10 Questions
What is the primary function of the network layer in the OSI model?
Routing packets and determining the best path across a network
What process is involved in encapsulating data from upper layers into network packets?
Packetizing
Which of the following is NOT a service offered by the network layer?
Encrypting data for secure transmission
What is the role of routers in the network layer?
Forwarding packets based on their destination addresses
What information is typically included in the header of a network layer packet?
Source and destination IP addresses
Which layer in the OSI model is responsible for controlling traffic when subnets become overloaded?
Network layer
What is the purpose of assigning physical addresses in the network layer?
To identify devices on a local network
How do routers handle the source and destination addresses in a network layer packet?
They are not allowed to change either the source or destination address
What is the purpose of the routing function in the network layer?
To discover the best path across a physical network for packet transmission
Which of the following is NOT a service offered by the network layer protocol?
Error checking and flow control
Test your knowledge on the services provided to the transport layer and virtual circuits in networking. Understand the independence of router technology, shielding of the transport layer from router details, and uniform numbering plans for network addresses.
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