[Dec 06, 2021] Get to the Top with 4A0-C04 Practice Exam Questions

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NEW QUESTION 141
A router in AS 65100 receives three routes for 138.120.0.0/16. The first route has an AS Path of 65200 65400
65300 and a local preference of 150. The second route has an AS Path of 65200 65300 and a local preference of 100. The third route has an AS Path of 65600 65300 and a local preference of 100. Which route will appear in the RIB-out?

• A. Only the first route will appear in the RIB-Out.
• B. Only the third route will appear in the RIB-Out.
• C. All routes will appear in the RIB-Out.
• D. Only the second route will appear in the RIB-Out.

Answer: A

 

NEW QUESTION 142
Which of the following about IS-IS Traffic Engineering on an Nokia 7750 SR is FALSE?

• A. Traffic engineering must be enabled on all IP/MPLS routers along the LSP path.
• B. Traffic engineering information is carried in the extended TLVs.
• C. Traffic engineering is required for constraint-based LSPs.
• D. Traffic engineering information is stored in the opaque database,

Answer: D

 

NEW QUESTION 143
Which of the following is NOT a benefit of "Hub and Spoke'' VPLS deployments?

• A. They prevent loops that can be introduced by mesh deployments.
• B. They can simplify the implementation of security policy enforcement and packet inspection.
• C. They can be used to work around physical topologies that prevent a fully meshed deployment.
• D. They reduce the number of SDPs that need to be configured.

Answer: A

 

NEW QUESTION 144
How does a DMP inform the downstream routers that it has merged detour tunnels?

• A. The DMP sends the DMP_Object in each detour's PATH messages.
• B. The DMP summarizes PATH messages, giving each detour its own MSGJD.
• C. The DMP sends a single PATH message containing the merged DETOUR_Objects.
• D. The DMP identifies itself as the previous hop in each detour's PATH message.

Answer: C

 

NEW QUESTION 145
Click the exhibit.

The output is from PE router R1 about VPRN service 100. From which protocol did router R1 learn the prefix
192.168.20.0/24?

• A. BGP
• B. MP-BGP
• C. MPLS
• D. LDP

Answer: B

 

NEW QUESTION 146
Click the exhibit button.

192.168.3.1 is a loopback interface on router R2 and is distributed to OSPF area 0, but the ping fails from router R3. Which of the following is a possible solution to the problem?

• A. Add the "summaries" option to the NSSA area configuration on router R1
• B. Make a default route on router R2
• C. Add the "originate-default-route" option in the NSSA area configuration on router R3
• D. Make a static route on router R1 to 192.168.3.1

Answer: A

 

NEW QUESTION 147
NSSA LSA packets are what type within an NSSA area, and are converted to what other type at the ABR?

• A. They are type 5 within the area and converted to type 3 at the ABR
• B. They are type 7 within the area and converted to type 5 at the ABR
• C. They are type 5 within the area and are not modified at the ABR
• D. They are type 7 within the area and are not modified at the ABR

Answer: B

 

NEW QUESTION 148
Click on the exhibit.

Which of the following is FALSE?

• A. The router can reach prefix 192.10.1.2/32 through an LDP tunnel.
• B. The Isp-ping tool is used to perform a unidirectional LSP test.
• C. The router can reach prefix 192.10.1.2/32 through a RSVP-TE tunnel.
• D. The router 10.10.10.2 is the egress router of the prefix 192.10.1.2/32.

Answer: C

 

NEW QUESTION 149
Which of the following prefix-lists is the most specific match for prefix 172.31.2.1/24?

• A. Prefix 172.16.0.0/12 longer.
• B. Prefix 172.31.0.0/23 longer.
• C. Prefix 172.31.0.0/22 longer.
• D. Prefix 172.31.0.0/24 exact.

Answer: C

 

NEW QUESTION 150
Which of the following is NOT a goal of BGP routing policies?

• A. To communicate the architecture of an AS to external ASs.
• B. To protect the local AS and other external ASs from bad NLRI.
• C. To protect external networks from instability.
• D. To optimize ingress and egress traffic patterns to best serve the users of the AS.

Answer: A

 

NEW QUESTION 151
Click the exhibit.

AS 65540 routers are iBGP fully-meshed. Assume routers R4, R5 and R6 are configured with addpaths ipv4 send 2 receive". Which routes to 192.168.0.1/27 is router R6 expected to have in its BGP routing table?

• A. Two routes; one from router R4 and one from router R5.
• B. Two routes from router R4.
• C. Four routes; two from router R4 and two from router R5.
• D. Two routes from router R5.

Answer: C

 

NEW QUESTION 152
How many service labels must be signaled to bring up a fully-meshed VPLS among three PE routers?

