Passed Exam Today 220-1101

The technician is unable to access the company portal website, but other websites work fine. This suggests an issue with resolving the specific URL of the company portal, which is a function of DNS.

Here's why other options are not the most likely cause:

DHCP reservations: This is not relevant as the issue persists even when the technician tries a different workstation, indicating a problem beyond individual device configuration.

Static IP addresses: Similar to DHCP reservations, static IPs are not likely the cause as both affected workstations are experiencing the issue.

Default gateway: While the default gateway is necessary for internet access, other websites are working, making it less likely to be the root cause.

References:

CompTIA A+ Certification Core 1 220-1101 Study Guide, Chapter 4: Networking, Section 4.2 Addressing and Naming

The most likely cause of the issue is C. Physical cabling issues.

Physical cabling issues can affect the quality and stability of the display signal. If the cable is loose, damaged, or bent, it may cause intermittent connection, interference, or signal loss. This can result in slow, distorted, discolored, or blank display.

To troubleshoot physical cabling issues, the user should check the following steps:

•Make sure the cable is firmly connected to both the display and the video adapter.

•Inspect the cable for any signs of damage, such as cuts, frays, kinks, or exposed wires.

•Check the cable connectors for any bent or broken pins.

•Try a different cable or a different port on the display or the video adapter.

•If possible, test the display with another device or test another display with the same device.

The other options are less likely to cause the issue, because:

•Incorrect data source may result in no display or an error message, but not slow or distorted display.

•Incorrect resolution settings may cause stretched, blurry, or cropped display, but not discolored or blank display.

•Incorrect refresh rate may cause flickering or tearing display, but not slow or distorted display.

•Display burn-in may cause permanent image retention or ghosting on the display, but not intermittent or blank display.

For more information and tips on how to fix common display problems, you can visit these links:

•How to Troubleshoot Display or Video Issues on a Dell Monitor

•Display Troubleshooting - iFixit

•How to Fix the Most Common Problems With LCD Monitors

One of the possible causes of slow OS performance, random shutdowns, and loud fan noise is the CPU overheating. This can happen due to dust accumulation, faulty cooling system, or high CPU usage. Overheating can damage the CPU and other components, so it is important to monitor the CPU temperature and take preventive measures.

References:

The Official CompTIA A+ Core 1 Student Guide (Exam 220-1101) eBook1, page 2-9, section “CPU Cooling Methods”.

The Official CompTIA A+ Core 1 (220-1101) Certification Study Guide2, page 2-11, section “Troubleshooting CPUs”.

A spam gateway is a software solution that filters email messages based on various criteria, such as sender, recipient, subject, content, attachments, and URLs. A spam gateway categorizes incoming network messages as spam or non-spam, and either blocks, quarantines, or delivers them accordingly. A spam gateway can help protect email servers and users from malicious or unwanted emails, such as phishing, malware, or advertising.

A. Serves as a repository for email routing logs. This is not the primary function of a spam gateway. Email routing logs are records of the path and status of email messages as they travel through the network. Email routing logs can help troubleshoot email delivery issues, but they do not filter or categorize email messages.

B. Blocks unrequested ICMP packets from external networks. This is not the primary function of a spam gateway. ICMP (Internet Control Message Protocol) packets are used to communicate network information, such as errors, requests, or replies. Blocking unrequested ICMP packets from external networks can help prevent network scanning or denial-of-service attacks, but it does not filter or categorize email messages.

D. Mitigates DDoS attacks. This is not the primary function of a spam gateway. DDoS (Distributed Denial-of-Service) attacks are attempts to overwhelm a network or server with a large amount of traffic from multiple sources. Mitigating DDoS attacks can help maintain network availability and performance, but it does not filter or categorize email messages.