Gate2017 ss Q28

0. Consider the following statements about the routing protocols, Routing Information Protocol (RIP) and Open Shortest Path First (OSPF) in an IPv4 network.
I. RIP uses distance vector routing
II. RIP packets are sent using UDP
III. OSPF packets are sent using TCP
IV. OSPF operation is based on link-state routing
Which of the statements above are CORRECT?

Answer
Comment
Array

Option : C
Explanation :
Statement (1): RIP uses distance vector routing. “CORRECT”
RIP is one of the oldest DVR protocol which employ the hop count as a routing metric.
Statement (2): RIP packets are sent using UDP. “CORRECT”
RIP uses the UDP as its transport protocol, and is assigned the reserved port no 520
Statement (3): OSPF packets are sent using TCP. “INCORRECT”
OSPF does not use a transport protocol, such as UDP (or) TCP, but encapsulates its data directly in IP packets.
Statement (4): OSPF operation is based on link state routing. “CORRECT”
OSPF is a routing protocol which uses link state routing (LSR) and works within a single autonomous system.
Hence Option “C” is correct.

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