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Q381. What is the destination multicast MAC address for BPDUs on the native VLAN, for a switch that is running 802.1D?
A. 0185. C400. 0000
B. 0100.0CCC.CCCC
C. 0100.0CCC.CCCD
D. 0180.C200.0000
Answer: D
Explanation:
If the native vlan is 1:
A STP BPDU for VLAN 1 will be sent untagged to MAC 0180.c200.0000 (this is the
common spanning tree)
A PVST+ BPDU for VLAN 1 will be sent untagged to MAC 0100.0ccc.cccd
A PVST+ BPDU for all other vlans will be sent with a 802.1Q tag to MAC 0100.0ccc.cccd
(with a PVID = to the VLAN)
If the native vlan is not 1:
A STP BPDU for VLAN 1 will be sent untagged (on the native vlan) to MAC
0180.c200.0000 (this is the common spanning tree)
A PVST+ BPDU for VLAN1 will be sent with a 802.1Q tag to MAC 0100.0ccc.cccd (with a PVID=1)
A PVST+ BPDU for the native vlan will be sent untagged to MAC 0100.0ccc.cccd (with a PVID=native vlan)
A PVST+ BPDU for all other vlans will be sent with a 802.1Q tag to MAC 0100.0ccc.cccd (with a PVID = to the VLAN)
Q382. Which three benefits does the Cisco Easy Virtual Network provide to an enterprise network?
(Choose three.)
A. simplified Layer 3 network virtualization
B. improved shared services support
C. enhanced management, troubleshooting, and usability
D. reduced configuration and deployment time for dot1q trunking
E. increased network performance and throughput
F. decreased BGP neighbor configurations
Answer: A,B,C
Q383. Which protocol will accept incoming updates when the passive-interface command is configured?
A. OSPF
B. IS-IS
C. RIP
D. EIGRP
Answer: C
Q384. Which two statements are true about AAA? (Choose two.)
A. AAA can use RADIUS, TACACS+, or Windows AD to authenticate users.
B. If RADIUS is the only method configured in AAA, and the server becomes unreachable,
the user will be able to log in to the router using a local username and password.
C. If the local keyword is not included and the AAA server does not respond, then authorization will never be possible and the connection will fail.
D. AAA can be used to authenticate the enable password with a AAA server.
Answer: C,D
Explanation:
AAA can be used to authenticate user login and the enable passwords.
Example 1: Same Exec Authentication Methods for All Users
Once authenticated with:
aaa authentication login default group radius local
All users who want to log in to the access server have to be authorized using Radius (first method) or local database (second method).
We configure:
aaa authorization exec default group radius local
Note. On the AAA server, Service-Type=1 (login) must be selected.
Note. With this example, if the local keyword is not included and the AAA server does not respond, then authorization will never be possible and the connection will fail.
Reference: http://www.cisco.com/c/en/us/support/docs/security-vpn/terminal-access-controller-access-control-system-tacacs-/10384-security.html
Q385. What is the range of addresses that is used for IPv4-mapped IPv6 addresses?
A. 2001. db9. . /32
B. 2001. db8. . /32
C. 2002. . /16
D. . . ffff. /16
E. . . ffff. 0. 0/96
Answer: E
Explanation:
IPv4-Mapped Addresses FFFF:0:0/96 are the IPv4-mapped addresses [RFC4291]. Addresses within this block should not appear on the public Internet.
Reference: https://tools.ietf.org/html/rfc5156
Q386. Which two statements about BGP best-path selection are true? (Choose two.)
A. The route with the highest local preference is preferred.
B. The weight attribute is advertised to peers.
C. The route with the lowest MED is preferred.
D. A route that originates from iBGP peers is preferred.
E. A route that originates from a router with a higher BGP router ID is preferred.
F. The lowest weight advertised is preferred.
Answer: A,C
Q387. Refer to the exhibit.
Which AS paths are matched by this access list?
A. the origin AS 64496 only
B. the origin AS 64496 and any ASs after AS 64496
C. the directly attached AS 64496 and any ASs directly attached to AS 64496
D. the directly attached AS 64496 and any longer AS paths
Answer: C
Explanation:
If you want AS 1 to get networks originated from AS 4 and all directly attached ASs of AS 4, apply the following inbound filter on Router 1. ip as-path access-list 1 permit ^4_[0-9]*$ router bgp 1 neighbor 4.4.4.4 remote-as 4 neighbor 4.4.4.4 route-map foo in route-map foo permit 10 match as-path 1 In the ip as-path access-list command, the carat (^) starts the input string and designates "AS". The underscore (_) means there is a a null string in the string that follows "AS 4". The [0-9]* specifies that any connected AS with a valid AS number can pass the filter. The advantage of using the [0-9]* syntax is that it gives you the flexibility to add any number of ASs without modifying this command string.
Reference: http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/13754-26.html
Q388. Which term describes an EIGRP route that has feasible successors?
A. active
B. passive
C. redistributed
D. invalid
Answer: B
Explanation:
A topology table entry for a destination can have one of two states. A route is considered in the Passive state when a router is not performing a route recomputation. The route is in Active state when a router is undergoing a route recomputation. If there are always feasible successors, a route never has to go into Active state and avoids a route recomputation.
When there are no feasible successors, a route goes into Active state and a route recomputation occurs. A route recomputation commences with a router sending a query packet to all neighbors. Neighboring routers can either reply if they have feasible successors for the destination or optionally return a query indicating that they are performing a route recomputation. While in Active state, a router cannot change the next-hop neighbor it is using to forward packets. Once all replies are received for a given query, the destination can transition to Passive state and a new successor can be selected.
Reference: http://docwiki.cisco.com/wiki/Enhanced_Interior_Gateway_Routing_Protocol
Q389. Refer to the exhibit.
IPv6 SLAAC clients that are connected to the router are unable to acquire IPv6 addresses. What is the reason for this issue?
A. Router advertisements are not sent by the router.
B. Duplicate address detection is disabled but is required on multiaccess networks.
C. The interface is configured to support DHCPv6 clients only.
D. The configured interface MTU is too low for IPv6 to be operational.
Answer: A
Q390. DRAG DROP
Drag and drop the protocol on the left to the corresponding administrative distance on the right.
Answer:
