What Windows log should be checked to troubleshoot a Windows service that is falling to start?

You work as a Network Administrator for McRobert Inc. You want to know the NetBIOS name of your computer. Which of the following commands will you use?

One of your Linux systems was compromised last night. According to change management history and a recent vulnerability scan, the system's patches were up-to-date at the time of the attack. Which of the following statements is the Most Likely explanation?

You work as a Network Administrator for Tech Perfect Inc. The company has a Linux-based network. Mark, a Sales Manager, complains that he is unable to logon to the server. You verify that his computer is working properly and that another user is able to logon to the server from Mark's computer. The shadow password policy is implemented in the company. Mark's account entry in the /etc/passwd file is as follows: mark:*:501:100:Mark Smith:/home/mark:bin/tcsh What will you do to resolve the issue?

You work as a Network Administrator for Tech Perfect Inc. The company has a TCP/IP-based network. You have configured a firewall on the network. A filter has been applied to block all the ports. You want to enable sending and receiving of emails on the network. Which of the following ports will you open?
Each correct answer represents a complete solution. Choose two.