You want to implement a high availability network using two Cisco routers. You also want to
ensure that the stat of the WAN interfaces can be tracked in doing so. Which router
redundancy protocol cannot be configured for interface tracking?

A.
GLBP

B.
HSRP

C.
RPR

D.
VRRP

E.
SLB

F.
RPR+

G.
None of the other alternatives apply

Explanation:
The Virtual Router Redundancy Protocol (VRRP) is a standards-based alternative to HSRP,
defined in IETF standard RFC 2338. VRRP is so similar to HSRP that you need to learn only
slightly different terminology and a couple of slight functional differences.
VRRP provides one redundant gateway address from a group of routers. The active router is
called the master router, while all others are in the backup state. The master router is the
one with the highest router priority in the VRRP group.
VRRP group numbers range from 0 to 255; router priorities range from 1 to 254 (254 is the
highest; 100 is the default).
The virtual router MAC address is of the form 0000.5e00.01xx, where xx is a two-digit hex
VRRP group number.
VRRP advertisements are sent at 1-second intervals. Backup routers can optionally learn
the advertisement interval from the master router.
By default, all VRRP routers are configured to preempt the current master router, if their
priorities are greater.
VRRP has no mechanism for tracking interfaces to allow more capable routers to take over
the master role.