Which of the following statements can be associated with OSI model?

A. A structured way to discuss and easier update system components
B. One layer may duplicate lower layer functionality
C. Functionality at one layer no way requires information from another layer
D. It is an application specific network model

Explanation: The OSI model provides a standardized framework for network communication by dividing it into layers. This layered approach simplifies troubleshooting, enables modular updates, and ensures interoperability between different network devices and protocols.

OSI stands for __________

A. Open system interconnection
B. Operating system interface
C. Optical service implementation
D. Open service internet

Explanation: OSI is the abbreviation for Open System Interconnection. OSI model provides a structured plan on how applications communicate over a network, which also helps us to have a structured plan for troubleshooting. It is recognized by the ISO as the generalized model for computer network i.e. it can be modified to design any kind of computer network.

TCP/IP model does not have ______ layer but OSI model have this layer.

A. Session layer
B. Transport layer
C. Application layer
D. Network layer

Explanation: In OSI reference model, there are two layers which are not present in TCP/IP model. They are Presentation and Session layer. The functions of Presentation and Session layer in the OSI model are handled by the transport layer itself in TCP/IP.

Which layer is used to link the network support layers and user support layers?

A. Session layer
B. Data link layer
C. Transport layer
D. Network layer

Explanation: Physical, data link and network layers are network support layers and session, presentation and application layers are user support layers. The transport layer links these layers by segmenting and rearranging the data. It uses protocols like TCP and UDP.

Which address is used on the internet for employing the TCP/IP protocols?

A. Physical address and logical address
B. Port address
C. And logical address, port address and specific address are employed in both TCP/IP model and osi model. in TCP/IP, the addresses are more focused on the internet implementation of these addresses.
D. All of the mentioned

Explanation: The physical, logical, port and specific addresses are used in TCP/IP protocol. All the addressing schemes, that is physical (MAC) and logical address, port address and specific address are employed in both TCP/IP model and OSI model. In TCP/IP, the addresses are more focused on the internet implementation of these addresses.

TCP/IP model was developed _____ the OSI model.

A. Prior to
B. After
C. Simultaneous to
D. With no link to

Explanation: Several TCP/IP prototypes were developed at multiple research centers between 1978 and 1983, whereas OSI reference model was developed in the year 1984. TCP/IP was developed with the intention to create a model for the Internet while OSI was intended to be a general network model.

Which address is used to identify a process on a host by the transport layer?

A. Physical address
B. Logical address
C. Port address
D. Specific address

Explanation: A port number is a way to identify a specific process to which an Internet or other network message is to be forwarded when it arrives at a server. Some examples of port numbers are port 20 which is used for FTP data, port 22 which is used for SSH remote login ,and port 23 which is used for TELNET.

Transmission data rate is decided by ____________

A. Network layer
B. Physical layer
C. Data link layer
D. Transport layer

Explanation: Physical layer is a layer 1 device which deals with network cables or the standards in use like connectors, pins, electric current used etc. Basically the transmission speed is determined by the cables and connectors used. Hence it is physical layer that determines the transmission speed in network. Some of the cables used for high speed data transmission are optical fiber cables and twisted pair cables.