Network Troubleshooting Tools Flashcards
6 cards from real CCST practice questions. Tap to flip, then mark Knew It or Still Learning โ missed cards come back until you master them.
Read the first 6 Network Troubleshooting Tools flashcards as text
A technician runs 'ipconfig /release' followed by 'ipconfig /renew'. What is the purpose of this action?
Answer: Release the current DHCP lease and obtain a new IP address
ipconfig /release drops the current DHCP-assigned IP address, and /renew sends a new DHCP discovery to obtain a fresh lease.
Which command flushes the local DNS resolver cache in Windows to force fresh DNS lookups?
Answer: ipconfig /flushdns
ipconfig /flushdns clears the Windows DNS resolver cache, forcing the system to perform new DNS queries for all hostnames.
A user cannot reach a website by name but CAN ping its IP address. Which service is most likely failing?
Answer: DNS
If a host can be reached by IP but not by name, it indicates a DNS resolution failure rather than a connectivity problem.
What does a 'Request timed out' message in a ping output typically indicate?
Answer: The ICMP packet was blocked or the host is unreachable
A 'Request timed out' result means no ICMP reply was received, suggesting the host is unreachable or a firewall is blocking ICMP.
Which Cisco IOS command can a support technician use to verify the IP configuration on a router interface?
Answer: show ip interface brief
'show ip interface brief' provides a quick summary of all interfaces with their IP addresses and up/down status.
A technician uses Wireshark during troubleshooting. What type of tool is Wireshark?
Answer: Packet analyzer (sniffer)
Wireshark is a packet analyzer (protocol analyzer/sniffer) that captures and inspects network traffic at the frame level.