CompTIA Network+ Certification Exam N10-009 Practice Test 10

The term "Dual-stack IP" refers to a solution that relies on implementing both IPv4 and IPv6 protocols on network devices to facilitate seamless migration from IPv4 to IPv6.

• True

• False

Answer explanation

True. Dual-stack IP allows devices to run both IPv4 and IPv6, enabling a smooth transition from IPv4 to IPv6, which is essential as the internet evolves.

Which of the following answers refers to a technique that allows IPv6-only devices to communicate with IPv4-only servers?

• SLAAC

• 6to4

• NAT64

• ISATAP

Answer explanation

NAT64 is the correct choice as it enables IPv6-only devices to communicate with IPv4-only servers by translating IPv6 addresses to IPv4 addresses, facilitating interoperability between the two protocols.

An Autonomous System (AS)...

Answer explanation

An Autonomous System (AS) is a collection of IP networks and routers under the control of a single organization. The statement is true, but the answer choice indicates '0', which suggests it is incorrect.

In the context of routing protocols, the term "Convergence"...

• True

• False

Answer explanation

In routing protocols, 'Convergence' refers to the process where all routers in a network agree on the network topology after a change. Thus, the statement is True.

Which of the answers listed below does not describe the characteristics of a distance-vector protocol?

• Routes are determined based on the shortest distance, typically measured in hops

• Simple setup, slower convergence time

• Routers periodically share their routing tables with immediate neighbors to maintain up-to-date route information

• Each router maintains a complete map of the network topology

Answer explanation

Distance-vector protocols do not maintain a complete map of the network topology; instead, they share routing tables with neighbors. The correct choice highlights this key difference.

Which of the following answers refer link-state routing protocols?

• Routers periodically share their routing tables with immediate neighbors to maintain up-to-date route information

• Each router maintains a complete map of the network topology

• Routers send updates only when there are network changes, reducing unnecessary traffic

• Converge quickly after network changes, improving reliability in larger networks

• Routes are determined based on the shortest distance, typically measured in hops

Answer explanation

Link-state routing protocols maintain a complete map of the network topology, send updates only on changes, and converge quickly, enhancing reliability. The other options describe distance-vector protocols.

Which of the answers listed below describe the features of path-vector routing protocols?

• Combines distance-vector and link-state features

• Used for inter-domain routing between ASs, such as in the Internet

• Routers store and share the full path (sequence of ASs) to each destination, rather than simple distance metrics

• Primarily used for intra-domain routing within a single AS

• Routes are determined based on the shortest distance, typically measured in hops

Answer explanation

Path-vector routing protocols are used for inter-domain routing between ASs, like in the Internet. They store and share the full path of ASs to each destination, unlike distance metrics used in other protocols.

The most characteristic feature of hybrid routing protocols...

• True

• False

Answer explanation

The most characteristic feature of hybrid routing protocols is their ability to combine the advantages of both distance-vector and link-state protocols, making the statement true.

Which of the following is an example of a distance-vector routing protocol?

• EIGRP

• BGP

• OSPF

• RIP

• IS-IS

Answer explanation

RIP (Routing Information Protocol) is a classic distance-vector routing protocol that uses hop count as its metric. In contrast, EIGRP and OSPF are hybrid and link-state protocols, respectively, while BGP and IS-IS are also not distance-vector.

Which of the answers listed below refer to link-state routing protocols?

• A) OSPF

• B) BGP

• C) IS-IS

• D) RIP

• E) EIGRP

Answer explanation

OSPF and IS-IS are link-state routing protocols that maintain a complete map of the network topology. BGP is a path-vector protocol, RIP is a distance-vector protocol, and EIGRP is a hybrid protocol.