• A. 0
• B. 1
• C. 2
• D. 3

Answer: B

 

NEW QUESTION 153
An interface is configured on a router for OSPF but the command "show router ospf neighbor" does not show any neighbors. Which of the following is NOT a possible cause?

• A. The interface is included in a different area than the neighbor router.
• B. The interface facing the neighbor is down.
• C. An OSPF database description packet has not been received from the neighbor.
• D. The router has not received a valid OSPF Hello packet from its neighbor.

Answer: C

 

NEW QUESTION 154
Which of the following about the Isp-ping command on the Nokia 7750 SR is FALSE?

• A. The test fails if the LSP is not operationally up.
• B. Echo reply packets may not take the same path as the LSP.
• C. An echo request is sent based on the LSP's label stack.
• D. The IP destination address is used to initiate echo requests,

Answer: D

 

NEW QUESTION 155
Which of the following about SAPs is FALSE?

• A. A SAP can be associated with more than one service.
• B. A SAP is created by specifying a physical port and an encapsulation type.
• C. A SAP is the subscriber's point of entry to the service network.
• D. A SAP can only be created on a port configured as "access".

Answer: A

 

NEW QUESTION 156
Which of the following about route distinguishes on the Nokia 7750 SR is TRUE?

• A. A route distinguisher combined with an IPv4 prefix produces a VPN-IPv4 prefix.
• B. Route distinguishes are used to determine which routes a VPRN should import.
• C. Route distinguishes are appended to IPv4 prefixes to form IPv6 prefixes.
• D. CE routers use a route distinguisher to indicate which VPRN they are associated to.

Answer: A

 

NEW QUESTION 157
Click the exhibit.
AS 65540 routers are iBGP fully-meshed. Prefixes advertised by router R2 have a local preference of 200.
Router R1 advertises the prefix 192.168.1.0/27 to routers R2 and R3. Assuming that router R3 is configured with "advertise-external", what is the expected output of "show router bgp routes" when executed on router R4?

• A. Option C
• B. Option B
• C. Option D
• D. Option A

Answer: A

 

NEW QUESTION 158
An operator configures an Nokia 7750 SR with a loopback interface and IPv6 address. The operator then configures a routing policy to redistribute the loopback prefix into OSPFv3. What type of LSA is used to advertise the route to other OSPFv3 routers in the same area?

• A. Router LSA
• B. AS External LSA
• C. None of the statements are correct.
• D. Intra-Area Prefix LSA
• E. Network LSA
• F. Inter-Area Prefix LSA

Answer: B

 

NEW QUESTION 159
Click the exhibit button.

A static route is created on router R1 "using the "static-route 0.0.0.0/0 next-hop 10.3.3.2" command. What command can be used to test the static route on an Nokia 7750 SR?

• A. ping 0.0.0.0
• B. ping static 10.5.5.5
• C. ping 10.5.5.5
• D. ping static 0.0.0.0/0

Answer: C

 

NEW QUESTION 160
Which of the following correctly lists the 5 OSPF packet types?

• A. Hello, link state refresh, link state update, link state acknowledgement, link state authentication.
• B. Hello, link state update, link state request, link state acknowledgement, database description.
• C. Hello, link state update, link state packet, link State acknowledgement, database description.
• D. Link state update, link state refresh, link state acknowledgement, database description, notification.

Answer: B

 

NEW QUESTION 161
Click the exhibit button.

Two neighboring OSPF routers have exchanged the packets shown. What state is the adjacency in?

• A. The adjacency is in the exchange state.
• B. Full; both routers are exchanging Helios to maintain the adjacency.
• C. The adjacency is in exstart state.
• D. The adjacency is down.

Answer: C

 

NEW QUESTION 162
Which one of the commands below will create a static route to network 2.3.4.0/24 on the AlcatelLucent 7750 SR router?

• A. Static route 2.3.4.0 255.255.255.0 next hop 3.4.5.6
• B. Static-route next-hop 3.4.5.6 2.3.4.0/24
• C. Static route 2.3.4.0/24 next hop 3.4.5.6
• D. Static-route 2.3.4.0/24 next-hop 3.4.5.6

Answer: D

 

NEW QUESTION 163
What is the default preference value for a static route in the Nokia 7750 SR?

• A. 0
• B. 1
• C. 2
• D. 3

Answer: B

 

NEW QUESTION 164
In an IP datagram, which field identifies the receiving application

• A. The port field of the network layer address
• B. The protocol field of the network layer header
• C. The port field of the transport layer header
• D. The protocol field of the transport layer header

Answer: C

 

NEW QUESTION 165
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