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| Section | Weight | Objectives |
|---|---|---|
| Infrastructure Security | 20% | - Implement IPv6 first-hop security features - Configure Control Plane Policing - Configure and verify Unicast Reverse Path Forwarding - Configure and verify ACLs for IPv4 and IPv6 - Configure and verify AAA |
| Infrastructure Services | 15% | - Describe Catalyst Center Assurance - Configure and verify IP SLA - Configure and verify NetFlow and Flexible NetFlow - Configure and verify SNMP - Configure and verify DHCP - Configure and verify logging and syslog |
| Infrastructure Automation | 10% | - Configure and verify network management using Ansible - Describe REST API features and use cases - Describe configuration management tools |
| VPN Services | 20% | - Implement and troubleshoot GETVPN - Implement and troubleshoot site-to-site VPNs - Implement and troubleshoot DMVPN - Describe MPLS and MPLS VPN architectures |
| Layer 3 Technologies | 35% | - Troubleshoot loop prevention mechanisms - Configure and verify VRF-Lite - Troubleshoot EIGRP and OSPF - Troubleshoot administrative distance - Troubleshoot redistribution between routing protocols - Configure and verify policy-based routing - Describe Bidirectional Forwarding Detection - Configure and troubleshoot BGP - Troubleshoot route maps and route filtering |
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NEW QUESTION # 402
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?
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 # 403
Refer to the exhibit.
The administrator noticed that the connection was flapping between the two ISPs instead of switching to ISP2 when the ISP1 failed. Which action resolves the issue?
Answer: D
Explanation:
https://www.cisco.com/c/en/us/support/docs/ip/ip-routing/200785-ISP-Failover-withdefault- routes-using-I.html
NEW QUESTION # 404
Refer to the exhibit. An engineer is troubleshooting a TACACS problem.
Which action resolves the issue?
Answer: D
NEW QUESTION # 405
Network operations report issues with receiving too many external routes, which caused CPU spike on routers with smaller memories. Which action resolves the issue?
Answer: C
NEW QUESTION # 406
Refer to the exhibit.
An engineer configured IP SLA to monitor a next hop on a router for reachability When the next hop is unreachable, the router is executing tracking and failing over another route, but packet loss is experienced because the reachability is flapping. Which action resolves the issue?
Answer: A
Explanation:
IP SLA (Internet Protocol Service Level Agreement) is a feature that allows you to measure network performance such as latency, jitter, packet loss, and so on. In this case, it's being used to monitor the reachability of a next hop on a router123.
When the next hop is unreachable, the router is executing tracking and failing over to another route. However, packet loss is experienced because the reachability is flapping. This could be due to the router switching back and forth between the primary and backup routes too quickly.
To resolve this issue, you can introduce a delay in the tracking process. This can be done by appending a delay to the track command. Option C suggests appending a delay of 50 seconds for the up state and 60 seconds for the down state45. This means that the router will wait for 50 seconds before declaring the tracked object as up (reachable) and 60 seconds before declaring it as down (unreachable). This delay can help prevent the router from switching routes too quickly, thus reducing the chances of reachability flapping and packet loss45.
References:
* Configure ISP Failover with Default Routes Using IP SLA Tracking - Cisco
* Using IPSLA to change routing - Cisco Community
* How to Use IP SLA Technology to Assess WAN Performance
* Reliable Static Routing with IP SLA - NetworkLessons.com
* Configuring Static Route Tracking using IP SLA (Basic)
NEW QUESTION # 407
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