Describe the importance of fault tolerance and redundancy in WAN design. Explain how technologies like Multiprotocol Label Switching (MPLS) and Virtual Router Redundancy Protocol (VRRP) contribute to this.

Q: Explain the role of routers and switches in the data link layer of the OSI model.

A: Routers and switches are fundamental networking devices that operate within the Data Link Layer…

Q: Explain the concept of VLAN stacking (Q-in-Q) and its application in service provider networks.

A: A physical network may be logically divided into several virtual networks using a VLAN, or virtual…

Q: Describe the role of Network Address Translation (NAT) devices in the OSI model and their impact on…

A: Devices for Network Address Translation (NAT) play a crucial role at the Network Layer (Layer 3), as…

Q: e purpose of VLAN tagging and how it is implemented in Ethernet fra

A: The question seeks an explanation of the purpose of VLAN tagging and how it is implemented within…

Q: Describe the importance of redundancy and fault tolerance in WAN design.

A: Redundancy and fault tolerance are critical considerations in the design of Wide Area Networks…

Q: ACLs may be configured to allow or restrict traffic on a router based on five factors.

A: ACLs : ACLs are a set of permit-and-deny restrictions, or rules, that provide security by preventing…

Fundamentals of WAN

A collection of networks and/or local area networks (LAN) which communicate with each other is called a wide area network (WAN). A telecommunication network is extended over the geographical area for the basic computer network purpose (by connecting all smaller networks). From any part of the world, WAN allows communication and sharing the data between devices.