Basic CS-Networks [3i Infotech Placement]: Sample Questions 49 - 50 of 90

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Question 49

Networks
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Write in Short

Short Answer▾

What are the data units at different layers of the TCP/IP protocol suite?

Explanation

  • The data unit created at the application layer is called a message.
  • The transport layer the data unit created is called either a segment or a user datagram.
  • The network layer the data unit created is called the datagram.
  • The data link layer the datagram is encapsulated into a frame and finally transmitted as signals along the transmission media

Question 50

Networks
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Describe in Detail

Essay▾

Explain difference between TCP & UDP

Explanation

Difference between TCP & UDP
Difference between TCP & UDP
TCPUDP
Transmission Control ProtocolUser Datagram Protocol
Connection oriented protocolConnectionless protocol
Used in applications in which fast transmission of data not requiredPreferred in applications requiring priority of sending data on time and on faster rates
Slower speed of transferFaster speed
Rearranges data packets in the order specifiedNo inherent order as all packets are independent of each other.
Header size is 20 bytesHeader size is 8 bytes
ReliableUnreliable
Example: HTTP, FTP, SMTP etc.Example: DNS, DHCP, TFTP, SNMP, RIP, VOIP etc.

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