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Topic: VRRP & GLBPSwitch
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3.0 IP Routing

VRRP & GLBP Practice Questions

Updated for CCNA v2.0

FHRP concepts, with protocol-specific mechanics labeled as extension practice.

CCNA v2.0 objective 3.4 · objective map

Author-reviewed by LabFabric · 7 September 2026 · Report a content issue

One solved question, so you can see how these are marked

Which statement correctly contrasts VRRP with HSRP?

VRRP: standard master/backup; HSRP: Cisco active/standby

VRRP is the IETF open standard and calls its roles master and backup. HSRP is Cisco proprietary and calls them active and standby. Both provide a shared virtual gateway IP for end hosts.

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Find related practice in the CCNA path
All 6 VRRP & GLBP questions in this set

Answers and explanations appear when you work through the set above.

  1. A network engineer configures VRRP on two routers and expects the higher priority router to take over when it returns from a reboot. No preempt command is entered. What happens?

    • The higher priority router does not take over, because preemption is disabled by default
    • The higher priority router takes over, because VRRP enables preemption by default
    • Both routers become master and the virtual IP is duplicated
    • VRRP refuses to start until preemption is explicitly configured

  2. What makes GLBP different from both HSRP and VRRP?

    • It provides a virtual IP, whereas HSRP and VRRP require hosts to address physical routers
    • Load balances hosts by assigning different virtual MACs
    • It is the only one that supports IPv6
    • Forwards every host's traffic without any gateway priority configuration

  3. Which virtual MAC address format does VRRP use?

    • 0000.0C07.ACxx (HSRP version 1)
    • 0000.5E00.01xx
    • 0007.B400.xxxx
    • 0100.5E00.0012

  4. In GLBP, what is the role of the Active Virtual Gateway (AVG)?

    • It forwards all traffic for the group by itself
    • Answers ARP for the virtual IP and allocates virtual MACs to forwarders
    • It monitors uplink interfaces and adjusts priorities automatically
    • It synchronizes the routing tables of all group members

  5. What host-gateway problem do FHRPs such as HSRP and VRRP solve?

    • A stable virtual gateway that survives a router failure
    • Because routers cannot run more than one routing protocol at a time
    • Because switches cannot forward frames between two routers
    • Because DHCP cannot supply a default gateway option

  6. An HSRP active router has a healthy LAN interface but its WAN uplink has failed, so traffic it receives is black-holed. Which feature resolves this?

    • Increase HSRP hello intervals to preserve the active router's role
    • Interface tracking reduces HSRP priority when the WAN uplink fails
    • Enabling HSRP version 2
    • Configuring a second virtual IP address