CompTIA SK0-005 Practice Test - Questions Answers, Page 33

The most likely cause of the internet issue is B. The DHCP scope is full.

A DHCP scope is a range of IP addresses that a DHCP server can assign to DHCP clients on a network.

A DHCP scope has a start address and an end address, and it can also have some excluded addresses that are not available for lease. A DHCP scope can have various options, such as subnet mask, default gateway, DNS server, etc., that are applied to the DHCP clients along with the IP address. A DHCP scope also has a lease time, which is the duration that a DHCP client can use an IP address before renewing it or releasing it. A DHCP scope can have reservations, which are fixed IP addresses that are assigned to specific DHCP clients based on their MAC addresses12

If a DHCP scope is full, it means that there are no more IP addresses available for lease in the scope.

This can happen if the number of DHCP clients exceeds the number of IP addresses in the scope, or if the lease time is too long and the IP addresses are not released or reused frequently enough. If a DHCP scope is full, any new or existing DHCP clients that request an IP address from the DHCP server will not receive one, and they will not be able to access the network or the internet12

In this scenario, users are able to connect to the wireless network, but they are unable to access the internet. The network administrator verifies connectivity to all network devices, and there are no ISP outages. The server administrator removes the old address leases from the active leases pool, which allows users to access the internet. This indicates that the DHCP scope is full, and that removing the old leases frees up some IP addresses for lease in the scope. Therefore, option B is the most likely cause of the internet issue.

The RAID level that should be implemented to maximize usable capacity without requiring redundancy is RAID 0. RAID (Redundant Array of Independent Disks) is a technology that combines multiple physical disks into a logical unit that provides improved performance, reliability, or both.

RAID 0 is a RAID level that splits data evenly across two or more disks without parity or mirroring.

RAID 0 does not provide any redundancy or fault tolerance, but it increases usable capacity and performance by allowing parallel read and write operations.

Reference: CompTIA Server+ SK0-005 Certification Study Guide, Chapter 1, Lesson 1.2, Objective 1.2

The port that should be disabled on the firewall is port 3389. Port 3389 is used by Remote Desktop Protocol (RDP), which is a protocol that allows remote access and control of a Windows system through a graphical user interface. RDP can pose a security risk if it is not properly configured or secured, as it can expose the system to unauthorized or malicious access from external sources.

Therefore, port 3389 should be disabled on the firewall unless it is needed for legitimate purposes.

Reference: CompTIA Server+ SK0-005 Certification Study Guide, Chapter 3, Lesson 3.3, Objective 3.3

The port that must remain open for a secure website is port 443. Port 443 is used by Hypertext Transfer Protocol Secure (HTTPS), which is an extension of HTTP that encrypts and authenticates the communication between a web server and a web browser. HTTPS ensures that the data transmitted over the web is protected from eavesdropping, tampering, or spoofing. Therefore, port 443 must remain open for a secure website to function properly.

Reference: CompTIA Server+ SK0-005 Certification Study Guide, Chapter 2, Lesson 2.2, Objective 2.2

A method of application hardening is installing the latest patches. Application hardening is a process of reducing the attack surface and vulnerabilities of an application by applying security measures and best practices. Installing the latest patches is one way to harden an application, as patches are updates that fix bugs, errors, or security issues in an application. By installing the latest patches, an application can be protected from known exploits or threats.

Reference: CompTIA Server+ SK0-005 Certification Study Guide, Chapter 3, Lesson 3.5, Objective 3.5

The first thing that the administrator should check is the network cable. The network cable is a physical medium that connects a server to a switch or other network device. The network cable can affect the speed and quality of the network connection, depending on its type, length, and condition.

If the network cable is damaged, faulty, or incompatible, it can cause the server to connect at a lower speed than expected. Therefore, the administrator should check the network cable for any signs of wear, tear, or mismatch, and replace it if necessary.

Reference: CompTIA Server+ SK0-005 Certification Study Guide, Chapter 2, Lesson 2.1, Objective 2.1

The storage type that will yield the fastest database read performance is SSD. SSD (Solid State Drive) is a type of storage device that uses flash memory to store dat a. SSDs have no moving parts and can access data faster than traditional hard disk drives (HDDs) that use spinning platters and magnetic heads. SSDs are especially suitable for databases that are mainly used for archival lookups, as they can provide faster response times and lower latency for read operations.

Reference: CompTIA Server+ SK0-005 Certification Study Guide, Chapter 1, Lesson 1.2, Objective 1.2

An action that the administrator should take to harden the hardware of a new server is to set a BIOS password. BIOS (Basic Input/Output System) is a firmware that initializes the hardware components and settings of a system before loading the operating system. BIOS password is a security feature that requires a user to enter a password before accessing or modifying the BIOS settings or booting up the system. By setting a BIOS password, the administrator can prevent unauthorized or malicious users from changing the hardware configuration or boot order of the server.

Reference: CompTIA Server+ SK0-005 Certification Study Guide, Chapter 5, Lesson 5.1, Objective 5.1

The most likely cause of the issue is that the server has not been joined to the domain. A domain is a logical group of computers and devices that share a common directory service and security policy. A domain controller is a server that manages the domain and authenticates users and computers that want to access domain resources. To log on with domain credentials, a server must be joined to the domain and registered in the directory service. If a server has not been joined to the domain, it will not be recognized or authorized by the domain controller.

Reference: CompTIA Server+ SK0-005 Certification Study Guide, Chapter 4, Lesson 4.3, Objective 4.3