It is impossible to pass Cisco ccie 400 101 dumps exam without any help in the short term. Come to Testking soon and find the most advanced, correct and guaranteed Cisco 400 101 pdf practice questions. You will get a surprising result by our Most recent CCIE Routing and Switching (v5.0) practice guides.
2026 New 400-101 Exam Dumps with PDF and VCE Free: https://www.2passeasy.com/dumps/400-101/
Q1. Which option is the origin code when a route is redistributed into BGP?
A. IGP
B. EGP
C. external
D. incomplete
E. unknown
Answer: D
Q2. Which two statements about the default behavior of IS-IS are true? (Choose two.)
A. The default IS-IS router type is L1/L2.
B. The default IS-IS metric type is wide.
C. The default IS-IS interface circuit type is L1/L2.
D. By default, two IS-IS routers must use the same hello interval and hold timer in order to become neighbors.
Answer: A,C
Q3. Which option is the default number of routes over which EIGRP can load balance?
A. 1
B. 4
C. 8
D. 16
Answer: B
Explanation:
By default, EIGRP load-shares over four equal-cost paths. For load sharing to happen, the routes to load-share over must show up in the IP forwarding table or with the show ip route command. Only when a route shows up in the forwarding table with multiple paths to it will load sharing occur.
Reference: http://www.informit.com/library/content.aspx?b=CCIE_Practical_Studies_I&seqNum=126
Q4. Refer to the exhibit.
If you change the Spanning Tree Protocol from pvst to rapid-pvst, what is the effect on the interface Fa0/1 port state?
A. It transitions to the listening state, and then the forwarding state.
B. It transitions to the learning state and then the forwarding state.
C. It transitions to the blocking state, then the learning state, and then the forwarding state.
D. It transitions to the blocking state and then the forwarding state.
Answer: C
Explanation:
First, the port will transition to the blocking state, immediately upon the change, then it will transition to the new RSTP states of learning and forwarding.
Port States
There are only three port states left in RSTP that correspond to the three possible operational states. The 802.1D disabled, blocking, and listening states are merged into a unique 802.1w discarding state.
STP (802.1D) Port State
RSTP (802.1w) Port State
Is Port Included in Active Topology?
Is Port Learning MAC Addresses?
Disabled
Discarding
No
No
Blocking
Discarding
No
No
Listening
Discarding
Yes
No
Learning
Learning
Yes
Yes
Forwarding
Forwarding
Yes
Yes
Q5. Which two options are reasons to manipulate the delay metric instead of the bandwidth metric for EIGRP routing? (Choose two.)
A. Because the delay metric provides better handling for bursty traffic
B. Because manipulating the bandwidth metric can also affect QoS
C. Because manipulating the bandwidth affects only a particular path
D. Because changes to the delay metric are propagated to all neighbors on a segment
Answer: B,D
Explanation:
Using the bandwidth to influence EIGRP paths is discouraged for two reasons:
. Changing the bandwidth can have impact beyond affecting the EIGRP metrics. For example, quality of service (QoS) also looks at the bandwidth on an interface.
. EIGRP throttles to use 50 percent of the configured bandwidth. Lowering the bandwidth can cause problems like staving EIGRP neighbors from getting hello packets because of the throttling back.
Because changes to the delay metric are propagated to all downstream routers, changing the interface delay parameter is the preferred method of influencing path selection
Reference: http://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/13673-14.html
Q6. Which protocol uses a proprietary 2-byte Type field for multiple protocol support?
A. HDLC
B. PPP
C. CHAP
D. PAP
Answer: A
Q7. Refer to the exhibit.
Traffic from CE1 to CE2 is traveling through the core instead of through R1. All the PE routers have a similar configuration, and BGP peering and extended-community meshing are configured correctly.
Which configuration change routes the traffic through R1?
A)
B)
C)
D)
A. Exhibit A
B. Exhibit B
C. Exhibit C
D. Exhibit D
Answer: A
Q8. When EIGRP is used as the IPv4 PE-CE protocol, which two requirements must be configured before the BGP IPv4 address family can be configured? (Choose two.)
A. the route distinguisher
B. the virtual routing and forwarding instance
C. the loopback interface
D. the router ID
Answer: A,B
Explanation:
A VRF must be created, and a route distinguisher and route target must be configured in order for the PE routers in the BGP network to carry EIGRP routes to the EIGRP CE site. The VRF must also be associated with an interface in order for the PE router to send routing updates to the CE router. Prerequisites Before this feature can be configured, MPLS and CEF must be configured in the BGP network, and multiprotocol BGP and EIGRP must be configured on all PE routers that provide VPN services to CE routers.
Reference:
http://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/seipecec.html#wp1083316
Q9. Refer to the exhibit.
Which statement is true?
A. R1 routes this pseudowire over MPLS TE tunnel 1 with transport label 20.
B. The default route 0.0.0.0/0 is available in the IPv4 routing table.
C. R1 is using an MPLS TE tunnel for this pseudowire, because the IP path is not available.
D. R1 has preferred-path configured for the pseudowire.
Answer: D
Explanation:
Verifying the Configuration: Example In the following example, the show mpls l2transport vc command shows the following information (in bold) about the VCs:
. VC 101 has been assigned a preferred path called Tunnel1. The default path is disabled because the preferred path specified that the default path should not be used if the preferred path fails.
. VC 150 has been assigned an IP address of a loopback address on PE2. The default path can be used if the preferred path fails.
Router# show mpls l2transport vc detail
Local interface. Gi0/0/0.1 up, line protocol up, Eth VLAN 222 up
Destination address: 10.16.16.16, VC ID. 101, VC status: up
Preferred path: Tunnel1, active
Default path: disabled
Tunnel label: 3, next hop point2point
Output interfacE. Tu1, imposed label stack {17 16}
Create timE. 00:27:31, last status change timE. 00:27:31
Signaling protocol: LDP, peer 10.16.16.16:0 up
MPLS VC labels: local 25, remote 16
Group ID. local 0, remote 6
MTU: local 1500, remote 1500
Remote interface description:
Sequencing: receive disabled, send disabled
VC statistics:
packet totals: receive 10, send 10
byte totals: receive 1260, send 1300
packet drops: receive 0, send 0
Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_2sr/12_2sra/feature/guide/srtunsel.html#wp10 57815
Q10. Which three characteristics are shared by subinterfaces and associated EVNs? (Choose three.)
A. IP address
B. routing table
C. forwarding table
D. access control lists
E. NetFlow configuration
Answer: A,B,C