An IS-IS network uses wide metrics. A router in Level 1 area 49.0001 receives an LSP from a Level 1/Level 2 border router that advertises a route to a prefix in area 49.0002 with a metric of 100. The Level 1 router also has a default route from the same border router with a metric of 50. What is the effective metric for the Level 1 router to reach the prefix in area 49.0002?

The route is not reachable because Level 1 routers cannot reach other areas.

100, because the specific route is preferred over the default route.

50, because the default route is used for inter-area destinations.

150, because the metrics are additive.

A service provider is migrating from a single-topology IS-IS network to multitopology IS-IS to support IPv6 on a subset of links. The network currently uses narrow metrics. The engineer enables multitopology IS-IS on all routers. Which additional configuration is required to ensure that IPv6 routes are advertised correctly?

Assign a different system ID for the IPv6 topology.

Enable the IPv6 address family only on routers that have IPv6 links.

Set the overload bit on routers without IPv6 connectivity.

Configure wide metrics on all interfaces.

In single-topology IS-IS, how are IPv4 and IPv6 routes handled?

IPv4 uses Level 1 and IPv6 uses Level 2, keeping them separate

They share the same SPF tree and topology, so all interfaces must support both address families

IPv6 routes are redistributed from IPv4 routes using NAT

They use separate SPF computations and independent link-state databases

A service provider has a multi-area IS-IS network. Area 1 has a router that is Level 1-only, and it needs to reach a prefix in Area 2. The nearest Level 1/Level 2 router is advertising a default route into Area 1. However, the Level 1 router is not installing the default route. What is the most likely cause?

The Level 1/Level 2 router is not configured with a default route.

The Level 1 router is not configured for wide metrics.

The Level 1 router is not configured with a default route.

The default route is being filtered by a distribute-list on the Level 1 router.

CiscoCertified Network Professional Service Provider

Domain 2Objective 1

2.1 Implement IS-IS (IPv4 and IPv6) 350-501 Practice Questions (Page 4)

Part of the Networking domain, which accounts for 30% of the 350-501 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~15–24 in this domain), expect 2–3 from this objective — we provide 29 practice questions to prepare you well beyond it. (estimate)

29questions here

6free pages

7concepts

30%of the exam

Questions 16–20

16application · medium
An IS-IS network uses wide metrics. A router in Level 1 area 49.0001 receives an LSP from a Level 1/Level 2 border router that advertises a route to a prefix in area 49.0002 with a metric of 100. The Level 1 router also has a default route from the same border router with a metric of 50. What is the effective metric for the Level 1 router to reach the prefix in area 49.0002?
Select an answer first
17application · medium
A service provider is migrating from a single-topology IS-IS network to multitopology IS-IS to support IPv6 on a subset of links. The network currently uses narrow metrics. The engineer enables multitopology IS-IS on all routers. Which additional configuration is required to ensure that IPv6 routes are advertised correctly?
Select an answer first
18foundation · easy
In single-topology IS-IS, how are IPv4 and IPv6 routes handled?
Select an answer first
19expert · hard
A service provider has a multi-area IS-IS network. Area 1 has a router that is Level 1-only, and it needs to reach a prefix in Area 2. The nearest Level 1/Level 2 router is advertising a default route into Area 1. However, the Level 1 router is not installing the default route. What is the most likely cause?
Select an answer first
20foundation · easy
What is the correct structure of an IS-IS Network Entity Title (NET)?
Select an answer first

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2.1 Implement IS-IS (IPv4 and IPv6) 350-501 Practice Questions (Page 4)

Questions 16–20

In single-topology IS-IS, how are IPv4 and IPv6 routes handled?

What is the correct structure of an IS-IS Network Entity Title (NET)?

Keep studying — Networking