- (Exam Topic 3)
Which of the following would be the MOST likely attack used to bypass an access control vestibule?
Correct Answer:A
Tailgating is when someone follows an authorized person into a restricted area without having the proper credentials. This is usually done by pretending to be with the authorized person, or by offering assistance. Tailgating is a social engineering attack and does not require any technical skill.
- (Exam Topic 1)
A technician is writing documentation regarding a company’s server farm. The technician needs to confirm the server name for all Linux servers. Which of the following commands should the technician run?
Correct Answer:B
The nslookup command should be run to confirm the server name for all Linux servers. Nslookup is a tool that queries DNS servers to resolve hostnames to IP addresses or vice versa. It can also provide other information about DNS records, such as MX, NS, SOA, etc. By running nslookup with the IP address of a Linux server, the technician can obtain its hostname. References:
https://www.howtogeek.com/663056/how-to-use-the-nslookup-command-on-linux/
- (Exam Topic 3)
After a critical power issue, the network team was not receiving UPS status notifications. The network team would like to be alerted on these status changes. Which of the following would be BEST to use tor these notifications?
Correct Answer:A
- (Exam Topic 3)
Which of the following will reduce routing table lookups by performing packet forwarding decisions independently of the network layer header?
Correct Answer:A
Multiprotocol Label Switching, or MPLS, is a networking technology that routes traffic using the shortest path based on “labels,” rather than network addresses, to handle forwarding over private wide area networks. As a scalable and protocol-independent solution, MPLS assigns labels to each data packet, controlling the path the packet follows. MPLS greatly improves the speed of traffic, so users don’t experience downtime when connected to the network.
- (Exam Topic 3)
Which of the following records can be used to track the number of changes on a DNS zone?
Correct Answer:A
The DNS ‘start of authority’ (SOA) record stores important information about a domain or zone such as the email address of the administrator, when the domain was last updated, and how long the server should wait between refreshes. All DNS zones need an SOA record in order to conform to IETF standards. SOA records are also important for zone transfers.