Practice Free 300-410 Exam Online Questions
An engineer creates a default static route on a router with a hop of 10.1.1.1. On inspection, the engineer finds the router has two VRFs, Red and Blue. The next hop is valid for both VRFs and exists in each assigned VRF.
Which configuration achieves connectivity?
- A . ip route vrf BLUE 0.0.0.0 255.255.255.255 10.1.1.1
ip route vrf RED 0.0.0.0 255.255.255.255 10.1.1.1 - B . ip route vrf Red 0.0.0.0 0.0.0.0 10.1.1.1
ip route vrf Blue 0.0.0.0 0.0.0.0 10.1.1.1 - C . ip route vrf 0.0.0.0 0.0.0.0 10.1.1.1
- D . ip route vrf Red 0.0.0.0 255.255.255.255 10.1.1.1
ip route vrf Blue 0.0.0.0 255.255.255.255 10.1.1.1
What is a function of BFD?
- A . peer recovery after a Layer 3 protocol adjacency failure
- B . peer recovery after a Layer 2 adjacency failure
- C . failure detection independent of routing protocols and media types
- D . failure detection dependent on routing protocols and media types
What is a function of BFD?
- A . peer recovery after a Layer 3 protocol adjacency failure
- B . peer recovery after a Layer 2 adjacency failure
- C . failure detection independent of routing protocols and media types
- D . failure detection dependent on routing protocols and media types
Refer to the exhibit.
An engineer is trying to connect to a device with SSH but cannot connect. The engineer connects by using the console and finds the displayed output when troubleshooting.
Which command must be used in configuration mode to enable SSH on the device?
- A . no ip ssh disable
- B . ip ssh enable
- C . ip ssh version 2
- D . crypto key generate rsa
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.
A,C
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.
Refer to the exhibit.
After a misconfiguration by a junior engineer, the console access to router A is not working.
Which configuration allows access to router A?
A)
B)
C)
- A . Option A
- B . Option B
- C . Option C
An engineer configured SNMP notifications sent to the management server using authentication and encrypting data with DES. An error in the response PDU is received as "UNKNOWNUSERNAME. WRONGDIGEST".
Which action resolves the issue?
- A . Configure the correct authentication password using SNMPv3 authPriv .
- B . Configure the correct authentication password using SNMPv3 authNoPriv.
- C . Configure correct authentication and privacy passwords using SNMPv3 authNoPriv.
- D . Configure correct authentication and privacy passwords using SNMPv3 authPriv.
D
Explanation:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/snmp/configuration/xe-3se/3850/snmp-xe-3se-3850-book/nm-snmp-snmpv3.html
Refer to the exhibit.
An engineer configured NetFlow but cannot receive the flows from R1.
Which two configurations resolve the issue? (Choose two)
A)
B)
C)
D)
E)
- A . Option A
- B . Option B
- C . Option C
- D . Option D
- E . Option E
Refer to the exhibit.
Users on a call center report that they cannot browse the internet on Saturdays during the afternoon.
Which configuration resolves the issue?
A)
B)
C)
D)
- A . Option A
- B . Option B
- C . Option C
- D . Option D
What is considered the primary advantage of running BFD?
- A . reduction in time needed to detect Layer 2 switched neighbor failures
- B . reduction in time needed to detect Layer 3 routing neighbor failures
- C . reduction in CPU needed to detect Layer 2 switch neighbor failures
- D . reduction in CPU needed to detect Layer 3 routing neighbor failures