SP Network Infrastructure and Protocols

Question 1

Which protocol is used by service providers to dynamically exchange routing information between autonomous systems?

Accepted Answer

BGP

Answer

OSPF

Answer

EIGRP

Answer

RIP

Question 2

What technology do service providers use to forward packets based on labels rather than IP addresses?

Accepted Answer

MPLS

Answer

VLANs

Answer

NAT

Answer

DHCP

Question 3

In a service provider network, what is the role of a Provider Edge (PE) router?

Accepted Answer

Connects the provider network to customer sites via CE routers

Answer

Connects the provider's core routers to each other

Answer

Manages DNS records for customers

Answer

Acts as a firewall at the network perimeter

Question 4

What does QoS stand for and why is it critical in service provider networks?

Accepted Answer

Quality of Service — prioritizes traffic to meet performance SLAs

Answer

Quantity of Switches — counts active network devices

Answer

Queue of Sessions — tracks concurrent user sessions

Answer

Quality of Security — enforces firewall rules

Question 5

Which protocol automatically assigns IP addresses to devices in a service provider managed network?

Accepted Answer

DHCP

Answer

DNS

Answer

SNMP

Answer

RADIUS

Question 6

What is the purpose of Anycast routing used by large service providers?

Accepted Answer

Route traffic to the nearest or best-performing instance of a service

Answer

Send one packet to all hosts simultaneously

Answer

Encrypt routing table updates

Answer

Assign static IPs to all servers