OSI and TCP/IP Models

Routers belong to which Layer of the OSI Model?

• Data Link

• Transport

• Physical

• Network

OSI Stands for

• Open System Interconnection

• Optical service Implementation

• Operating system Interface

• Open Site Interface

How many layers are there in the OSI Model

• 4

• 5

• 6

• 7

Which of the following would operate in the Application Layer

• POP3

• IP

• MAC

• RJ45

How does TCP differ from UDP?

• TCP belongs to OSI Model while UDP does not belong

• TCP belongs to the Network Layer, UDP does not

• TCP is a reliable data transport Mechanism

• TCP is a connection-less protocol

Which of the following layers is present in the OSI model but not in the TCP/IP Model?

• Physical

• Transport

• Session

• Network

Which Layer of OSI Model is used to deal with mechanical and electrical specifications e.g. RJ45

• Physical

• Transport

• Data Link

• Network

Frame relay in TCP/IP layer model works at (a)   layer

Which 2 statements correctly describe steps in the OSI data encapsulation process?

• The transport layer divides a data stream into segments and may add reliability and flow control information

• The data link layer adds physical source and destination addresses and an FCS to the segment

• Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information

• Packets are created when the network layer adds Layer 3 addresses and control

What layer of the OSI Model is included in the old legacy TCP/IP Model’s INTERNET layer?

• Application

• Network

• Presentation

• Session