Which of the following statements is/are true with regard to various layers in the Internet stack? P: At the data link layer, a packet of transmitted information is called a frame Q: At the network layer, a packet of transmitted information is called a segment
P only
A data-link-layer data unit is a frame, so P is true. An IP network-layer data unit is a packet or datagram; segment is the TCP transport-layer term. Thus Q is false and only P is correct.
Important Questions from Data Link Layer
If a file consisting of 50,000 characters takes 40 seconds to send, then the data rate is ______
Which one of the following functionality is not performed by data link layer?
- It is necessary to design a link-layer protocol between two hosts that are directly connected over a lossless link of length 3000 kilometers. Assume that the link bandwidth is $10^8$ bits per second and that the propagation delay in the link is 5 nanoseconds per meter. Every transmitted data byte is assigned a unique sequence number.
Let $N$ be the minimum number of bits needed for the sequence number field in the protocol header such that
i. the sequence numbers do not wrap around before 60 seconds, and
ii. the maximum utilization of the link is achieved.
The value of $N$ is ______. (answer in integer) In a LAN environment, switches improve network efficiency primarily by:
Which of the following protocols is responsible for converting higher level protocol addresses to physical network addresses?
