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Vendor: Cisco
Certifications: CCIE
Exam Name: CCIE Routing and Switching Written Exam
Exam Code: 400-101
Total Questions: 828 Q&As
QUESTION 1
Which two statements about the max-age time in IS-IS are true? (Choose two.)
A. The IS-IS max-age time is 20 minutes by default.
B. The IS-IS max-age time is 60 minutes by default.
C. The IS-IS max-age time increments from zero to max-age.
D. The IS-IS max-age time decrements from max-age to zero.
Correct Answer: AD
QUESTION 2
External EIGRP route exchange on routers R1 and R2 was failing because the routers had duplicate router IDs. You changed the eigrp router-id command on R1, but the problem persists. Which additional action must you take to enable the routers to exchange routes?
A. Change the corresponding loopback address.
B. Change the router ID on R2.
C. Reset the EIGRP neighbor relationship.
D. Clear the EIGRP process.
Correct Answer: D
QUESTION 3
Which two statements about OSPF route filtering are true? (Choose two)
A. It can be based on the source router ID.
B. It can be based on the external route tag.
C. It affects LSA flooding.
D. It can be based on the as-path.
E. It can be based on distance.
Correct Answer: AB
QUESTION 4
Which two statements are true about IS-IS? 400-101 dumps (Choose two.)
A. IS-IS DIS election is nondeterministic.
B. IS-IS SPF calculation is performed in three phases.
C. IS-IS works over the data link layer, which does not provide for fragmentation and reassembly.
D. IS-IS can never be routed beyond the immediate next hop.
Correct Answer: CD
QUESTION 5
Which two statements about PIM-DM are true? (Choose two.)
A. It forwards multicast packets on a source tree.
B. It requires an RP.
C. It forwards multicast packets on a shared distribution tree.
D. It floods multicast packets to neighbors that have requested the data.
E. It floods multicast packets throughout the network.
F. It forwards multicast packets to neighbors that have requested the data.
Correct Answer: AE
QUESTION 6
Refer to the exhibit.
Which BGP feature allows R1 to instruct R2 which prefixes it is allowed to advertise to R1?
A. route refresh
B. Prefix-Based Outbound Route Filtering
C. distribute lists
D. prefix lists
Correct Answer: B
QUESTION 7
Which three capabilities are provided by MLD snooping? (Choose three.)
A. dynamic port learning
B. IPv6 multicast router discovery
C. user-configured ports age out automatically
D. a 5-minute aging timer
E. flooding control packets to the egress VLAN
F. a 60-second aging timer
Correct Answer: ABD
QUESTION 8
Which option describes a limitation of Embedded Packet Capture?
A. It can capture data only on physical interfaces and subinterfaces.
B. It can store only packet data.
C. It can capture multicast packets only on ingress.
D. It can capture multicast packets only on egress.
Correct Answer: C
QUESTION 9
Which two statements about IGPs are true? 400-101 dumps (Choose Two)
A. RIPv2 and IS-IS calculate the metric of a link based on the bandwidth of a link.
B. OSPF and IS-IS are classless protocols.
C. OSPF and EIGRP have high resource usage.D. RiPv2 and EIGRP support VLSM.
E. RIPv2 and OSPF are distance vector protocols.
F. IS-IS and EIGRP are link-state protocols.
Correct Answer: BD
QUESTION 10
In which type of EIGRP configuration is EIGRP IPv6 VRF-Lite available?
A. stub
B. named mode
C. classic mode
D. passive
Correct Answer: B
QUESTION 11
According to RFC 4577, OSPF for BGP/MPLS IP VPNs, when must the down bit be set?
A. when an OSPF route is distributed from the PE to the CE, for Type 3 LSAs
B. when an OSPF route is distributed from the PE to the CE, for Type 5 LSAs
C. when an OSPF route is distributed from the PE to the CE, for Type 3 and Type 5 LSAs
D. when an OSPF route is distributed from the PE to the CE, for all types of LSAs
Correct Answer: C
QUESTION 12
Which two statements about the BGP community attribute are true? (Choose two.)
A. Routers send the community attribute to all BGP neighbors automatically.
B. A router can change a received community attribute before advertising it to peers.
C. It is a well-known, discretionary BGP attribute.
D. It is an optional transitive BGP attribute.
E. A prefix can support only one community attribute.
Correct Answer: BD
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