CCST Network Troubleshooting & Tools 2

Question 1

A user reports intermittent connectivity drops every few minutes. Which tool would BEST help identify whether the issue is packet loss or latency spikes?

Accepted Answer

ping with extended count

Answer

Running ping with a high count (e.g., ping -n 100) over time reveals packet loss percentages and latency variations.

Question 2

Which command displays the current ARP cache on a Windows system?

Accepted Answer

arp -a

Answer

The arp -a command displays all current ARP cache entries mapping IP addresses to MAC addresses.

Question 3

A technician uses traceroute and sees that hop 5 shows '* * *' but hop 6 responds normally. What does this most likely indicate?

Accepted Answer

Hop 5 blocks ICMP/UDP but forwards traffic

Answer

A router can be configured to drop ICMP TTL-exceeded messages while still forwarding traffic normally, causing asterisks in traceroute output.

Question 4

Which Cisco IOS command shows the status of all interfaces including IP addresses and line/protocol state?

Accepted Answer

show ip interface brief

Answer

The 'show ip interface brief' command provides a concise summary of all interfaces with their IP address, status, and protocol state.

Question 5

A workstation can ping its default gateway but cannot reach the internet. What should the technician check NEXT?

Accepted Answer

Verify the default gateway's routing table and WAN connectivity

Answer

Since the gateway is reachable, the issue is likely upstream — the gateway's WAN link or routing table should be checked next.

(CCST) Cisco Certified Support Technician Networking Practice Test

(CCST) Cisco Certified Support Technician Networking Practice Test

CCST Network Troubleshooting & Tools 2