Question: Which of the following command-line tools is used to query DNS name servers for information about host addresses and other DNS records?

dig

ip

ipconfig

ping

Answer: dig

Question:

Answer: Incorrect subnet mask

(An incorrect subnet mask will result in a failed or extremely limited connection to the network.)

Question:

Answer: Class B

Question:

Answer: Syslog

Question:

Answer: ping

Question: The University of Bethesda has requested your professional help in giving a masterclass on how to use Telnet ports for interacting with remote computers. Which of the following ports will you open to teach students how to establish an unencrypted connection with a remote computer?

22

23

80

443

Answer: 23

Question:

Answer: Port 5061

Question: Which of the following protocols is used for encrypted control of remote Windows computers?

RDP

ICMP

Syslog

NTP

Answer: RDP

Question:

Answer: dig google.com

Question: You are the DNS administrator and have been tasked to identify an email server in a DNS zone file. Which of the following resource records would you apply as a DNS administrator in this case?

CNAME record

AAAA record

PTR record

MX record

Answer: MX record