200-301 Question 350
Single answerA network administrator is configuring redundancy for the default gateway in a network. They want to ensure that if the primary router fails, a secondary router will automatically take over without manual intervention. Which First Hop Redundancy Protocol (FHRP) is most suitable for achieving this?
- A
Hot Standby Router Protocol (HSRP)
- B
Virtual Router Redundancy Protocol (VRRP)
- C
Gateway Load Balancing Protocol (GLBP)
- D
Spanning Tree Protocol (STP)
Show answer and explanation
Correct answer: A
Explanation
First Hop Redundancy Protocols (FHRPs) like HSRP are designed to provide gateway redundancy, ensuring continuous network availability. In this scenario, the administrator is working in a Cisco environment and does not require load balancing or open standard protocols. Therefore, HSRP is the most suitable option.
- A. Correct.
HSRP is a Cisco-proprietary FHRP designed to provide gateway redundancy. It ensures that a backup router automatically takes over if the active router fails, making it suitable for this scenario.
- B. Incorrect.
VRRP is an open standard FHRP that provides redundancy but is not Cisco-proprietary. While it can achieve similar results, the scenario does not specify the use of open standards, making HSRP more appropriate in a Cisco environment.
- C. Incorrect.
GLBP is another Cisco-proprietary protocol that provides redundancy and load balancing. While it offers redundancy, it adds load balancing capabilities, which are not specified in the scenario.
- D. Incorrect.
STP is not an FHRP. It is used for preventing loops in Layer 2 networks and does not provide gateway redundancy, making it irrelevant to the scenario.