Unit 1- Group B

How many layers are there in OSI model?

• 5

• 6

• 7

• 8

Data unit at network layer is known as _

• Bits

• Frames

• Segments

• Packets

What is physical address?

• IP address

• Port address

• MAC address

• Specific address

What is logical address?

• Internet Protocol address

• Media access control address

• Port address

• Specific address

Data link layer is responsible for _ delivery of message.

• Hop-to-hop

• end-to-end

• process-to-process

• source-to-destination

Which layer is closest to the user?

• physical

• application

• network

• transport

TCP/IP is maintained by

• IEEE

• IETF

• ISO

• ICANN

Protocol at transport layer is

• DHCP

• IP

• ARP

• TCP

Layer in TCP/IP are

• Link

  Network

  Transport

  Application

• Link

  data link

  transport

  application

• physical

  network

  session

  presentation

• link

  network

  presentation

  application

In the mapping of TCP/IP and OSI model, the link layer in TCP/IP is mapped with _

• data link and physical

• data link and network

• network and session

• transport and network