Exam Code: cisco 400 101 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: CCIE Routing and Switching (v5.0)
Certification Provider: Cisco
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Q1. Refer to the exhibit.
If IS-IS is configured utilizing default metrics, what is the cost for Router 4 to reach the 10.2.2.0/24 network?
A. 1
B. 20
C. 30
D. 63
Answer: C
Explanation:
By default, every link is an IS-IS network has a metric of 10.
Q2. Which two events occur when a packet is decapsulated in a GRE tunnel? (Choose two.)
A. The destination IPv4 address in the IPv4 payload is used to forward the packet.
B. The TTL of the payload packet is decremented.
C. The source IPv4 address in the IPv4 payload is used to forward the packet.
D. The TTL of the payload packet is incremented.
E. The version field in the GRE header is incremented.
F. The GRE keepalive mechanism is reset.
Answer: A,B
Explanation:
After the GRE encapsulated packet reaches the remote tunnel endpoint router, the GRE packet is decapsulated. The destination address lookup of the outer IP header (this is the same as the tunnel destination address) will find a local address (receive) entry on the ingress line card. The first step in GRE decapsulation is to qualify the tunnel endpoint, before admitting the GRE packet into the router, based on the combination of tunnel source (the same as source IP address of outer IP header) and tunnel destination (the same as destination IP address of outer IP header). If the received packet fails tunnel admittance qualification check, the packet is dropped by the decapsulation router. On successful tunnel admittance check, the decapsulation strips the outer IP and GRE header off the packet, then starts processing the inner payload packet as a regular packet. When a tunnel endpoint decapsulates a GRE packet, which has an IPv4/IPv6 packet as the payload, the destination address in the IPv4/IPv6 payload packet header is used to forward the packet, and the TTL of the payload packet is decremented.
Reference: http://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k_r5-3/addr-serv/configuration/guide/b-ipaddr-cg53asr9k/b-ipaddr-cg53asr9k_chapter_01001.html
Q3. Which two statements about LDP advertising when Explicit Null is in effect are true? (Choose two.)
A. Penultimate hop popping is disabled.
B. Penultimate hop popping is enabled.
C. It is the default behavior for LDP.
D. It is used for the advertisement of static routes.
E. It is used for the advertisement of connected routes.
Answer: A,E
Q4. Which two modes of operation does BFD support? (Choose two.)
A. synchronous mode
B. asynchronous mode
C. demand mode
D. echo mode
E. aggressive mode
F. passive mode
Answer: B,C
Explanation:
A session may operate in one of two modes: asynchronous mode and demand mode. In
asynchronous mode, both endpoints periodically send Hello packets to each other. If a number of those packets are not received, the session is considered down. In demand mode, no Hello packets are exchanged after the session is established; it is assumed that the endpoints have another way to verify connectivity to each other, perhaps on the underlying physical layer. However, either host may still send Hello packets if needed.
Reference: http://en.wikipedia.org/wiki/Bidirectional_Forwarding_Detection
Q5. Which three statements about SPAN traffic monitoring are true? (Choose three.)
A. Traffic from a non-source VLAN is discarded when it arrives on a source VLAN.
B. Multiple sessions can send traffic to an individual destination port.
C. It supports up to 32 SPAN ports per switch.
D. The destination port acts as a normal switchport.
E. It supports up to 64 SPAN ports per switch.
F. Only one session can send traffic to an individual destination port.
Answer: A,E,F
Explanation:
You can create up to a total of 64 SPAN and ERSPAN sessions to define sources and destinations on the local device.You can also create a SPAN session to monitor multiple VLAN sources and choose only VLANs of interest to transmit on multiple destination ports.
For example, you can configure SPAN on a trunk port and monitor traffic from different VLANs on different destination ports.
You can configure a particular destination port in only one SPAN session.
Traffic from a non-source VLAN is discarded when it arrives on a source VLAN.
Reference:
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000/sw/4_0/troubleshooti
ng/configuration/guide/n1000v_troubleshooting/trouble_15span.html
Q6. Which IP SLA operation type uses IP to measure the round-trip time between a router and a device?
A. HTTP
B. ICMP Echo
C. ICMP Path Jitter
D. UDP Jitter for VoIP
Answer: B
Q7. Which three values can be used to tag external EIGRP routes? (Choose three.)
A. The router ID of the router that redistributed the route
B. The administrative distance of the external protocol
C. The protocol ID of the external protocol
D. The cost to reach the router that redistributed the route
E. The metric from the external protocol F. The router ID of the router from which the external protocol route was learned
Answer: A,C,E
Explanation:
EIGRP has the notion of internal and external routes. Internal routes are ones that have been originated within an EIGRP autonomous system (AS). Therefore, a directly attached network that is configured to run EIGRP is considered an internal route and is propagated with this information throughout the EIGRP AS. External routes are ones that have been learned by another routing protocol or reside in the routing table as static routes. These routes are tagged individually with the identity of their origination. External routes are tagged with the following information:
The router ID of the EIGRP router that redistributed the route.
The AS number where the destination resides.
A configurable administrator tag.
Protocol ID of the external protocol.
The metric from the external protocol.
Bit flags for default routing.
Reference: http://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/13669-1.html#route_tagging
Q8. Refer to the exhibit.
Which statement is true?
A. There is no issue with forwarding IPv6 traffic from this router.
B. IPv6 traffic can be forwarded from this router, but only on Ethernet1/0.
C. IPv6 unicast routing is not enabled on this router.
D. Some IPv6 traffic will be blackholed from this router.
Answer: D
Explanation:
Here we see that the IPV6 default route shows two different paths to take, one via Ethernet 1/0 and one via Ethernet 0/0. However, only Eth 1/0 shows a next hop IPV6 address (the link local IPV6 address). There is no link local next hop addressed known on Eth 0/0. Therefore, traffic to all destinations will be load balanced over the two paths, but only half of the IPv6 traffic will be sent to the correct upstream router.
Q9. Which additional feature must be enabled on a switch to allow PIM snooping to function correctly?
A. IGMP snooping
B. port security
C. storm control
D. dynamic ARP inspection
Answer: A
Q10. DRAG DROP
Drag and drop the VLAN number on the left to the corresponding default VLAN name on the right.
Answer: