RG11 coaxial cable with quad shielding is designed to handle large volumes of internet traffic, providing excellent resistance to interference and high bandwidth capacity. Why Not A (USB 3.1): USB 3.1 is used for connecting peripherals, not for high-volume internet traffic. Why Not C (SATA3.0): SATA is used for internal data storage connections, not for network traffic. Why Not D (Unshielded plenum RJ45): While RJ45 cables are commonly used, unshielded cables are prone to interference and are not ideal for high-volume traffic. CompTIA A+ Exam Reference: Core 1 (220-1101), Section 3.1, cable types and their characteristics.
Configuring scanning to a Secure Message Block (SMB) share specifically designated for executive access ensures that the scanned confidential documents are stored securely on a network drive with restricted access. SMB is a network file sharing protocol that allows applications on a computer to read and write to files and request services from server programs in a computer network. By setting up an SMB share with executive access, the data is centralized, making it easier to manage permissions and security settings. This method also utilizes the existing network infrastructure, allowing for scalability and integration with other security measures like encryption and authentication protocols. References: * CompTIA A+ Certification Exam Core 1 and Core 2 Objectives Documents
The user should check the display settings on the computer and set them to extend/duplicate. This will allow the computer to send the video signal to both the laptop screen and the projector. If the display settings are set to only show on one screen, then the projector may not detect any source. According to the CompTIA Core1 objectives, one of the common display issues is no image on screen. A troubleshooting guide for projectors also suggests checking the display settings as a possible solution for no source found error.
A hypervisor is a software layer that manages and allocates resources for virtual machines (VMs) on a physical host machine. A technician can use a hypervisor to adjust the resource allocation for a virtual workstation, such as increasing the amount of RAM assigned to it from the available pool of memory on the host machine. This can improve the performance and functionality of the virtual workstation without requiring any hardware changes or modifications. Reference: https://www.comptia.org/training/books/a-core- 1-220-1101-study-guide (page 59)
220-1101J 試験問題 30
DNS サーバーと DHCP サーバーの違いを説明しているのは次のうちどれですか?
正解: A
DNS stands for Domain Name System, and it is a network service that translates human-readable names (such as www.google.com) into numerical IP addresses (such as 172.217.14.206) that identify the location of the web servers on the internet. DNS also allows reverse lookup, which means finding the domain name associated with a given IP address. DNS servers are responsible for maintaining a database of domain names and their corresponding IP addresses, and responding to queries from clients who want to resolve a name to an address or vice versa12. DHCP stands for Dynamic Host Configuration Protocol, and it is a network service that automatically assigns IP addresses and other network configuration parameters (such as subnet mask, default gateway, DNS server, etc.) to devices that join a network. DHCP servers are responsible for managing a pool of IP addresses and leasing them to clients for a specified duration. DHCP servers also renew or release the IP addresses when the lease expires or the client disconnects from the network34. The difference between DNS and DHCP is that DNS is used for address translation, which means converting domain names to IP addresses and vice versa, while DHCP is used for IP address assignment, which means providing IP addresses and other network settings to devices that need to communicate on a network. References: * DNS Configuration - CompTIA A+ 220-1101 - 2.6 * DHCP Configuration - CompTIA A+ 220-1101 - 2.6 - Professor Messer IT Certification Training Courses * CompTIA A+ 220-1101 - 2.6 - Professor Messer IT Certification ... * Courses for CompTIA A+: 220-1101: CompTIA A+ (Core 1) - Skillsoft