Module 12 Network Troubleshooting

Which of the following describes a physical topology diagram?

• Shows VLAN IDs and IP subnets

• Displays logical paths of data flow

• Illustrates how devices are physically connected

• Contains routing protocol configuration

What is the purpose of a configuration file in documentation?

• To test interface connectivity
  

• To maintain a backup of device settings
  

• To store ARP tables
  

• To configure client software
  

Why is establishing a network baseline important?

• To automate DNS lookups
  

• To detect unusual behavior based on normal operations
  

• To configure static routes
  

• To reduce physical cabling
  

Which OSI layer is primarily concerned with cabling and connectors?

• Data Link
  

• Network
  

• Physical
  

• Transport
  

Which tool is most useful for examining Layer 2 frame information?

• NetFlow
  

• Traceroute
  

• Wireshark
  

• Ping
  

A switch port shows high CRC errors. What could be a probable cause?

• Routing misconfiguration
  

• Bad cable or interference
  

• Incorrect DNS setting
  

• Subnet mismatch
  

You replaced a cable, but the PC still can't connect. What should you check next?

• IP address configuration
  

• Traceroute output
  

• NAT table
  

• Routing protocol
  

Why is the ping command useful in troubleshooting?

• It assigns dynamic IPs
  

• It installs updates
  

• It checks basic connectivity
  

• It captures packets
  

A user cannot access a remote site. Traceroute shows the packets stop at the edge router. What’s likely the issue?

• Physical port failure
  

• ACL blocking traffic
  

• DNS resolution error
  

• Broadcast storm
  

How does a logical topology diagram help in troubleshooting?

• Shows cable faults
  

• Identifies patch panel errors
  

• Illustrates IP flow paths and protocols
  

• Displays power consumption