protocols

Q2: Routing protocols can be broadly classified into which two main categories?

  • A) TCP and UDP

  • B) Distance Vector and Link-State

  • C) IPv4 and IPv6

  • D) Static and Dynamic

Answer: B) Distance Vector and Link-State
Explanation: Routing protocols are categorized as Distance Vector (e.g., RIP), which use hop count for route selection, and Link-State (e.g., OSPF), which consider network topology.


Question 3: Distance Vector Routing Protocol

Q3: Which of the following is an example of a Distance Vector routing protocol?

  • A) OSPF

  • B) RIP

  • C) BGP

  • D) IS-IS

Answer: B) RIP
Explanation: Routing Information Protocol (RIP) is a Distance Vector protocol that determines routes based on hop count, making it simple but less scalable.


Question 4: Link-State Routing Protocol

Q4: Which of the following is a Link-State routing protocol?

  • A) RIP

  • B) OSPF

  • C) BGP

  • D) EIGRP

Answer: B) OSPF
Explanation: Open Shortest Path First (OSPF) is a Link-State protocol that uses Dijkstra’s algorithm to compute the shortest path.


Question 5: Routing in Large Networks

Q5: Which routing protocol is best suited for large-scale networks like the Internet?

  • A) RIP

  • B) OSPF

  • C) BGP

  • D) EIGRP

Answer: C) BGP
Explanation: Border Gateway Protocol (BGP) is the de facto protocol used for routing between Autonomous Systems (AS) on the Internet, making it ideal for large networks.


Question 6: Hybrid Routing Protocol

Q6: Which of the following is a Hybrid routing protocol?

  • A) RIP

  • B) OSPF

  • C) EIGRP

  • D) IS-IS

Answer: C) EIGRP
Explanation: Enhanced Interior Gateway Routing Protocol (EIGRP) combines features of both Distance Vector and Link-State protocols for efficiency and scalability.


Question 7: Administrative Distance

Q7: What is the administrative distance of RIP?

  • A) 120

  • B) 110

  • C) 90

  • D) 170

Answer: A) 120
Explanation: Administrative Distance (AD) is a measure of a protocol’s trustworthiness. RIP has an AD of 120, making it less preferred than OSPF (110) and EIGRP (90).


Question 8: Routing Table Update Interval in RIP

Q8: How often does RIP update its routing table?

  • A) Every 10 seconds

  • B) Every 30 seconds

  • C) Every 60 seconds

  • D) Every 90 seconds

Answer: B) Every 30 seconds
Explanation: RIP sends updates to its neighboring routers every 30 seconds, which can lead to slower convergence compared to modern protocols.


Question 9: Protocol for Wireless Networks

Q9: Which routing protocol is commonly used in wireless ad-hoc networks?

  • A) OSPF

  • B) RIP

  • C) AODV

  • D) BGP

Answer: C) AODV
Explanation: Ad-hoc On-Demand Distance Vector (AODV) is a routing protocol specifically designed for wireless ad-hoc networks, enabling dynamic route discovery.


Question 10: Convergence Speed

Q10: Which routing protocol has the fastest convergence time?

  • A) RIP

  • B) OSPF

  • C) BGP

  • D) EIGRP

Answer: D) EIGRP
Explanation: EIGRP uses an advanced Diffusing Update Algorithm (DUAL), which allows rapid convergence by maintaining backup routes in its topology table.

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