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CompTIA A+ Certification Exam: Core 1, also known as 220-1101, is a popular certification exam for entry-level IT professionals. 220-1101 Exam serves as a starting point for individuals seeking to jumpstart their career in the rapidly growing field of information technology. CompTIA A+ certification validates the essential knowledge and skills required to troubleshoot, configure, and maintain various hardware and software technologies.

CompTIA A+ Certification Exam: Core 1 Sample Questions (Q608-Q613):

NEW QUESTION # 608
A help desk technician thinks a desktop PC has failed due to a defective power supply. Which of the following steps should the technician take NEXT?

A. Document the findings, actions, and outcomes.
B. Establish a plan of action to resolve the problem and implement the solution.
C. Inquire about environmental or infrastructure changes.
D. Conduct external or internal research based on symptoms.

Answer: D

Explanation:
Explanation
https://spryzensecurity.medium.com/what-is-troubleshooting-methodology-40cec6b6494

NEW QUESTION # 609
Which of the following frequency bands do 802.11b and 802.11g operate in?

A. 6GHz
B. 2.4GHz
C. 1GHz
D. 5GHz

Answer: B

Explanation:
Explanation
The frequency bands that 802.11b and 802.11g operate in are 2.4GHz bands, which allow for longer range but lower speed than higher frequency bands such as 5GHz or 6GHz bands used by newer standards such as
802.11a/n/ac/ax.

NEW QUESTION # 610
Which of the following is used to implement network security polices for an environment?

A. Firewall
B. Repeater
C. Managed switch
D. Gateway

Answer: A

Explanation:
It is designed to protect an organization's network infrastructure and data from unauthorized access, while allowing legitimate traffic to pass through. Firewalls can be configured to enforce security policies that block certain types of traffic, limit access to specific network resources, and prevent attacks such as malware and phishing.
A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It establishes a barrier between a trusted internal network and an untrusted external network, such as the Internet. Firewalls are used to implement network security policies for an environment by controlling access to the network and protecting it from unauthorized access.
A firewall is used to implement network security policies. It monitors incoming and outgoing traffic based on predetermined security rules and can block traffic that does not meet the defined criteria. References:
CompTIA A+ Certification All-in-One Exam Guide, Tenth Edition by Mike Meyers (Chapter 6, page 243)

NEW QUESTION # 611
A technician attempts to join a Windows client to a domain but receives the following error:
An attempt to resolve the hostname has failed.
The technician generates the display shown below utilizing ipconfig /all.

Which of the following is the most likely reason for the error?

A. Physical address
B. IPv4 address
C. Subnet mask
D. DNS
E. Default gateway

Answer: D

Explanation:
The most likely reason for the error is that the DNS server is not configured correctly. The technician should check the DNS server settings and make sure they are correct.
DNS, or Domain Name System, is a service that translates domain names, such as www.example.com, into IP addresses, such as 192.168.1.1, that computers use to communicate with each other. DNS is essential for joining a Windows client to a domain, which is a logical group of computers that share a common directory and security policy. A domain name, such as example.com, identifies the domain and its members on the network.
To join a Windows client to a domain, the client needs to resolve the hostname of the domain controller, which is the server that manages the domain and its resources. The client sends a DNS query to the DNS server, asking for the IP address of the domain controller. The DNS server responds with the IP address, and the client uses it to establish a connection with the domain controller and complete the domain join process.
However, if the DNS server is not configured correctly, the client may not be able to resolve the hostname of the domain controller, and receive the error: An attempt to resolve the hostname has failed. This can happen if the DNS server is not reachable, not authoritative, or not updated. For example, the DNS server may have an incorrect IP address, a wrong DNS suffix, a missing or outdated DNS record, or a firewall blocking the DNS traffic.
To fix the error, the technician should verify that the DNS server settings on the client and the domain controller are correct and consistent. The technician can use the ipconfig /all command to display the DNS server settings, such as the IPv4 address, the subnet mask, the default gateway, and the DNS suffix. The technician can also use the nslookup command to test the DNS resolution and the ping command to test the connectivity. The technician should make sure that the client and the domain controller are using the same DNS server, and that the DNS server can resolve the hostname of the domain controller.
References:
* How to Resolve the "Temporary failure in name resolution" Error1
* Strict hostname resolution configured but no hostname was set2
* Error: Hostname Not Resolved to an IP Address - HostGator3
* The Host Name Could Not be Resolved in DNS4
* Troubleshoot DNS name resolution on the Internet - Windows Server5

NEW QUESTION # 612
Which of the following best describes the concept of a DHCP lease?

A. A translation of network names to IP addresses for a device on the network
B. A temporary assignment of an IP configuration to a device on the network
C. A definition of the scope of addresses to be assigned to a device on the network
D. A reservation of an IP configuration for a device on the network

Answer: B

NEW QUESTION # 613
......

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