CRT 9.3 Module Quiz - FHRP Concepts

A network engineer is configuring a LAN with a redundant first hop to make better use of the available network resources. Which protocol should the engineer implement? - VRRP - GLBP - FHRP - HSRP

- GLBP Topic 9.1.0 - Gateway Load Balancing Protocol (GLBP) provides load sharing between a group of redundant routers while also protecting data traffic from a failed router or circuit.

A user needs to add redundancy to the routers in a company. What are the three options the user can use? (Choose three.) - GLBP - RAID - HSRP - VRRP - STP - IPFIX

- GLBP - HSRP - VRRP Topic 9.1.0 - Three protocols that provide default gateway redundancy include VRRP, GLBP, and HSRP.

A network administrator is analyzing the features that are supported by different first-hop router redundancy protocols. Which statement is a feature that is associated with GLBP? - GLBP allows load balancing between routers. - It is nonproprietary. - It works together with VRRP. - It uses a virtual router master.

- GLBP allows load balancing between routers. Topic 9.1.0 - The GLBP first-hop router redundancy protocol is Ciscoproprietary and supports load balancing between a group of redundant routers. VRRPv2 and VRRPv3 are nonproprietary protocols and use a virtual router master.

A network administrator is overseeing the implementation of first hop redundancy protocols. Which two protocols are Cisco proprietary? (Choose two.) - VRRPv2 - HSRP - VRRP - GLBP - IRDP

- HSRP - GLBP Topic 9.1.0 - The first hop redundancy protocols HSRP and GLBP are Cisco proprietary and will not function in a multivendor environment.

What is a potential disadvantage when implementing HSRP as compared to GLBP? - HSRP does not function in a multivendor environment. - HSRP does not provide load balancing with multiple active routers. - HSRP provides default gateway failover only when the active router fails. - HSRP does not have the capability to support IPv6 addresses.

- HSRP does not provide load balancing with multiple active routers. Topic 9.1.0 - HSRP is a first-hop redundancy protocol that can utilize a group of routers, where a single router is acting as the default gateway and all other HSRP routers will maintain a backup status. GLBP supports load balancing, where multiple active routers can share the traffic load at a single time. Both HSRP and GLBP are Cisco proprietary. HSRP provides default gateway failover when pre-set conditions are met or when the active router fails, and HSRP can support IPv6 addressing.

What is the purpose of HSRP? - It provides a continuous network connection when a router fails. - It prevents a rogue switch from becoming the STP root. - It prevents malicious hosts from connecting to trunk ports. - It enables an access port to immediately transition to the forwarding state.

- It provides a continuous network connection when a router fails. Topic 9.2.0 - HSRP is a first hop redundancy protocol and allows hosts to use multiple gateways through the use of a single virtual router.

Which statement describes a characteristic of GLBP? - It does not provide support for IPv6.​ - It provides load balancing for a maximum of four gateways. - It provides multiple virtual IP addresses and multiple virtual MAC addresses. - It provides automatic rerouting if any router in the group fails.

- It provides automatic rerouting if any router in the group fails. Topic 9.1.0 - GLBP provides support for IPv6. It provides one virtual IP address and multiple virtual MAC addresses, and there is no such limit of four gateways to provide load balancing.

A network administrator is analyzing first-hop router redundancy protocols. What is a characteristic of VRRPv3? - VRRPv3 is Cisco proprietary. - It works together with HSRP. - It supports IPv6 and IPv4 addressing. - It allows load balancing between routers.

- It supports IPv6 and IPv4 addressing. Topic 9.1.0 - VRRPv3 is a non-proprietary, first-hop router redundancy protocol. It provides features for both IPv4 and IPv6 addressing. HSRP and GLBP are both Cisco-proprietary protocols. GLBP provides load balancing between a group of redundant routers.

When first hop redundancy protocols are used, which two items will be shared by a set of routers that are presenting the illusion of being a single router? (Choose two.) - hostname - MAC address - static route - IP address - BID

- MAC address - IP address Topic 9.1.0 - In order for a set of routers to present the illusion of being a single router, they must share both an IP address and MAC address. A static route, BID, or hostname does not have to be shared in this context.

Which two protocols provide gateway redundancy at Layer 3? (Choose two.) - VRRP - PVST - STP - RSTP - HSRP

- VRRP - HSRP Topic 9.1.0 - HSRP (Hot Standby Routing Protocol) and VRRP (Virtual Router Redundancy Protocol) are both Layer 3 redundancy protocols. Both protocols allow multiple physical routers to act as a single virtual gateway router for hosts.

Which nonproprietary protocol provides router redundancy for a group of routers which support IPv4 LANs? - GLBP - SLB - VRRPv2 - HSRP

- VRRPv2 Topic 9.1.0 - The only nonproprietary FHRP used for router redundancy listed in the options is VRRPv2. HSRP and GLBP are both Cisco proprietary FHRPs. IOS SLB is a Cisco-based solution used to load balance traffic across multiple servers.

In FHRP terminology, what represents a set of routers that present the illusion of a single router to hosts? - default gateway - forwarding router - virtual router - standby router

- virtual router Topic 9.1.0 - In FHRP multiple routers are configured to work together to present to hosts a single gateway router. This single gateway router is a virtual router which has a virtual IP address that is used by hosts as a default gateway.