NEW QUESTION 1

Which two solutions are used to overcome a flapping link that causes a frequent label binding exchange between MPLS routers? (Choose two)

• A. Create link dampening on links to protect the session.
• B. Increase input queue on links to protect the session.
• C. Create targeted hellos to protect the session.
• D. Increase a hold-timer to protect the session.
• E. Increase a session delay to protect the session.

Answer: AC

Explanation:
To avoid having to rebuild the LDP session altogether, you can protect it. When the LDP session between two directly connected LSRs is protected, a targeted LDP session is built between the two LSRs. When the directly connected link does go down between the two LSRs, the targeted LDP session is kept up as long as an alternative path exists between the two LSRs.
For the protection to work, you need to enable it on both the LSRs. If this is not possible, you can enable it on one LSR, and the other LSR can accept the targeted LDP Hellos by configuring the command mpls ldp discovery targeted-hello accept.
Reference: https://www.ccexpert.us/mpls-network/mpls-ldp-session-protection.html Or from the reference
at https://www.ciscolive.com/c/dam/r/ciscolive/us/docs/2019/pdf/5eU6DfQV/TECMPL-3201.pdf
Troubleshooting LDP Issues
Problem:
I. When a link flaps (for a short time),
… Solution:
+ When LDP session supported by link hello is setup, create a targeted hello to protect the session.

NEW QUESTION 2

Refer to the exhibits.

A user on the 192.168.1.0/24 network can successfully ping 192.168.3.1, but the administrator cannot ping 192.168.3.1 from the LA router. Which set of configurations fixes the issue?
A)

B)

C)

D)

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

Answer: B

NEW QUESTION 3

How does an MPLS Layer 3 VPN function?

• A. set of sites use multiprotocol BGP at the customer site for aggregation
• B. multiple customer sites interconnect through service provider network to create secure tunnels between customer edge devices
• C. set of sites interconnect privately over the Internet for security
• D. multiple customer sites interconnect through a service provider network using customer edge to provider edge connectivity

Answer: D

Explanation:
A Multiprotocol Label Switching(MPLS) Layer 3 Virtual Private Network (VPN) consists of a set of sites that are interconnected by means of an MPLS provider core network. At each customer site, one or more customer edge (CE) routers attach to one or more provider edge (PE) routers. Reference:
https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k-r6-5/lxvpn/configuration/g uide/b-l3vpn-cg-asr9000-65x/b-l3vpn-cg-asr9000-65x_chapter_010.pdf

NEW QUESTION 4

Which command allows traffic to load-balance in an MPLS Layer 3 VPN configuration?

• A. multi-paths eibgp 2
• B. maximum-paths 2
• C. Maximum-paths ibgp 2
• D. multi-paths 2

Answer: C

Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/mpls/configuration/guide/mpls_cg/mp

NEW QUESTION 5

Drag and drop the IPv6 first hop security device roles from the left onto the corresponding descriptions on the right.

• A. Yes
• B. Not Mastered

Answer: A

NEW QUESTION 6

Refer to the exhibit.

An engineer must establish multipoint GRE tunnels between hub router R6 and branch routers R1, R2, and R3. Which configuration accomplishes this task on R1?
A)

B)

C)

D)

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

Answer: D

Explanation:
We have an example of how to configure DMVPN Phase II and we show the configuration here for your reference:
Diagram Description automatically generated

DMVPN Phase II – Dynamic Mapping
Text Description automatically generated

Note: Although Phase II – Dynamic Mapping is “dynamic” but we still need to add a static entry for the hub because without that entry, the NHRP registration cannot be sent.

NEW QUESTION 7

Drag and drop the LDP features from the left onto the descriptions on the right

• A. Yes
• B. Not Mastered

Answer: A

NEW QUESTION 8

Refer to the exhibit.

An engineer configured IP SLA on R1 to avoid the ISP link flapping problem. but it is not working as designed IP SLA should wait 30 seconds before switching traffic to a secondary connection and then revert to the primary link after waning 20 seconds, when the primary link is available and stabilized. Which configuration resolves the issue?

• A. R1(config)#ip sla 700R1(config-ip-sla)#delay down 30 up 20
• B. R1(config)#ip sla 700R1(config-ip-sla)#delay down 20 up 30
• C. R1(config)#track 700 ip sla 700R1(config-track)#delay down 30 up 20
• D. R1(config)#track 700 ip sla 700R1(config-track)#delay down 20 up 30

Answer: C

Explanation:
“wait 30 seconds before switching traffic to a secondary connection” -> delay down 30 “then revert to the primary link after waiting 20 seconds” -> up 20
Under the track object, you can specify delays so we have to configure delay under “track 700 ip sla 700” (not under “ip sla 700”).

