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QUESTION NO:3
A new backup connection is being deployed on a remote site router. The stability of the connection
has been a concern. In order to provide more information to EIGRP regarding this interface, you
wish to incorporate the “reliability” cost metric in the EIGRP calculation with the command metric
weights 1 0 1 0 1.
What impact will this modification on the remote site router have for other existing EIGRP
neighborships from the same EIGRP domain?
A. Existing neighbors will immediately begin using the new metric.
B. Existing neighbors will use the new metric after clearing the EIGRP neighbors.
C. Existing neighbors will resync, maintaining the neighbor relationship.
D. All existing neighbor relationships will go down.
Answer: D
Explanation:
QUESTION NO:4
Refer to the exhibit.
R1 has an EBGP session to ISP 1 and an EBGP session to ISP 2. R1 receives the same prefixes
through both links.
Which configuration should be applied so that the link between R1 and ISP 2 will be preferred for
outgoing traffic (R1 to ISP 2)?
A. Increase local preference on R1 for received routes
B. Decrease local preference on R1 for received routes
C. Increase MED on ISP 2 for received routes
D. Decrease MED on ISP 2 for received routes
Answer: A
Explanation: Explanation
Local preference is an indication to the AS about which path has preference to exit the AS in order
to reach a certain network. A path with higher local preference is preferred more. The default value
of preference is 100.
Reference
http://www.cisco.com/en/US/tech/tk872/technologies_configuration_example09186a0080b82d1f.s
html?
referring_site=smartnavRD
QUESTION NO:11
When you are troubleshooting duplex mismatches, which two errors are typically seen on the full-
duplex end? (Choose two.)
A. runts
B. FCS errors
C. interface resets
D. late collisions
Answer: A,B
Explanation:
QUESTION NO:15
Which three options are considered in the spanning-tree decision process? (Choose three.)
A. lowest root bridge ID
B. lowest path cost to root bridge
C. lowest sender bridge ID
D. highest port ID
E. highest root bridge ID
F. highest path cost to root bridge
Answer: A,B,C
Explanation:
Configuration bridge protocol data units (BPDUs) are sent between switches for each port.
Switches use s four step process to save a copy of the best BPDU seen on every port. When a
port receives a better BPDU, it stops sending them. If the BPDUs stop arriving for 20 seconds
(default), it begins sending them again.
Step 1 Lowest Root Bridge ID (BID)
Step 2 Lowest Path Cost to Root Bridge
Step 3 Lowest Sender BID
Step 4 Lowest Port ID
Reference
Cisco General Networking Theory Quick Reference Sheets
QUESTION NO:26
Refer to the exhibit.
Why is AS 65333 in parentheses?
A. It is an external AS.
B. It is a confederation AS.
C. It is the AS of a route reflector.
D. It is our own AS.
E. A route map has been applied to this route.
F. The BGP next hop is unreachable.
Answer: B
Explanation:
Latest 400-101 Dumps400-101 VCE Dumps400-101 Braindumps
QUESTION NO:28
Which two orders in the BGP Best Path Selection process are correct? (Choose two.)
A. Higher local preference, then lowest MED, then eBGP over iBGP paths
B. Higher local preference, then highest weight, then lowest router ID
C. Highest weight, then higher local preference, then shortest AS path
D. Lowest origin type, then higher local preference, then lowest router ID
E. Highest weight, then higher local preference, then highest MED
Answer: A,C
Explanation:
QUESTION NO:32
Which two tunneling techniques support IPv6 multicasting? (Choose two.)
A. 6to4
B. 6over4
C. ISATAP
D. 6PE
E. GRE
Answer: B,E
Explanation:
When IPv6 multicast is supported (over a 6to4 tunnel), an IPv6 multicast routing protocol must be
used
Restrictions for Implementing IPv6 Multicast
IPv6 multicast for Cisco IOS software uses MLD version 2. This version of MLD is fully backward-
compatible with MLD version 1 (described in RFC 2710). Hosts that support only MLD version 1
will interoperate with a router running MLD version 2. Mixed LANs with both MLD version 1 and
MLD version 2 hosts are likewise supported.
IPv6 multicast is supported only over IPv4 tunnels in Cisco IOS Release 12.3(2)T, Cisco IOS
Release 12.2
(18)S, and Cisco IOS Release 12.0(26)S.
When the bidirectional (bidir) range is used in a network, all routers in that network must be able to
understand the bidirectional range in the bootstrap message (BSM).
IPv6 multicast routing is disabled by default when the ipv6 unicast-routing command is configured.
On Cisco Catalyst 6500 and Cisco 7600 series routers, the ipv6 multicast-routing also must be
enabled in order to use IPv6 unicast routing
Reference http://www.cisco.com/web/about/ac123/ac147/ac174/ac197/
about_cisco_ipj_archive_article09186a00800c830a.html
http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-multicast.html
https://supportforums.cisco.com/thread/183386
QUESTION NO:38
Refer to the exhibit.
This is an MPLS VPN network with OSPF as the PE-CE routing protocol. Which statement is
correct?
A. The routing inside the VPN RED will never work correctly.
B. The routing inside the VPN RED can be enabled by configuring virtual links between the PE
routers.
C. The routing inside the VPN RED can be enabled by configuring area 0 inside the VRF on the
PE routers.
D. The routing inside the VPN RED will work without any special OSPF configuration.
E. The routing inside the VPN RED will work if the PE routers have a full mesh of sham-links
configured for VRF RED.
Answer: D Explanation:
http://www.cisco.com/en/US/docs/net_mgmt/vpn_solutions_center/1.1/user/guide/VPN_UG1.html
QUESTION NO:42
Which type of domains is interconnected using Multicast Source Discovery Protocol?
A. PIM-SM
B. PIM-DM
C. PIM-SSM
D. DVMRP
Answer: A
Explanation: Multicast Source Discovery Protocol (MSDP) is a Protocol Independent Multicast
(PIM) family multicast routing protocol defined by Experimental RFC 3618. MSDP interconnects
multiple IPv4 PIM Sparse-Mode (PIM-SM) domains which enables PIM-SM to have Rendezvous
Point (RP) redundancy and inter-domain multicasting.
Reference
http://en.wikipedia.org/wiki/Multicast_Source_Discovery_Protocol
QUESTION NO:47
Apart from interdomain multicast routing, what else is MSDP used for?
A. Source Specific Multicast and IGMPv2
B. Announcing multicast sources to BGP speakers
C. Anycast RP
D. Intradomain multicast routing
Answer: C
Explanation:
Reference
http://www.cisco.com/en/US/docs/ios/12_2/ip/configuration/
guide/1cfmsdp_ps1835_TSD_Products_Configuration_Guide_Chapter.html
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