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CISA · Question #454

An organization has alternative links in its wide area network (WAN) to provide redundancy. However, each time there is a problem with a link, network administrators have to update the configuration t

The correct answer is C. Configure a non-proprietary routing protocol. Deploying a standards-based dynamic routing protocol (for example, OSPF) lets routers automatically discover and advertise link status. When one WAN link fails, the routing tables converge and traffic is rerouted over the backup path without manual intervention, providing seamles

Submitted by yuriko_h· Apr 18, 2026Information Systems Operations and Business Resilience

Question

An organization has alternative links in its wide area network (WAN) to provide redundancy. However, each time there is a problem with a link, network administrators have to update the configuration to divert traffic to the other link. Which of the following would be an IS auditor’s BEST recommendation?

Options

  • AReduce the number of alternative links
  • BImplement a load-balancing mechanism
  • CConfigure a non-proprietary routing protocol
  • DImplement an exterior routing protocol

How the community answered

(62 responses)
  • A
    8% (5)
  • B
    5% (3)
  • C
    71% (44)
  • D
    16% (10)

Explanation

Deploying a standards-based dynamic routing protocol (for example, OSPF) lets routers automatically discover and advertise link status. When one WAN link fails, the routing tables converge and traffic is rerouted over the backup path without manual intervention, providing seamless redundancy.

Topics

#WAN Redundancy#Routing Protocols#Automatic Failover#Network Resilience

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