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QUESTION 171
Which two of these steps are minimum requirements to configure OSPFv3 under IPv6? (Choose two.)

A.    Configure a routing process using the command ipv6 router ospf [process-id].
B.    Add the network statement for the interfaces on which OSPF will run.
C.    Configure OSPF on the interface that it will run on.
D.    Use the passive-interface command on the interfaces on which OSPF should not run.
E.    Enable routing.

Answer: CE

QUESTION 172
You add the following commands into a routed topology: router eigrp 1 variance 3 traffic-share min across-interfaces. Users now complain about voice quality in your VoIP system. What should be done?

A.    Add the command: router eigrp 1 traffic-share voice interface fast 0/0.
B.    Reconfigure EIGRP to recognize voice packets.
C.    Remove the variance from the configuration.
D.    Reconfigure the VoIP system to use RTP sequence number headers.
E.    Use an H.323 gatekeeper for your VoIP system to negotiate an H.245 uneven packet buffer.
F.    Reconfigure EIGRP to version 2.

Answer: C

QUESTION 173
Refer to the exhibit. How would you get the 1.1.1.1 network into the OSPF database?
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A.    Configure RTA as an ASBR.
B.    Redistribute connected routes on RTA into OSPF.
C.    Set up a virtual link between area 1 and area 0.
D.    Set up a virtual link between area 1 and area 2.
E.    Add a static route into RTB and enter it into OSPF.
F.    Place a network 1.1.1.0 0.0.0.0 command into RTB.
G.    Set up a unique router ID on RTA using an RFC 1918 address.
H.    Change area 0 on RTB to area 1

Answer: C

QUESTION 174
Refer to the exhibit. Router E learned about the PIM RP (designated as 7.7.7.7) from four different sources. Routers A and D advertised the 7.0.0.0 network via EIGRP. Routers B and C advertised the 7.0.0.0 network via OSPF. Considering that all four Ethernet interfaces on router E could potentially lead back to the PIM-RP, when router E receives the first multicast
packet down the shared tree, which incoming interface will be used to successfully pass the RPF check?
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A.    E0
B.    E1
C.    E2
D.    E3
E.    None of these interfaces will be used to successfully pass the RPF check.
F.    All of these interfaces would successfully pass the RPF check.

Answer: A

QUESTION 175
Refer to the exhibit. From the MAC addresses shown in the command output, to which two ports is the multicast stream 225.230.57.199 being forwarded on this switch? (Choose two.)
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A.    Fa6/28
B.    Fa7/20
C.    Gi3/7
D.    Fa4/2
E.    Fa4/14
F.    Fa4/38
G.    Fa6/28
H.    Fa5/7

Answer: CE

QUESTION 176
Refer to the exhibit. Two ISPs have decided to use MSDP and configured routers X and Y (both are PIM RPs) as MSDP peers. In the domain of ISP B, PC A has sent an IGMP membership report for the group 224.1.1.1 and PC B has sent an IGMP membership report for the group 224.5.5.5. Assuming that the MSDP peering relationship between routers X and Y is functional, and given the partial configuration output shown from router X, which two of these statements are true? (Choose two.)
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A.    Router X will contain an entry for 224.1.1.1 in its SA cache and will also have an installed (S, G) entry for this in its mroute table.
B.    Router X will not contain an entry for 224.1.1.1 in its SA cache but will have an installed (*, G) entry for this in its mroute table.
C.    Router X will not contain an entry for 224.5.5.5 in its SA cache but will have an installed (S, G) entry for this in its mroute table.
D.    Router X will not contain an entry for 224.5.5.5 in its SA cache but will have an installed (*, G) entry for this in its mroute table.
E.    Router X will have no entries for 224.5.5.5 in neither its SA cache nor in its mroute table.
F.    Router X will have no entries for 224.1.1.1 in neither its SA cache nor in its mroute table.

Answer: AD

QUESTION 177
You are about to migrate a customer network to use a VSS. Which of these statements is true about a VSS?

A.    The VSS switch must be the root bridge for all VLANs and is automatically designated.
B.    The VSS switch is defined in RFC 4318 as a managed object.
C.    The PAgP+ or LACP protocols are used to maintain the operational state of the VSS devices. D. A VSS interoperates with a virtual port channel.
D.    The 802.1Q or ISL protocols are used to maintain the operational state of the VSS devices.
E.    A VSS increases the size of the spanning-tree domain.

Answer: C

QUESTION 178
You have done a partial migration from 802.1D STP to 802.1w STP. Which of the following is true?

A.    802.1D and 802.1w interoperate only when the 802.1D STP domain supports rapid convergence.
B.    Ports leading to 802.1D devices will run in compatibility mode, while the rest of the ports will run in 802.1w mode.
C.    This is an invalid configuration and a partial migration cannot be done.
D.    The bridge timers will be set to match the 802.1D devices.
E.    A secondary root bridge will always be populated within the 802.1D domain.
F.    If the root bridge is selected within the 802.1D domain, the whole STP domain will run in 802.1D compatibility mode.
G.    In partially migrated 802.1w networks, it is recommended to keep the STP diameter below 4.

Answer: B

QUESTION 179
The network administrator is trying to add Switch1 to the network, but the 802.1 Q trunk is not coming up. Switch1 was previously tested in the laboratory and its trunk configuration worked fine. What are three possible causes of this problem? (Choose three.)

A.    The trunking configuration mode on Switch1 is set to Off.
B.    The trunking configuration mode on the other end is set to On.
C.    The trunking configuration mode on the other end is set to Desirable.
D.    Cisco Discovery Protocol is not running on the other end.
E.    There is a VTP domain name mismatch.
F.    Switch1 does not support 802.1Q.

Answer: AEF

QUESTION 180
The core of a network has four routers connected in a square design with Gigabit Ethernet links using /30 subnets. The network is used to carry voice traffic and other applications. Convergence time is taking more than expected. Which three actions would you take to improve OSPF convergence time? (Choose three.)

A.    Increase MTU of the interfaces to accommodate larger OSPF packets
B.    Change the network type to point-to-point on those links.
C.    Reduce SPF initial timer.
D.    Increase hello interval to avoid adjacency flapping.
E.    Enable OSPF.

Answer: BCD

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