COMPUTER NETWORKING

DATA LINK LAYER WIRED NETWORKS

WIRED LANS ETHERNET PROTOCOL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are two services provided by the OSI network layer
A
performing error detection
B
routing packets toward the destination
C
encapsulating PDUs from the transport layer
D
placement of frames on the media
E
collision detection
Explanation: 

Detailed explanation-1: -What are two services provided by the OSI network layer? (Choose two.) Error detection, placing frames on the media, and collision detection are all functions of the data ink layer.

Detailed explanation-2: -OSI network layer is a third layer that performs routing packets, encapsulation, addressing, and so on.

Detailed explanation-3: -Services provided to the transport layer Logical Addressing − Network layer adds header to incoming packet which includes logical address to identify sender and receiver. Routing − It is the mechanism provided by Network Layer for routing the packets to the final destination in the fastest possible and efficient way.

Detailed explanation-4: -What are two services provided by the OSI network layer? Routing packets toward the destination. Encapsulating PDU’s from the transport layer.

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