Ccna certification Practice Tests

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 226.  D.  You can create up to 256 HSRP groups on a router. This would include group 0 to 255 

for a total of 256 groups. All other answers are incorrect.

 227.  B.  HSRP routers communicate with each other on port 1985 using UDP. All other 

answers are incorrect.

 228.  B.  Only one router can be active at a time in an HSRP group. All other routers are 

standby routers, until the active router fails. The virtual router does not send hello packets 

to the HSRP group; each HSRP member sends its own hello packets. HSRP does not allow 

for per-packet load balancing; GLBP can load balance on a per-packet basis.

 229.  C.  HSRP uses multicasting to communicate among HSRP group members. For HSRPv1, 

the address is 224.0.0.2, and for HSRPv2, the address is 224.0.0.102. Unicast is an 

incorrect answer, although most of the communication flowing through HSRP is unicast 

traffic. Broadcasts are dropped by routers, and HSRP is not different in this respect.  

Layer 2 flooding is a technique used by switches to discover hosts, and it is not used by 

HSRP.

 230.  A.  The virtual router is responsible for host communications such as an ARP request for 

the host’s default gateway. Technically, this is served by the active router since it is hosting 

the virtual router. However, it is the virtual router’s IP address and MAC address that are 

used for outgoing packets. The standby router will not respond unless the active router is 

down; then the standby will become the active router. A monitor router is a router that is 

not participating in HSRP.

 231.  C.  The hold timer must expire for the standby router to become an active router. The 

hold timer is three times the hello timer, so three hello packets must be missed before the 

standby becomes active. The hello timer sets the time between hello packets outgoing to 

all other HSRP members. The standby timer is a timer on the standby router that expires 

in sync with the hello timer. There is no such timer as the virtual timer; therefore, this is a 

wrong answer.

 232.  D.  Gateway Load Balancing Protocol (GLBP) use the port number 3222 and the protocol 

UDP for router communications. All other answers are incorrect.

 233.  D.  Hot Standby Router Protocol version 2 (HSRPv2) allows for timers to be configured 

in milliseconds in lieu of seconds. This allows for quicker failover between active and 

standby routers. Both HSRPv1 and HSRPv2 use hello packets to maintain a health state 

among other HSRP members. HSRPv1 and HSRPv2 both use multicasts for management 

and hello packets. HSRPv1 does not support IPv6; only HSRPv2 supports IPv6.

 234.  C.  The active virtual gateway (AVG) is responsible for responding to ARP requests 

from hosts. The AVG will reply with the MAC address of any one of the active virtual 

forwarders (AVFs). The active router is a concept used with Virtual Router Redundancy 

Protocol (VRRP) or Hot Standby Router Protocol (HSRP), and it does not apply to 

Gateway Load Balancing Protocol (GLBP). The active virtual gateway will respond with 

the MAC address of the next active virtual forwarder or router that is available. The 

virtual router is not responsible for tracking requests; the AVG is responsible.

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