Answer: Option B. -> Star 
Star topology is a network topology in which all devices are connected to a central hub or switch. The central hub or switch acts as a mediator, allowing each device to communicate with other devices on the network. The star topology is widely used in modern computer networks due to its advantages in terms of reliability, scalability, and ease of maintenance.
In large networks, where the number of devices is high and the network traffic is substantial, star topology is preferred over other topologies. This is because of the following reasons:
Scalability: In star topology, adding new devices to the network is easy, and it does not affect the rest of the network. This makes it easy to scale the network as per the requirements.
Reliability: In a star topology, if one device fails, it does not affect the rest of the network. Each device is connected to the central hub or switch, and the failure of one device does not affect the communication of other devices on the network.
Maintenance: Maintenance of a star topology network is relatively easy. Each device can be easily removed, added, or replaced without affecting the rest of the network. It is easy to diagnose problems, and faults can be quickly identified and fixed.
Performance: In star topology, the data transfer rate is high because each device has a dedicated link to the central hub or switch, which eliminates the possibility of collisions.
On the other hand, other topologies such as mesh, ring, and bus are not suitable for large networks. Mesh topology requires a lot of cabling, and the complexity increases with the number of devices on the network. Ring topology can suffer from data collisions and transmission errors, and adding new devices is difficult. Bus topology is not scalable, and adding new devices reduces the network performance.
In conclusion, the star topology is the best choice for large networks due to its scalability, reliability, maintenance, and performance advantages.

Answer: Option A. -> Bus topology

Answer: Option E. -> None of the above
A Wide Area Network (WAN) is a network that covers a large geographical area, such as a city, country, or even the world. WANs connect smaller networks, such as Local Area Networks (LANs) and Metropolitan Area Networks (MANs), over long distances.
WANs can be used by organizations to provide connectivity between their geographically dispersed offices or to provide internet connectivity to their employees. WANs can also be used by internet service providers to provide connectivity to their customers.
While WANs may require some amount of bandwidth and processing power, it is not necessary that they always require high bandwidth communication source link or high-speed processors. The requirements for a WAN depend on the specific needs of the organization and the applications that it needs to run.
Some factors that can influence the requirements for a WAN include:

• The number of users who will be accessing the network
• The types of applications that will be running on the network
• The amount of data that will be transferred over the network
• The distance between the locations that need to be connected

In general, WANs may require some of the following:

• Adequate bandwidth to support the applications that will be running on the network
• Reliable connectivity to ensure that the network is always available
• Security features to protect the data being transferred over the network
• Quality of Service (QoS) features to ensure that the network can prioritize certain types of traffic over others

Therefore, the correct answer is Option E: None of the above, as WANs do not always require high bandwidth communication source link or high-speed processors. The requirements for a WAN depend on the specific needs of the organization and the applications that it needs to run.

Answer: Option C. -> Ring

Broadcast topologies are computer network topologies in which every node on the network receives all data sent from other nodes on the network. The three most common broadcast topologies are Star, Bus, and Ring.

A. Star:
In a Star topology, all nodes are connected to a single hub or switch. All data sent to the hub is broadcast to all nodes connected to it, allowing all nodes to receive the data. This is the most common type of broadcast topology.

B. Bus:
In a Bus topology, all nodes are connected to a single linear bus. Data sent to the bus is broadcast to all nodes connected to it. This is an older type of broadcast topology and is not as commonly used as the Star topology.

C. Ring:
In a Ring topology, all nodes are connected in a circular loop. Data sent from one node is passed around the loop, with each node receiving the data before it is sent to the next node. This is not a broadcast topology as each node only receives the data once, not multiple times like in the Star and Bus topologies.

Therefore, the correct answer is Option C - Ring.

If you think the solution is wrong then please provide your own solution below in the comments section .

Answer: Option D. -> E-business

Answer: Option B. -> With Wide Web

Answer: Option C. -> modem

Answer: Option D. -> tele-conferencing

Answer: Option B. -> Netscape

Answer: Option A. -> e-mail