Tested 400-201 Dumps 2021

NEW QUESTION 1
In a PE-CE scenario using OSPF as the routing protocol a down-bit set can be advertised in which OSPF LSA type?

• A. Type 1 LSA
• B. Type 2 LSA
• C. Type 3 LSA
• D. Type 4LSA

Answer: C

NEW QUESTION 2
Which three options are functions of the Cisco Service Control Engine? (Choose three.)

• A. intelligent inspection and control of IP packets
• B. application of session-level bandwidth shaping
• C. provisioning of access aggregation
• D. per-subscriber bandwidth management
• E. Implementation of VPN services

Answer: ABD

NEW QUESTION 3
Which two statements best describe the functionality of the BGP graceful restart capability? (Choose two.)

• A. The peer router sends an end-of RIB message to the restarting router.
• B. The peer router immediately removes the BGP routes that it learned from the restarting router from its BGP routing table.
• C. The restarting router does not remove any stale prefixes after the timer for stale entries expires.
• D. The router establishes BGP sessions with other routers and relearns the BGP routes from other routers that are also capable of graceful restar
• E. The restarting router waits to receive updates from the neighboring router
• F. When the neighboring routers send end-of- RIB messages to indicate that they are done sending updates, the restarting router starts sending its own updates.
• G. The restarting router removes any stale prefixes after the timer for stale entries expires.

Answer: DE

NEW QUESTION 4

Refer to the exhibit. LDP session protection is enabled between all LDP adjacencies. Which impact occurs on the LDP session between CRS-P2 and CRS-P4 if the direct link between them goes down?

• A. The LDP session remains up as the IP forwarding has an alternate path
• B. The LDP session tears down until the link comes up to protect against MPLS black holes
• C. The LDP session tears down then comes backup after the IGP reconvergence
• D. The LDP session tears down until the link comes up, which can cause MPLS black holes

Answer: A

NEW QUESTION 5
What is TCI?

• A. Tag Calling Interface
• B. Tag Control Identifier
• C. ToS Class Interface
• D. Tag Control Information

Answer: D

NEW QUESTION 6
In which Cisco IOS configuration mode is the route distinguisher (RD) configured?

• A. R1(config-route-at)#
• B. R1(config-route-map)#
• C. R1(config-it)#
• D. R1(config-vrf)#
• E. R1(config)#
• F. R1(router)#

Answer: D

NEW QUESTION 7
Option 10A (back-to-back VRF) is an implementation of inter-AS MPLS VPN. Which of four statements about option 10A are not true? (Choose four.)

• A. MPLS is required between the ASBRs.
• B. ASBR must hold all routing information.
• C. It is a scalable solution.
• D. It is a simple solution.
• E. MP-EBGP is used to exchange routes between ASBRs.

Answer: ACDE

NEW QUESTION 8

Refer to the Exhibit,R1 and R5 router are not directly connected loopback 0 is configured as LDP router-id for both R1 and R5 router loopback IPV4 address are reachable between R1 and R5 router. The LDP session between R1 and R5 is not established. There is no access-list applied any router in the path between R1 and R5,which is the reason the LDP session is not working?

• A. The LDP ID must be the physical interface of the interface tunnel between the LDP neighbor
• B. R5 is not configured to accept targeted LDP sessions
• C. Targeted LDP works only for directly connected LDP neighbors
• D. LDP authentication is missing on both R1 and R5

Answer: B

NEW QUESTION 9
What protocol does an IP phone use to learn the voice VLAN ID it should use for voice traffic?

• A. VTP
• B. 802.1q
• C. CDP
• D. Skinny Station Protocol

Answer: C

NEW QUESTION 10
Which controller uses policy-based application profiles?

• A. OpenStack
• B. Cisco Open SDN controller
• C. OpenFlow Controller
• D. Cisco APIC
• E. Cisco UCS director

Answer: D

NEW QUESTION 11
Two MPLS VPN customers want to acquire Internet access. They make use of overlapping address space but do not want to use NAT on the CPEs. Which action satisfies this requirement?

