Fundamentals of WANs and IP Routing Quiz

What is the primary difference between a leased line and a circuit-switched WAN?

• Leased lines are packet-switched

• Circuit-switched WANs provide permanent physical circuits

• Leased lines provide constant availability

• Circuit-switched WANs are always-on

What layer of the OSI model does Frame Relay operate at?

• Physical

• Data Link

• Network

• Transport

Which protocol is commonly used to provide dynamic addressing for WAN interfaces?

• RIP

• DHCP

• PPP

• OSPF

What is the purpose of split-horizon in distance-vector routing protocols?

• Prevent routing loops

• Increase convergence speed

• Reduce packet size

• Balance the load

What does the term 'autonomous system' refer to in routing?

• Group of VLANs

• Logical router domain

• Group of networks under common administration

• Routing domain without NAT

What type of route is manually configured by a network administrator?

• Static route

• Default route

• Dynamic route

• Summary route

What is the main benefit of link-state routing protocols over distance-vector?

• Faster hop calculation

• Lower CPU usage

• Faster convergence

• Easier configuration

Which WAN technology uses permanent virtual circuits?

• ISDN

• ATM

• MPLS

• Frame Relay

What is a key feature of PPP over HDLC?

• Compression

• Error detection

• Authentication options

• Packet ordering

Which IP address class allows for the most hosts on a single network?

• Class A

• Class B

• Class C

• Class D