Question 1

Question 1Assertion (A): ARPANET was the first computer network created in the year 1969 by Advanced Research Projects Agency (ARPA) of the Pentagon, USA.Reasoning (R): The objective of creating ARPANET was to develop a reliable communication network for the US military defence services for sending and receiving instant messages.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationARPANET, jointly designed and named by the Advanced Research Projects Agency (ARPA) and the US Department of Defense (DoD), was the first computer network and came into existence in 1969. The objective of creating ARPANET was to develop a reliable communication network for the US military defense services, enabling them to send and receive instant messages and share data.

Question 2

Question 2Assertion (A): A Router is more reliable and intelligent device than a Hub or Switch.Reasoning (R): Router has advanced capabilities as it can analyze the data being sent over a network and decide/alter how it is packaged before sending it to another network.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationA router is considered as a more reliable and intelligent device than a hub or switch because it has advanced capabilities to analyze the data being sent over a network, decide or alter how it is packaged, and send it to different computer networks.

Question 3

Question 3Assertion (A): A PAN (Personal Area Network) is established within the vicinity of a room (20 to 30 sq.ft.) for sharing information with the computers.Reasoning (R): A WAN (Wide Area Network) spans thousands of kilometres and is used to establish connectivity across several countries and continents.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true but R is not the correct explanation of A.ExplanationPANs (Personal Area Networks) are small networks used to establish communication between a computer and other devices in proximity, typically up to 10 meters (20 to 30 sq.ft.). On the other hand, a WAN (Wide Area Network) spans a large geographical area across countries and continents. A WAN can cover an area with a radius spanning hundreds of kilometers.

Question 4

Question 4Assertion (A): A Repeater is a device that amplifies the network over geographical distance.Reasoning (R): A Hub is a device which is used to connect more than one device in the network.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true but R is not the correct explanation of A.ExplanationA repeater is a device that amplifies a signal transmitted across the network so that the signal is received in the same way it is sent. A hub is a hardware device used to connect several computers together using different ports.

Question 5

Question 5Assertion (A): VoIP stands for Voice over Internet Protocol.Reasoning (R): VolP is a technology that allows us to make voice calls using a broadband connection instead of a regular phone line.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationVoIP stands for Voice over Internet Protocol, and it is a technology that allows us to make voice calls using a broadband connection instead of a regular phone line. The voice calls are first digitized, compressed, and then fragmented into small packets, which are then relayed by Internet Protocol (IP) across the network.

Question 6

Question 6Assertion (A): Bus topology is based on a central node which acts as a hub.Reasoning (R): Bus topology installation involves low cost.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

A is false but R is true.ExplanationBus topology is a multi-point configuration where several devices are connected to a main long cable, usually a coaxial cable, which acts as a backbone. This topology is cost-effective to install compared to other network topologies due to the simplicity of its design. Because there is only one communication line (the bus) and no additional networking hardware like switches or hubs needed, the overall setup cost is lower.

Question 7

Question 7Assertion (A): Infrared (IR) is a wireless technology used for data communication.Reasoning (R): Infrared involves the usage of electromagnetic radiation whose wavelength is shorter than the visible light but can penetrate easily through walls and obstacles; thus, it is used where there is an obstacle between two devices under communication.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

A is true but R is false.ExplanationInfrared (IR) is a wireless technology used for data communication. Infrared involves the usage of electromagnetic radiation, specifically infrared light, to send data. The data is transmitted through the air and can propagate in open space; however, it cannot penetrate the walls of a room and is affected by distance, noise, and heat. It is an example of a short-range wireless network.

Question 8

Question 8Assertion (A): A protocol defines the set of rules that are applicable for data sharing and communication over a network.Reasoning (R): Local Area Network (LAN) is an example of protocol.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

A is true but R is false.ExplanationA protocol defines the set of rules and regulations applicable for data sharing and communication over a network. It is a formal description of message formats and the rules that devices must follow to exchange those messages. However, Local Area Network (LAN) is not an example of a protocol, rather, it is a type of computer network.

Question 9

Question 9Assertion (A): A Gateway is a network device that connects dissimilar networks.Reasoning (R): A Gateway establishes a connection between local network and external network.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationA Gateway is a network device that connects dissimilar networks. Gateway provides the necessary translation of data received from network into a format or protocol recognized by devices within the internal network establishing an intelligent connection between the two.

Question 10

Question 1Through internet, we can establish contact with anyone in the world.

Accepted Answer