Network Operations CCIE-ENTERPRISE-INFRASTRUCTURE Practice Questions (Page 5)

Questions 21–25

1. 21expert · hard

   A network administrator is troubleshooting a routing issue where traffic from a specific subnet is not reaching a remote network. The administrator runs 'show ip route' on the router and sees that the route to the remote network is present but has an administrative distance of 200. The administrator also sees a static route with an administrative distance of 1 to the same network. What is the most likely cause of the issue?

   • AThe route with AD 200 is a floating static route that is only used when the primary route fails.
   • BThe static route is not in the routing table because it is not configured correctly.
   • CThe router is using the static route because it has a lower AD, but the next hop is incorrect.
   • DThe route with AD 200 is being used because the static route is not reachable.
   Reveal Solution Discussion Select an answer first
2. 22expert · hard

   A network engineer is analyzing a packet capture from a SPAN session and notices that TCP packets from a client to a server have the window size set to 0. The client is sending data, but the server is not acknowledging. What is the most likely cause?

   • AThe server's receive buffer is full, and it is advertising a zero window.
   • BThe client is sending data too fast, causing the server to drop packets.
   • CThe server is not processing the data because the application is hung.
   • DThe network is experiencing packet loss, causing the window to shrink.
   Reveal Solution Discussion Select an answer first
4. 23expert · hard

   A network administrator is troubleshooting a problem where users on VLAN 10 cannot access a server on VLAN 20. The administrator can ping the server from the router's interface in VLAN 10, but not from a user's PC. The administrator runs 'show ip route' on the router and sees a route to VLAN 20. What should the administrator do next?

   • ACheck the routing table on the server to ensure it has a route back to VLAN 10.
   • BCheck the VLAN configuration on the switch to ensure VLAN 10 and VLAN 20 are properly configured.
   • CCheck the default gateway configuration on the user's PC.
   • DCheck the access control lists on the router that may be blocking traffic from VLAN 10 to VLAN 20.
   Reveal Solution Discussion Select an answer first
5. 24expert · hard

   A network engineer needs to capture traffic on a high-availability pair of switches where a failover occurs. The engineer wants to capture traffic on both switches to analyze the failover behavior. The engineer also wants to minimize the impact on the switches' performance. What is the best approach?

   • AConfigure a SPAN session on each switch to monitor the uplink ports and send the traffic to a single analyzer.
   • BConfigure an ERSPAN session on each switch to send the traffic to a centralized analyzer with different session IDs.
   • CUse tcpdump on the switches' management interfaces to capture traffic.
   • DConfigure a SPAN session on one switch only, as the other switch will have the same traffic.
   Reveal Solution Discussion Select an answer first
6. 25expert · hard

   A network administrator is troubleshooting a problem where a remote site cannot access the internet. The administrator runs 'show ip route' on the router at the remote site and sees a default route pointing to the ISP router. The administrator can ping the ISP router's IP address, but cannot ping an external IP address like 8.8.8.8. What is the most likely cause?

   • AThe ISP router is not forwarding traffic to the internet.
   • BThe remote site's router is not performing NAT.
   • CThe ISP router is blocking ICMP traffic.
   • DThe remote site's router does not have a route to 8.8.8.8.
   Reveal Solution Discussion Select an answer first