Module 9 Pre-Assessment

A network administrator is analyzing the features that are supported by different first-hop router redundancy protocols. Which statement describes a feature that is associated with HSRP?

• HSRP uses active and standby routers.

• It uses ICMP messages in order to assign the default gateway to hosts.

• It allows load balancing between a group of redundant routers.

• HSRP is nonproprietary.

Answer explanation

The HSRP first-hop router redundancy protocol is Cisco proprietary and supports standby and active devices. VRRPv2 and VRRPv3 are nonproprietary. GLBP is Cisco proprietary and supports load balancing between a group of redundant routers.

Refer to the exhibit. What protocol can be configured on gateway routers R1 and R2 that will allow traffic from the internal LAN to be load balanced across the two gateways to the Internet?

• STP

• PVST

• PVST+

• GLBP

Answer explanation

GLBP, or Group Load Balancing Protocol, allows multiple routers to act as a single default gateway for hosts. GLBP load balances the traffic across the individual routers on a per host basis.

Refer to the exhibit. A network engineer is troubleshooting host connectivity on a LAN that uses a first hop redundancy protocol. Which IPv4 gateway address should be configured on the host?

• 192.168.2.0

• 192.168.2.1

• 192.168.2.2

• 192.168.2.100

Answer explanation

The host default gateway address should be the FHRP (in this case GLBP) virtual IP address.

Refer to the exhibit. Which destination MAC address is used when frames are sent from the workstation to the default gateway?

• MAC address of the forwarding router

• MAC addresses of both the forwarding and standby routers

• MAC address of the standby router

• MAC address of the virtual router

Answer explanation

The IP address of the virtual router acts as the default gateway for all the workstations. Therefore, the MAC address that is returned by the Address Resolution Protocol to the workstation will be the MAC address of the virtual router.

A Cisco proprietary FHRP that provides load sharing in addition to redundancy

• GLBP

• HSRP

• VRRP

• DHCP

Answer explanation

GLBP, A Cisco proprietary FHRP that provides load sharing in addition to redundancy. HSRP A Cisco proprietary FHRP that provides redundancy through use of an active device and standby device. VRRP, An open standard FHRP that provides redundancy through use of a virtual routers master and one or more backups. Distractor, A legacy open standard FHRP that allows IPv4 hosts to discover gateway routers.

A Cisco proprietary FHRP that provides redundancy through use of an active device and standby device.

• GLBP

• HSRP

• VRRP

• DHCP

Answer explanation

GLBP, A Cisco proprietary FHRP that provides load sharing in addition to redundancy. HSRP A Cisco proprietary FHRP that provides redundancy through use of an active device and standby device. VRRP, An open standard FHRP that provides redundancy through use of a virtual routers master and one or more backups. Distractor, A legacy open standard FHRP that allows IPv4 hosts to discover gateway routers.

An open standard FHRP that provides redundancy through use of a virtual routers master and one or more backups.

• GLBP

• HSRP

• VRRP

• DHCP

Answer explanation

GLBP, A Cisco proprietary FHRP that provides load sharing in addition to redundancy. HSRP A Cisco proprietary FHRP that provides redundancy through use of an active device and standby device. VRRP, An open standard FHRP that provides redundancy through use of a virtual routers master and one or more backups. Distractor, A legacy open standard FHRP that allows IPv4 hosts to discover gateway routers.

Which FHRP implementation is a nonproprietary IPv4-only election protocol with limited scalability?

• VRRPv2

• GLBP for IPv6

• GLBP

• IRDP

Which FHRP implementation is a Cisco-proprietary protocol that supports IPv6 load balancing?

• GLBP for IPv6

• GLBP

• VRRPv3

• IRDP

Which FHRP implementation is a Cisco-proprietary protocol that supports IPv4 load sharing?

• GLBP

• VRRPv3

• GLBP for IPv6

• VRRPv2