Real 400-201 Braindumps 2021

NEW QUESTION 1
Two routers that are running MPLS and LDP have multiple links that than connect them to each other. An engineer wants to ensure that the label bindings are not flushed from the LIB if one of the links fails. Which configuration meets this requirement?

• A. the mpls ldp neighbor targeted command
• B. the mpls ip command on a Cisco MPLS TE tunnel
• C. the mpls ldp autoconfig command
• D. the mpls ldp session protection command

Answer: D

NEW QUESTION 2
In which way does SyncE propagate the clocking information in synchronous mode over an Ethernet link?

• A. It encodes the clock information into IEEE 1588v2 packets
• B. It uses the communication channel conveying the clock information that is called SSM
• C. It uses dedicated ESMC frames that are sent at regular intervals
• D. It uses Layer 2 multicast frames that are sent to 01:00:5E:00:01:01

Answer: B

NEW QUESTION 3
Which type of AAL does ATM utilize to deliver CBR traffic?

• A. AAL2
• B. AAL4
• C. AAL5
• D. AAL1
• E. AAL3

Answer: D

Explanation: An ATM Adaptation layer 1 or AAL1 is used for transmitting Class A traffic, that is, real- time, constant bit rate, connection oriented traffic (example- uncompressed audio and video). Bits are fed in by the application at constant rate and must be delivered to other end with minimum delay, jitter or overhead. The input is stream of bits without message boundaries. For this traffic, error detection protocols cannot be used since timeouts and retransmission causes delay but the missing cells are reported to the application, that must take its own action to recover from them.

NEW QUESTION 4
Which statement about PIM sparse mode operations is true?

• A. It does not support all underlying unicast routing protocols like BGP
• B. Receivers are registered with RP by their first hop router
• C. From the RP, traffic flows down a source tree to each receiver.
• D. It supports shared trees only, and assumes all hosts want the multicast traffic
• E. Receivers are joined to the shared tree by their local designated router

Answer: E

NEW QUESTION 5
Which option is the minimum MTU of a link to form a full IS-IS adjacency successfully?

• A. 4096 bytes
• B. 1500 bytes
• C. 1492 bytes
• D. 1460 bytes

Answer: C

NEW QUESTION 6
A service provider offers four classes of service for MPLS VPN customer with the following IPP/EXP values

• A. voice=5i
• B. video=4ii
• C. priority-data =3i
• D. best-effort data=0The service provider also supports multicast VPN services in the priority data and best- effort classe
• E. Multicast VPN is implemented as a draft-rosen profil
• F. On a P router, in the MPLS core, the ingres
• G. QoS policy-map must classify all incoming packets, so that different classes of traffic can be properly handled in fabric queues and egress queue
• H. All types of packets in the core network must be covered'Which ingress classification offers the optimal performance and provides the minimum number of actions that match the service provider QoS requirements?A.class-map match-any VOICE match mpls experiment topmost 5 class-map match-any VIDEO match mpls experiment topmost 4 class-map match-any CONTROL match mpls experiment topmost 6 class-map match-any PRIORITY match mpls experimental topmost 3!policy-map INGRESS class VOICEset qos-group 5 class VIDEO set qos-group 4class CONTROL set qos-group 6 class PRIORITY set qos-group 3 class class-default B.class-map match-any VOICE match mpls experiment topmost 5 class-map match-any VIDEO match mpls experiment topmost 4 class-map match-any CONTROL match mpls experiment topmost 6 7match ip precedence ipv4 internet network class-map match-any PRIORITYmatch mpls experimental topmost 3 match ip precedence ipv4 flash!policy-map INGRESSclass VOICE set qos-group 5 class VIDEO set qos-group 4class CONTROL set qos-group 6 class PRIORITY set qos-group 3 class class-default C.class-map match-any VOICE match mpls experiment topmost 5 match ip precedence ipv4 critical class-map match-any VIDEO match mpls experiment topmost 4match ip precedence ipv4 flash-override class-map match-any PRIORITYmatch mpls experimental topmost 3 match ip precedence ipv4 flash!policy-map INGRESS class VOICEset qos-group 5 class VIDEO set qos-group 4 class PRIORITY set qos-group 3class class-default

Answer: C

NEW QUESTION 7
An engineer is configuring a Cisco CRS-1 Multishelf System. Which option describes the minimum LCC and FCC requirements for proper functionality?

