Which of the following should an installer orient a port-side exhaust to when installing equipment?
A. The patch panel
B. The front of the IDF
C. The warm aisle
D. The administrator console
Show Answer
Correct Answer: C
Explanation: In standard data center and IDF layouts, equipment follows a hot aisle/cold aisle design. Cool air is drawn in from the cold aisle (typically the front of the rack), and hot air is exhausted into the warm/hot aisle (rear of the rack). If a device has a port-side exhaust, it should be oriented so that this exhaust airflow is directed into the warm aisle to maintain proper cooling and airflow management.
Question 108
An employee has a new laptop and reports slow performance when using the wireless network. Switch firmware was updated the previous night. A network administrator logs in to the switch and sees the following statistics on the switch interface for that employee:
Which of the following is most likely the cause of the issue?
A. The patch cord from the wall jack is faulty.
B. The switchport bandwidth needs to be increased.
C. Multicast is not configured correctly on the switch.
D. The NIC is set to half duplex.
Show Answer
Correct Answer: D
Explanation: Slow performance on a single wireless user traced to a specific switch interface, combined with interface errors after a firmware update, most strongly indicates a duplex mismatch. When the switch runs full duplex and the NIC is set to half duplex, collisions, CRC errors, and retransmissions occur, causing poor throughput. This matches the observed symptoms better than cabling, bandwidth limits, or multicast configuration issues.
Question 109
Which of the following describes the capability of a cloud service to adjust resources on demand?
A. Elasticity
B. Multitenancy
C. Containers
D. Scalability
Show Answer
Correct Answer: A
Explanation: Elasticity refers to the ability of a cloud service to automatically increase or decrease computing resources on demand in response to workload changes. Multitenancy describes shared infrastructure, containers are a deployment technology, and scalability is a broader concept about growth capacity but not the on-demand adjustment itself.
Question 110
Users are experiencing significant lag while connecting to a cloud-based application during peak hours. An examination of the network reveals that the bandwidth is being heavily utilized. Further analysis shows that only a few users are using the application at any given time. Which of the following is the most cost-effective solution for this issue?
A. Limit the number of users who can access the application.
B. Lease a Direct Connect connection to the cloud service provider.
C. Implement QoS to prioritize application traffic.
D. Use a CDN to service the application.
Show Answer
Correct Answer: C
Explanation: The problem is congestion during peak hours despite only a few active users, indicating that bandwidth is being consumed by non-critical traffic. Implementing QoS is the most cost-effective solution because it prioritizes the cloud application’s traffic over less important traffic without adding new infrastructure or recurring costs. Other options either restrict access, add significant expense, or are not appropriate for interactive application traffic.
Question 111
Which of the following can protect network equipment from voltage variations?
A. MDF
B. Power strips
C. PDU
D. UPS
Show Answer
Correct Answer: D
Explanation: A UPS is specifically designed to protect network equipment from voltage variations such as spikes, surges, brownouts, and brief power losses by regulating voltage and providing battery backup. While some PDUs may include limited power conditioning, CompTIA objectives typically associate voltage regulation and protection from variations with a UPS rather than a standard PDU.
Question 112
A network technician is attempting to harden a commercial switch that was recently purchased. Which of the following hardening techniques best mitigates the use of publicly available information?
A. Changing the default password
B. Blocking inbound SSH connections
C. Removing the gateway from the network configuration
D. Restricting physical access to the switch
Show Answer
Correct Answer: A
Explanation: Publicly available information about commercial switches commonly includes default credentials documented in manuals and online sources. Changing the default password directly mitigates this risk by preventing attackers from using known default logins. The other options do not specifically address exploitation of publicly documented defaults.
Question 113
A company’s Chief Information Security Officer requires that servers and firewalls have accurate time stamps when creating log files so that security analysts can correlate events during incident investigations. Which of the following should be implemented?
A. Syslog server
B. SMTP
C. NTP
D. SNMP
Show Answer
Correct Answer: C
Explanation: Accurate and consistent timestamps across servers and firewalls require clock synchronization. Network Time Protocol (NTP) synchronizes system clocks to a reliable time source, ensuring logs from different devices align correctly for event correlation during investigations. Syslog aggregates logs but does not synchronize time; SMTP handles email; SNMP is for monitoring.
Question 114
During a security audit, a consulting firm notices inconsistencies between the documentation and the environment. Which of the following can keep a record of who made the changes and what the changes are?
A. Network access control
B. Configuration monitoring
C. Zero Trust
D. Syslog
Show Answer
Correct Answer: B
Explanation: Configuration monitoring records configuration changes over time, including what was changed and often who made the change. This provides an audit trail that explains discrepancies between documentation and the live environment, which is exactly what is needed during a security audit.
Question 115
Which of the following allows for interactive, secure remote management of a network infrastructure device?
A. SSH
B. VNC
C. RDP
D. SNMP
Show Answer
Correct Answer: A
Explanation: SSH provides encrypted, interactive command-line access for securely managing network devices like routers and switches. VNC and RDP are for graphical desktop access, and SNMP is primarily for monitoring and limited management rather than interactive control.
Question 116
A network administrator is hosting a local application on a Type 2 hypervisor, but the application only has accessibility to the host machine. Which of the following address types would the administrator most likely visit to access the application?
A. Public
B. Loopback
C. Private
D. APIPA
Show Answer
Correct Answer: B
Explanation: A Type 2 hypervisor runs on top of a host OS. If the hosted application is only accessible from the host machine itself and not from the network or other systems, it would be accessed via the loopback address (127.0.0.1 or ::1), which always refers to the local host.
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