What is the primary purpose of link aggregation (EtherChannel/PortChannel) in a service provider network?

To provide redundancy and increase bandwidth by combining multiple physical links into one logical link

To encrypt traffic between two routers

To provide a single point of failure for the network

To detect failures in the forwarding path

A service provider is upgrading its core routers to support in-service software upgrades (ISSU). The network runs OSPF and BGP, and the operations team wants to minimize traffic loss during a planned supervisor switchover. The neighboring routers are older models that do not support any high-availability extensions. Which feature should the engineer implement to achieve the goal?

NSF with graceful restart enabled on both OSPF and BGP

Link aggregation between the core routers

What is the primary purpose of Non-Stop Forwarding (NSF) on a router with redundant route processors?

To enable the router to rebuild its routing table without any assistance from neighboring routers

To automatically fail over to a standby route processor without any packet loss

To allow the router to continue forwarding data packets while the route processor is restarting

To provide redundant power supplies for the router chassis

A network engineer is configuring a PortChannel between two switches. The engineer wants to ensure that traffic is distributed across all links in the channel. Which configuration parameter should be set?

Load-balancing method based on source and destination IP addresses

Graceful restart on the PortChannel interface

BFD on the PortChannel interface

NSF on the PortChannel interface

What is a primary advantage of NSR over NSF in a network with mixed-vendor routers?

NSR works even if neighboring routers do not support graceful restart or NSF

NSR is faster than NSF because it uses hardware-based forwarding

NSR requires less memory on the route processor

NSR eliminates the need for redundant route processors

CiscoCertified Network Professional Service Provider

Domain 2Objective 8

2.8 Implement High Availability 350-501 Practice Questions (Page 3)

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 22 practice questions to prepare you well beyond it. (estimate)

22questions here

5free pages

5concepts

30%of the exam

Questions 11–15

11foundation · easy
What is the primary purpose of link aggregation (EtherChannel/PortChannel) in a service provider network?
Select an answer first
12application · medium
A service provider is upgrading its core routers to support in-service software upgrades (ISSU). The network runs OSPF and BGP, and the operations team wants to minimize traffic loss during a planned supervisor switchover. The neighboring routers are older models that do not support any high-availability extensions. Which feature should the engineer implement to achieve the goal?
Select an answer first
13foundation · easy
What is the primary purpose of Non-Stop Forwarding (NSF) on a router with redundant route processors?
Select an answer first
14application · medium
A network engineer is configuring a PortChannel between two switches. The engineer wants to ensure that traffic is distributed across all links in the channel. Which configuration parameter should be set?
Select an answer first
15foundation · easy
What is a primary advantage of NSR over NSF in a network with mixed-vendor routers?
Select an answer first

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