CompTIA 220-1201 Exam Questions
CompTIA A+ Certification: Core 1 (Page 7 )

Updated On: 18-Apr-2026

An IT specialist sets up a wireless router in a SOHO environment. Afterward, several devices cannot access the internet and are assigned IP addresses starting with 169.254.
Which of the following is the best action to resolve this issue?

  1. Reboot the wireless router.
  2. Shorten the lease time.
  3. Use static IP addresses.
  4. Increase the DHCP pool size.

Answer(s): A

Explanation:

Addresses in the 169.254.x.x range indicate the clients were unable to contact a DHCP server and fell back to

APIPA. Since the router provides DHCP in a SOHO setup, restarting it will restore the DHCP service so devices can obtain valid IP addresses again.



A customer reports slow network speeds.
Which of the following components is most likely failing?

  1. CPU
  2. NIC
  3. HDD
  4. RAM

Answer(s): B

Explanation:

The Network Interface Card is responsible for handling all network traffic. If it's failing or degraded, you'll observe slow network throughput even when other components are functioning correctly.



A support technician receives a call stating that a user has added a device to the network. The user used the same configurations from another workstation.
When both workstations are turned on, neither can access the network reliably.
Which of the following is the most likely cause of the issue?

  1. The new computer has a duplicate IP address.
  2. The DNS server is registering both hostnames.
  3. The network cable was improperly terminated
  4. The security on the switchport needs to be reset.

Answer(s): A

Explanation:

By cloning the other workstation's network settings, both machines share the same IP. An IP conflict prevents either from reliably communicating on the network, assigning a unique address to the new PC resolves the issue.



A technician needs to confirm that desktop PCs can be deployed to a global, remote workforce.
Which of the following specifications should the technician validate?

  1. Input voltage
  2. BIOS language support
  3. Supply chain security
  4. Power efficiency

Answer(s): A

Explanation:

Verifying that the PCs' power supplies support the full range of international mains voltages (typically 100­240 VAC) ensures they can be plugged in and powered reliably in any country without needing specialized transformers.



A company deploys server machines in a public cloud.
Which of the following cloud service models is this an example of?

  1. Platform as a service
  2. Anything as a service
  3. Infrastructure as a service
  4. Software as a service

Answer(s): C

Explanation:

Deploying and managing virtual server instances in a public cloud, while the provider handles the underlying hardware, networking, and virtualization layer, is the hallmark of IaaS.



A customer needs to install a new printer in their network. The customer reports that users had intermittent connectivity issues with previous printers.
Which of the following should the technician configure on the new printer to prevent this issue?

  1. Gateway IP address
  2. DHCP IP address
  3. Static IP address
  4. Public IP address

Answer(s): C

Explanation:

Assigning a fixed (static) IP to the printer ensures it always resides at the same network address, eliminating the intermittent connectivity problems that can occur when DHCP leases expire or addresses change.



Which of the following DNS records would an administrator change to redirect email flow?

  1. MX
  2. TXT
  3. SPF
  4. CNAME

Answer(s): A

Explanation:

MX (Mail Exchanger) records specify which mail servers are responsible for receiving email for a domain.
Changing the MX record reroutes incoming email to the designated server.



A technician is troubleshooting a network issue. Users report that the connection keeps dropping and reconnecting every few seconds. The technician:

Verifies the network configuration settings are correct on the workstation

Tests the network cable from the workstation to the switch and finds no issues

Uses a known-good workstation on the existing network cable and replicates the reported issue

Which of the following should the technician do next?

  1. Add new network hardware to reduce congestion
  2. Assign a static IP to the impacted workstations.
  3. Validate the environment for external interference.
  4. Check the network logs for evidence of port flapping.

Answer(s): D

Explanation:

Since the NIC, cable, and workstation configuration have all been ruled out, and the problem persists even with a known-good PC on the same switch port, this behavior points to an unstable link at the switch itself (often called "port flapping"). Examining the switch's event or syslog will reveal if the port is constantly going up and down, confirming a hardware or configuration issue on the switch side.



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