JN0-102 · Question #292
Which two protocols use UDP as a transport protocol by default? (Choose two.)
The correct answer is C. DHCP D. RIP. DHCP and RIP are two common networking protocols that default to using UDP for their transport layer operations, enabling efficient communication for IP address assignment and routing updates, respectively.
Question
Which two protocols use UDP as a transport protocol by default? (Choose two.)
Options
- ATelnet
- BICMP
- CDHCP
- DRIP
How the community answered
(29 responses)- A3% (1)
- B10% (3)
- C86% (25)
Why each option
DHCP and RIP are two common networking protocols that default to using UDP for their transport layer operations, enabling efficient communication for IP address assignment and routing updates, respectively.
Telnet is a network protocol that uses TCP (port 23) for establishing a connection-oriented, reliable session for remote command-line access.
ICMP (Internet Control Message Protocol) operates directly at the Network Layer (Layer 3) of the OSI model, not at the Transport Layer, and therefore does not use UDP or TCP as a transport protocol.
DHCP (Dynamic Host Configuration Protocol) uses UDP (ports 67 for server, 68 for client) to broadcast requests and receive IP address assignments efficiently, without the overhead of TCP's connection establishment.
RIP (Routing Information Protocol) utilizes UDP (port 520) to periodically exchange routing information between routers, favoring speed and simplicity for network convergence over the reliability guarantees of TCP.
Concept tested: Protocols using UDP for transport
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_dhcp/configuration/xe-16/dhcp-xe-16-book/dhcp-overview.html
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