• A. two LCCs and one FCC
• B. one LCC and one FCC
• C. two LCCs and two FCCs
• D. one LCC and two FCCs

Answer: B

NEW QUESTION 8
Which IEEE task group provides a method to implement QoS on an Ethernet level?

• A. 802.1ab
• B. 802.1p
• C. 802.1q
• D. 802.1s
• E. 802.1w

Answer: B

NEW QUESTION 9
Which descriptions of Netflow is correct? (Choose three.)

• A. By default,Netflow records bidirectional IP traffic flow.
• B. Netflow answers questions regarding IP traffi
• C. who, what, where, when, and how
• D. Netflow accounts for both transit traffic and traffic destined for the router.
• E. Netflow returns the subinterface information in the flow records.

Answer: BCD

NEW QUESTION 10
Which command will display the MPLS label binding for IP prefix 1.1.1.0 on the router?

• A. All of the above.
• B. show tag-switching tdp binding 1.1.1.0/24
• C. show tag-switching tdp bindings neighbor 1.1.1.0
• D. A and B both will show the binding.
• E. show tag-switching interface e0/0

Answer: B

NEW QUESTION 11
What is one of the functions of a LISP ingress tunnel router?

• A. Ability to integrity-check LISP site registration messages using a SHA2-based HMAC algorithm
• B. Responsible for finding EID-to-RLOC mappings for all traffic destined for LISP-capable sites
• C. Accept encapsulation Map-request messages, decapsulate them to the MS responsible for the ETR authoritative for the requested EIDs
• D. Allows EIDs and RLOCs to communicate in a LISP site that contains EIDs in one address family and RLOCs in a different address family

Answer: B

NEW QUESTION 12
In the Apache Web Server configuration, the command KeepAlive ON is used to

• A. Allow a CSS to probe the server
• B. Allow a connection to be closed with a TCP RESET
• C. Allow persistent connections
• D. Allow the use of HTTP HEAD request

Answer: C

NEW QUESTION 13
Typical ADSL broadband Internet access requires a username and password to be entered on end-user PC connected to the ADSL modem in order for the end user to gain access to the Internet. If a Cisco ADSL router is used instead of an ADSL modem, what functionality is required on the Cisco ADSL router so the end-user connected to the Cisco ADSL router can access the Internet without entering a username and password?

• A. Route Bridge Encapsulation (RBE)
• B. PPPoA
• C. Integrated Routing and Bridging (IRB)
• D. AAA
• E. PPPoE client

Answer: E

NEW QUESTION 14
How does BGPsec protect advertisements by preventing from the malicious traffic flows?

• A. It validates the AS path
• B. It validates only the originating AS
• C. It validates routes with encryption
• D. It validates the next-hop AS

Answer: A

NEW QUESTION 15
R1#show ip cache flow.

A network administrator issues the command "show ip cache flow" and finds the shown output. What can be concluded? (Choose two.)

• A. It is normal traffic.
• B. There is a potential sacrificed host located at network 192.1.6.0 generating attacks.
• C. There is a potential DOS attack on device of 194.10.6.2.
• D. It is multicast traffic source from 194.10.6.2
• E. It is multicast traffic destined for 194.10.6.2

Answer: BC

NEW QUESTION 16
A network has a single exit and is using a default route An operator is worried about denial of service at the network border Which unicastRPF check mode must the operator apply at the border for optimal protection?

• A. loose mode with allow self ping
• B. loose mode
• C. strict mode with allow-self-ping
• D. strict mode with allow -default option
• E. strict mode

Answer: E

NEW QUESTION 17
Operations team must deploy Inter-Chassis Communication Protocol to provide high availability services to dual-homed CE nodes. On which nodes must the Inter-Chassis Communication Protocol be configured to meet this requirement?

• A. P nodes
• B. Metro Ethernet switches nodes
• C. CE nodes
• D. PE nodes

Answer: D