2118779
| Question | Answer |
| Which one of these is a valid HSRP Virtual Mac Address? A. 0000.0C07.AC01 B. 0000.5E00.0110 C. 0007.B400.1203 D. 0000.C007.0201 | Answer: A Explanation With HSRP, two or more devices support a virtual router with a fictitious MAC address and unique IP address. There are two version of HSRP. + With HSRP version 1, the virtual router’s MAC address is 0000.0c07.ACxx , in which xx is the HSRP group. + With HSRP version 2, the virtual MAC address if 0000.0C9F.Fxxx, in which xxx is the HSRP group. Note: Another case is HSRP for IPv6, in which the MAC address range from 0005.73A0.0000 through 0005.73A0.0FFF. -> A is correct. |
| Which statement describes VRRP object tracking? A. It monitors traffic flow and link utilization. B. It ensures the best VRRP router is the virtual router master for the group. C. It causes traffic to dynamically move to higher bandwidth links D. It thwarts man-in-the-middle attacks. | Answer: B Explanation Object tracking is the process of tracking the state of a configured object and uses that state to determine the priority of the VRRP router in a VRRP group -> B is correct. (Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/unicast/configuration/guide/l3_cli_nxos/l3_vrrp.html#wp1074871) Note: Unlike HSRP which can track interface status directly, VRRP can only track interface status through a tracked object. |
| Which three statements about HSRP operation are true? (Choose three) A. The virtual IP address and virtual MAC address are active on the HSRP Master router. B. The HSRP default timers are a 3 second hello interval and a 10 second dead interval. C. HSRP supports only clear-text authentication. D. The HSRP virtual IP address must be on a different subnet than the routers’ interfaces on the same LAN. E. The HSRP virtual IP address must be the same as one of the router’s interface addresses on the LAN. F. HSRP supports up to 255 groups per interface, enabling an administrative form of load balancing. | Answer: A B F Explanation The virtual MAC address of HSRP version 1 is 0000.0C07.ACxx, where xx is the HSRP group number in hexadecimal based on the respective interface. For example, HSRP group 10 uses the HSRP virtual MAC address of 0000.0C07.AC0A. HSRP version 2 uses a virtual MAC address of 0000.0C9F.FXXX (XXX: HSRP group in hexadecimal) |
0 comments
Want to create your own Flashcards for free with GoConqr? Learn more.