Answers
21) When we need several transport services to function for our application, we need Good throughput and good data integrity. (OPTION B)
Our App will have several services that are functioning so that we will have a fast transfer of data and data should reach and arrive correctly. This is called data integrity.
22)UDP ( User Datagram Protocol ) have features like:
- UDP will not provide any flow control. Since it's a connectionless protocol, it won't provide any flow control.
- UDP is the Unreliable protocol because we can't be sure if the data packets will reach the destination or not.
- We can't interpret the time and can't guarantee security for the data we transferred.
- OPTION C
23) OPTION -D
Layers in the ISO/OSI model are:
- Application Layer
- Presentation Layer
- Session Layer
- Transport Layer
- Network Layer
- Data Link layer
- Physical Layer
Layers in the TCP/IP model are:
- Application Layer
- Transport Layer
- Network / Internet Layer
- Data Link layer
- Physical Layer
Hence, we see that the presentation and session layers are the missing layers.
24)OPTION C
UDP has a checksum of 16 bits. This checksum will be used to detect the errors in the data we transmitted.
It Contains the total length of the user datagram, header, and data.
25)OPTION A
Congestion results in the reduced quality of the services provided by the application.
This can be due to too many hosts in the domain, low bandwidth, multicasting etc.,
It will result in the consequences like
- LOSS OF PACKETS DATA
- DELAY IN THE TRANSMISSION TIME
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