NEW QUESTION 9

Refer to the exhibit.

A network engineer must establish communication between three different customer sites with these requirements:
Site-A: must be restricted to access to any users at Site-B or Site-C.
Site-B and Site-C must be able to communicate between sites and share routes using OSPF.

Which configuration meets the requirements?

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

Answer: C

NEW QUESTION 10


Refer to lhe exhibit After an engineer configured a new Cisco rouler as a DHCP server, users reponed iwo primary issues:
Devices in the HR subnet have intermittent connectivity problems.
Workstations in the LEGAL subnet cannot obtain IP addresses.
Which configurations must the engineer apply to ROUTER_1 to restore connectivity for the affected devices?

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

Answer: A

NEW QUESTION 11

A network administrator performed a Compact Flash Memory upgrade on a Cisco Catalyst 6509 Switch. Everything is functioning normally except SNMP, which was configured to monitor the bandwidth of key interfaces but the interface indexes are changed. Which global configuration resolves the issue?

• A. snmp-server ifindex permanent
• B. snmp ifindex permanent
• C. snmp-server ifindex persist
• D. snmp ifindex persist

Answer: C

Explanation:
The SNMP ifIndex persistence feature provides an interface index (ifIndex) value that is retained and used when the router reboots. The ifIndex value is a unique identifying number associated with a physical or logical interface. In the following example, SNMP ifIndex persistence is enabled for all interfaces:
router(config)# snmp-server ifindex persist

NEW QUESTION 12



Refer to the exhibit A customer reported an issue with a fiber link failure between RC and RE Users connected through the spoke location face disconnection and packet drops with the primary email server (172.16.16.1) but have no issues with the backup email server (172.16.26.1). All the router loopback IPs are advertised through the OSPF protocol. Which configuration resolves the issue?

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

Answer: B

NEW QUESTION 13

Refer to the exhibit.

An engineer implemented CoPP but did not see OSPF traffic going through it. Which configuration resolves the issue?

• A. ip access-list extended OSPF permit ospf any any
• B. policy-map COPP class OSFP police 8000 conform-action transmit exceed-action transmit violate-action drop
• C. control-plane service-policy input COPP
• D. class-map match-all OSFP match access-group name OSPF

Answer: B

NEW QUESTION 14

Refer to the exhibit.

Users in the branch network of 2001:db8:0:4::/64 report that they cannot access the Internet. Which command is issued in IPv6 router EIGRP 100 configuration mode to solve this issue?

• A. Issue the eigrp stub command on R1
• B. Issue the no neighbor stub command on R2.
• C. Issue the eigrp command on R2.
• D. Issue the no eigrp stub command on R1.

Answer: D

NEW QUESTION 15

Refer to the exhibit.

An engineer must block access to the console ports for all corporate remote Cisco devices based on the recent corporate security policy but the security team stilt can connect through the console port. Which configuration on the console port resolves the issue?

• A. transport input telnet
• B. login and password
• C. no exec
• D. exec 0.0

Answer: C

Explanation:
“no exec” will disable access to a line. It is used if we want to allow only outgoing session (and disable incoming session) so this command will block all console port access.
There is no “exec 0 0” command. We can only find the “exec prompt” command in IOS Version 15.4(2)T4.

The most similar command is “exec-timeout 0 0” command, which is used to prevent Telnet/SSH sessions from timing out.

NEW QUESTION 16

Refer to the exhibit.

Which configuration denies Telnet traffic to router 2 from 198A:0:200C::1/64?
A)

B)

C)

D)

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

Answer: A

NEW QUESTION 17


Refer to the exhibit. An engineer configured two ASBRs, 10.4.17.6 and 10.4.15.5, in an OSPF network to redistribute identical routes from BGR However, only prefixes from 10.4.17.6 are installed into the routing table on R1. Which action must the engineer take to achieve load sharing for the BGP-originated prefixes?

• A. The ASBRs are advertising the redistributed prefixes with the iBGP metric and must be modified to Type 1 on ASBR 10.4.17.6.
• B. The ASBRs are advertising the redistributed prefixes with a different admin distance and must be changed to 110 on ASBR 10.4.15.5.
• C. The admin distance of the prefixes must be adjusted to 20 on ASBR 10.4.15.5 to advertise prefixes to R1 identically from both ASBRs.
• D. The ASBRs are advertising the redistributed prefixes as Type 1 and must be modified to Type 2

Answer: D

NEW QUESTION 18
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