Server+ Network Connectivity Troubleshooting

1. When a server cannot reach a remote host, what is the first diagnostic tool you should use to verify basic connectivity?

Tracert

Ping

Netstat

Nslookup

2. A server shows 'Request timed out' for all ping attempts to a gateway. What should you check first?

DHCP server status

Physical connectivity and IP configuration

DNS server settings

Firewall rules on the server

3. When diagnosing server connectivity, what does high latency in traceroute output typically indicate?

DNS failure

Slow network links or congested routers along the path

Complete packet loss

NIC driver corruption

4. A server has two network adapters but only one is functioning. How do you determine which adapter is active?

Check Device Manager and verify network adapter status

Run ipconfig and look for active interfaces

Both A and B

Restart both adapters simultaneously

5. A server's network interface shows 'down' status. Which troubleshooting step should come first?

Rebuild the NIC driver

Verify physical cable connection

Reconfigure IP settings

Restart the network service

6. A server cannot resolve domain names. Which service should you verify is running and properly configured?

DHCP

DNS

WINS

NTP

7. What does the IPCONFIG /ALL command reveal on a Windows server that helps diagnose network configuration issues?

Active connections and listening ports

IP address, subnet mask, gateway, and DNS servers

Real-time packet loss percentages

Active network processes and services

8. A server shows 'No route to host' error. Which of the following is most likely the cause?

DNS resolution failure

Missing gateway or routing entry

Firewall blocking ICMP

NIC driver issue

Submit

10. When troubleshooting server connectivity, what does checking ARP cache help diagnose?

DNS resolution problems

Layer 2 to Layer 3 address mapping issues

TCP connection timeouts

Firewall rule violations

Submit

12. Which command would you use to test TCP connectivity to a specific port on a remote server?

Ping -p

Telnet or Test-NetConnection

Arp -a

Nslookup

Submit

15. When a server experiences intermittent connectivity issues, which diagnostic approach is most effective?

Run ping with continuous monitoring

Check event logs for network errors

Monitor packet loss over time with tools like ping or pathping

Replace the network cable immediately

16. A server cannot communicate with hosts on a different subnet. What is the most likely misconfiguration?

Incorrect subnet mask

Missing default gateway

Disabled network interface

Both A and B

Submit

18. Which tool would help identify if a firewall is blocking traffic to a specific server port?

Ping only

Port scanner or telnet test

Ipconfig

Arp -a

Submit

20. Which OSI layer is primarily responsible for logical addressing and routing decisions in network communication?

Layer 1 - Physical

Layer 2 - Data Link

Layer 3 - Network

Layer 4 - Transport

Server+ Troubleshooting Server Network Connectivity Quiz

1. When a server cannot reach a remote host, what is the first diagnostic tool you should use to verify basic connectivity?

2.

What first name or nickname would you like us to use?

2. A server shows 'Request timed out' for all ping attempts to a gateway. What should you check first?

3. When diagnosing server connectivity, what does high latency in traceroute output typically indicate?

4. A server has two network adapters but only one is functioning. How do you determine which adapter is active?

5. A server's network interface shows 'down' status. Which troubleshooting step should come first?

6. A server cannot resolve domain names. Which service should you verify is running and properly configured?

7. What does the IPCONFIG /ALL command reveal on a Windows server that helps diagnose network configuration issues?

8. A server shows 'No route to host' error. Which of the following is most likely the cause?

9. The ______ command traces the route packets take to reach a destination host.

10. When troubleshooting server connectivity, what does checking ARP cache help diagnose?

11. The ______ utility displays all active network connections and listening ports on a server.

12. Which command would you use to test TCP connectivity to a specific port on a remote server?

13. The command ______ displays the routing table on Windows and Linux servers.

14. The ______ protocol operates at Layer 4 and is used for reliable, connection-oriented communication.

15. When a server experiences intermittent connectivity issues, which diagnostic approach is most effective?

16. A server cannot communicate with hosts on a different subnet. What is the most likely misconfiguration?

17. The ______ command resolves a domain name to its corresponding IP address.

18. Which tool would help identify if a firewall is blocking traffic to a specific server port?

19. The ______ address is used for local network communication and does not route beyond the local network segment.

20. Which OSI layer is primarily responsible for logical addressing and routing decisions in network communication?