CompTIALinux+
Domain 5Objective 3
Networking XK0-006 Practice Questions (Page 3)
Part of the Troubleshooting domain, which accounts for 22% of the XK0-006 exam. CompTIA does not publish an official question count, but from its 90-minute exam (~35–60 total, ~8–13 in this domain), expect 2–3 from this objective — we provide 27 practice questions to prepare you well beyond it. (estimate)
27questions here
6free pages
8concepts
22%of the exam
Questions 11–15
- 11
A Linux administrator is troubleshooting why a server cannot connect to a remote database on port 5432. The administrator can ping the remote server's IP address, but the connection times out. Which command should be used to test whether the TCP port is reachable?
Select an answer first - 12
Which command is used to test whether a specific TCP port on a remote host is open and accepting connections?
Select an answer first - 13
A Linux administrator is troubleshooting a DNS issue where a hostname resolves to an incorrect IP address on some servers but not on others. The administrator wants to check the DNS cache on the local system. Which command should be used?
Select an answer first - 14
Which file on a Linux system can be used to manually override DNS resolution for specific hostnames?
Select an answer first - 15
A Linux administrator is troubleshooting a DNS issue where a hostname resolves to an incorrect IP address. The administrator wants to query a specific DNS server directly to see what it returns. Which command should be used?
Select an answer first
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