Net+ Final Review

A network technician has just verified the user’s issue. According to CompTIA’s troubleshooting methodology, what should the technician do next?

• Document the findings and solution

• Establish a theory of probable cause

• Implement preventive measures

• Escalate the issue to a higher tier

Multiple compromised computers under remote control are used to perform a coordinated DDoS attack. What is this network of systems called?

• Trojan farm

• Command cluster

• Zombie hub

• Botnet

Which protocol is responsible for encrypting communications within HTTPS?

• SSL

• IPsec

• TLS

• SSH

You need a subnet that supports at least 260 usable hosts. Which network fits this requirement?

• 192.168.1.0/24

•  192.168.1.0/25

• 192.168.1.0/23

• 192.168.1.0/26

A company needs a disaster recovery site that is fully equipped with hardware, software, and data replication ready for immediate use. Which site type should they use?

• Hot site

• Cold site

• Warm site

• Hybrid site

Which best describes the purpose of Private VLANs (PVLANs)?

• To allow multiple VLANs to share the same subnet

• To isolate devices within the same VLAN for security

• To extend VLANs across multiple switches

• To tag VLAN traffic across trunk links

One user is redirected to an unexpected website when typing a familiar URL, while others are unaffected. What is the most likely cause?

• DNS cache poisoning

• ARP spoofing attack

• Browser proxy misconfiguration

• Incorrect hosts file entry

What is a heat map used for in wireless networking?

• To identify areas of overlapping IP address ranges

• To visualize wireless signal coverage and strength

• To show CPU temperatures of network devices

• To display bandwidth utilization across a WAN

What does the Recovery Point Objective (RPO) define?

• The maximum time it takes to recover a system

• The acceptable amount of data loss measured in time

• The frequency of incremental backups

• The order in which systems are restored

A 2.4 GHz wireless network experiences interference from nearby industrial equipment. What two actions could reduce interference?

• Switch to 5 GHz frequency or use non-overlapping 2.4 GHz channels

• Replace APs with fiber uplinks

• Disable SSID broadcasting or shorten beacon intervals

• Increase transmit power or use overlapping channels