CISCO PLACEMENT PREPARATION TEST-1 St. JOSEPH'S @ 26TH MARCH 25

What defines a computer network?   

• A device that shows output on a monitor   

• A group of connected computers and devices that share resources and communicate    

• Software for creating documents and presentations 

• The outer casing that protects internal computer parts   

How can the internet be best described?

• A collection of connected local area networks (LANs) 

• A random collection of computers 

• A network of connected wide area networks (WANs)   

• A single isolated network   

What does OSI stand for in networking?   

• Open System Interconnection   

• Optical Service Implementation 

• Open Service Internet   

• Operating System Interface   

In the context of a computer network, what are nodes? 

• The computer responsible for routing data 

• The computer where data is terminated 

• The computer that initiates data transmission   

• All of the above 

What is the primary function of the transport layer in the OSI model?   

• Data encapsulation    

• Error detection and correction     

• Establishing, maintaining, and terminating connections

• Formatting data for transmission 

What type of network covers a large geographical area, like a city, country, or the world?

• WAN

• PAN

• LAN

• MAN

In a computer network, what is the main function of the application layer?

• To provide network services to the applications

• To transmit data between network devices

• To package data for transfer

• To route data between networks

Which layer of the OSI model ensures the error-free transmission of data?

• Physical Layer

• Data Link Layer

• Network Layer

• Transport Layer

Which layer of the OSI model is responsible for establishing, managing, and terminating sessions between applications?

• Session Layer

• Transport Layer

• Application Layer

• Presentation Layer

What is the primary function of the Network Layer in the OSI model?

• To provide data routing paths for network communication

• To format data

• To establish connections

• To encode and decode data