Answer: Option E
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.