• A. Configure each VRF with a default route in the global table by using a static route toward each customer's range, pointing to the customer interface in the global table.
• B. Configure VRF-aware NAT with a default route in the global table for each VRF that requires it
• C. Configure a separate PE-CE sub interface that terminates in the global routing table on the PE.
• D. Configure the Internet upstream interface inside a VRF, Which becomes an extranet VRF to which customers join and make use of NAT in this VRF.

Answer: AB

NEW QUESTION 12
How would you characterize the source and type in a denial of service attack on a router?

• A. By perform a show ip interface to see the type and source of the attack based upon the access-list matches
• B. By setting up an access-list to permit all ICMP, TCP, and UDP traffic with the log or log- input commands, then use the show access-list and show log commands to determine the type and source of attack
• C. By performing a show interface to see the transmitted load "txload" and receive load "rxload", if the interface utilization is not maxed out, there is no attack underway
• D. By applying an access-list to all incoming and outgoing interfaces, turning off route- cache on all interfaces, then, when telnetting into the router perform a debug IP packet detail

Answer: B

NEW QUESTION 13
Which two steps take place in the BGP Link State architecture ? (Choose two)

• A. IGP is redistributed into BGP-LS
• B. Advertise the BGP-LS NLRIs to the topology server
• C. IGP uses BGP LS data from remote peers
• D. Enable access to the Adj-RIB-In (BGP raw format )of a peer border router or provider edge router
• E. BGP downloads the received BGP LS data to the IGP component on the router

Answer: BC

NEW QUESTION 14
Refer to the exhibit. All links have same bandwidth configured AS 4, AS 4 and AS 7 run OSPF as IGP using default metric values. Which two statements are correct in regards to MSDP SA messages received by R5 located in AS 7? ( Choose two)

• A. All MSDP SA messages from R1 and R2 via R4 will be dropped
• B. All MSDP SA messages from R1 and R2 via R3 will be accepted
• C. All MSDP SA messages from R1 and R2 via R3 will be dropped
• D. All MSDP SA messages from R1 and R2 via R3 will be dropped and all MSDP SA messages from R2 via R4 will be dropped
• E. All MSDP SA messages from R1 and R2 via R4 will be accepted
• F. All MSDP SA messages from R1 via R3 will be accepted and all MSDP SA messages from R2 Via R4 will be accepted

Answer: AB

NEW QUESTION 15
DRAG DROP
Refer to the exhibit.

Drag and drop the NetConf architecture components from the left on to the correct network functionality on the right

Answer:

Explanation:

NEW QUESTION 16
Refer to the exhibit.

All routers are running IS-IS. Which three routers can be Level 1 Only routers? (Choose three.)

• A. A
• B. B
• C. C
• D. D
• E. E
• F. F
• G. G
• H. H

Answer: ADH

NEW QUESTION 17
If the OSPF protocol is used to connect customer edge (CE) routers to service provider edge (PE) routers in the VPN backbone, which two options best describe the use of SHAM links?

• A. A sham-link is created between any two VPN sites that belong to the same OSPF area and share an OSPF backdoor link
• B. A sham-link is seen as an intra-area link between PE routers, an OSPF adjacency is created and database is exchanged
• C. A sham-link is created between two directly connected PE routers so that it is preferred over the low speed backdoor door
• D. A sham-link is part of OSPF network of MPLS-VPN provider.

Answer: AB

NEW QUESTION 18
DRAG DROP
Drag and drop each MPLS TE component from the left onto its correct description on the right

Answer:

Explanation:

NEW QUESTION 19
Which two characteristics of GMPLS are true? (Choose two)

• A. The LSP is established directionally through only one signaling messages
• B. The control channel can terminate on different nodes types that the bearer channels span
• C. OXCs manipulate wavelengths that bear the label implicitly
• D. Two lights paths traversing the same fiber link can share the same wavelength on that link
• E. LMP can be used by the natively photonic switches network element type only

Answer: AC