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What problem is HSRP designed to solve?

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What problem is HSRP designed to solve?

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Answer choices

Why each option matters

Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.

A

Distractor review

Layer 2 switching loops

Loop prevention is handled by spanning tree.

B

Best answer

Loss of the default gateway if one router fails

Correct. HSRP provides first-hop redundancy.

C

Distractor review

Duplicate MAC addresses on trunks

HSRP does not manage trunk duplicate MAC issues.

D

Distractor review

Wireless interference

Wireless interference is unrelated.

Common exam trap

Common exam trap: answer the scenario, not the keyword

A common exam trap is selecting options related to Layer 2 switching loops or wireless interference, which are unrelated to HSRP's function. For example, confusing HSRP with Spanning Tree Protocol (STP) leads to the mistaken belief that HSRP prevents switching loops, but STP handles loop prevention at Layer 2. Similarly, wireless interference is a physical and radio frequency issue, not solved by HSRP. Another trap is misunderstanding HSRP as a solution for duplicate MAC addresses on trunks, which is unrelated. The key is to recognize that HSRP specifically addresses the problem of default gateway availability when a router fails, ensuring continuous IP connectivity at Layer 3.

Technical deep dive

How to think about this question

HSRP (Hot Standby Router Protocol) is a Cisco proprietary first-hop redundancy protocol designed to increase network availability by providing a virtual default gateway IP address shared among a group of routers. Hosts on a LAN configure their default gateway as this virtual IP, which is always available even if the primary router fails. This prevents traffic disruption caused by a single router failure at the first-hop routing point. HSRP elects an active router responsible for forwarding traffic sent to the virtual IP, while other routers remain in standby mode ready to take over if the active router fails. This election is based on priority values and interface states. The protocol uses hello messages to monitor router status and quickly switch roles to maintain uninterrupted gateway availability. This mechanism ensures seamless failover without requiring host reconfiguration. A common exam trap is confusing HSRP with protocols that handle Layer 2 issues or wireless problems. HSRP operates at Layer 3 to provide gateway redundancy, not to prevent switching loops or manage wireless interference. Practically, HSRP is critical in enterprise networks to maintain continuous default gateway access, avoiding traffic blackholing when a router goes down, which is essential for reliable IP connectivity.

KKey Concepts to Remember

  • HSRP provides a virtual IP address that multiple routers share to offer a redundant default gateway for hosts on a LAN.
  • HSRP elects an active router to forward traffic and standby routers to take over if the active router fails, ensuring gateway availability.
  • Routers in an HSRP group exchange hello messages to monitor each other's status and trigger failover when necessary.
  • HSRP operates at Layer 3 and does not prevent Layer 2 switching loops, which are managed by Spanning Tree Protocol (STP).
  • Hosts configure their default gateway as the HSRP virtual IP, allowing seamless failover without changing host settings.
  • HSRP priority values determine which router becomes active, with higher priority preferred in the election process.
  • HSRP improves network resilience by preventing loss of connectivity due to a single router failure at the default gateway level.
  • HSRP is a Cisco proprietary protocol and is commonly tested in CCNA for understanding first-hop redundancy concepts.

TExam Day Tips

  • Watch for words such as best, first, most likely and least administrative effort.
  • Review why wrong options are wrong, not only why the correct option is correct.

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More questions from this exam

Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.

Question 1

A router learns the same prefix from both OSPF and EIGRP. Which route is installed by default?

Question 2

A router shows this output: R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 10.1.1.2 1 FULL/DR 00:00:34 192.168.12.2 GigabitEthernet0/0 10.1.1.3 1 2WAY/DROTHER 00:00:39 192.168.12.3 GigabitEthernet0/0 Which statement is correct?

Question 3

What is the OSPF metric called?

Question 4

A non-root switch has two uplinks toward the root bridge. One path has a lower total STP cost than the other. What role will the lower-cost uplink have?

Question 5

A router interface applies this ACL inbound: 10 deny tcp any any eq 80 20 permit ip any any A user reports that web browsing to a server by IP address fails, but ping works. Which statement best explains the behavior?

Question 6

A router learns route 198.51.100.0/24 from OSPF with AD 110 and also has a static route to the same prefix configured with AD 150. Which route is installed?

FAQ

Questions learners often ask

What does this 200-301 question test?

HSRP provides a virtual IP address that multiple routers share to offer a redundant default gateway for hosts on a LAN.

What is the correct answer to this question?

The correct answer is: Loss of the default gateway if one router fails — HSRP provides a virtual default gateway so hosts continue forwarding traffic even if one physical gateway router fails.

What should I do if I get this 200-301 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.

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