A VoIP phone powers up, but it is unable to receive or place calls. After connecting to another switchport, the issue is resolved.Which of the following was most likely the issue with the previous port?
Answer(s): C
The phone received power but was on the wrong VLAN, preventing it from reaching the voice-VLAN DHCP/ TFTP services needed to register and place calls.
A network administrator recently configured an autonomous wireless AP and performed a throughput test via comptiaspeedtester.com. The result was 75Mbps.When connected to other APs, the results reached 500Mbps.Which of the following is most likely the reason for this difference?
Answer(s): A
The autonomous AP was likely set to a narrow channel width (e.g., 20 MHz), capping throughput around 75 Mbps, whereas the other APs use wider channels (40/80 MHz) to achieve 500 Mbps.
Which of the following technologies is most appropriate for a business that requires high-speed access to frequently used web content, such as images and videos?
A CDN caches and serves static web content from edge locations close to users, reducing latency and ensuring high-speed access to images and videos.
Which of the following should be included in an SLA?
SLAs specify the services and support provided - such as scheduled patching and bug-fix releases - along with performance and availability commitments.
A network administrator thinks a change was made to mail servers at comptia.org.Which of the following should the administrator execute to verify the change?
Answer(s): B
Using dig with an ANY query retrieves all DNS records - including MX entries - so you can confirm any changes to the mail servers for comptia.org.
A network technician receives a new ticket while working on another issue. The new ticket is critical to business operations.Which of the following documents should the technician reference to determine which ticket to complete first?
The SLA defines ticket priority levels and response/resolution time commitments, guiding which issue to address first.
A network engineer is troubleshooting connectivity for a newly installed server on an existing VLAN. The engineer reviews the following requested output:The engineer then logs in to the router and runs the following:Which of the following describes the issue?
The server is using a /27 mask (255.255.255.224) while the router's interface is in the 192.168.100.0/24 network. This subnet mismatch prevents proper layer-3 adjacency.
A network administrator installs new cabling to connect new computers and access points. After deploying the equipment, the administrator notices a few of the devices are not connecting properly. The administrator moves the devices to a different port, but it does not resolve the issue.Which of the following should the administrator verify next?
Answer(s): D
Faulty cable termination can prevent link establishment regardless of the switch port used, so verifying proper termination is the next step.
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