Your manager asks you to set up a secure network connection at a remote site to move over some backups. Which protocol would you use? IP SSH SFTP FTP DHCP You’re installing two new hard drives into your network attached storage device. Your director asks that they be put into a RAID solution that offers redundancy over performance Which would you use? RAID 0 RAID 1 RAID 5 RAID RAID 10 QUESTION 10/15 A user is unable to reach Google.com by typing the URL in the web browser but is able to reach it by typing in 172 2173.110. What is the cause? Google.com is down The DHCP server isn’t functioning properly The workstation doesn’t have internet connectivity Google.com is being blocked by the company The workstation is unable to resolve the domain name to the IP address
The correct answer and explanation is:
Question 1: Secure Network Connection for Moving Backups
Correct Answer: SFTP
Explanation:
SFTP (Secure File Transfer Protocol) is the best choice for securely transferring files over a network, including backups. SFTP operates over the SSH (Secure Shell) protocol, providing a secure channel for data transfer. It encrypts both the authentication information and the data being transferred, ensuring confidentiality and protection from interception during transmission. Unlike FTP, which is not secure by itself, SFTP mitigates the risks of data leakage and unauthorized access.
Other protocols like FTP are not secure as they transmit data in plaintext. DHCP (Dynamic Host Configuration Protocol) is unrelated to file transfers and is used for assigning IP addresses to devices on a network. IP itself is a transport protocol but lacks the file transfer functionality and security features needed for this task. Therefore, SFTP is the optimal choice for securely moving backups over a network.
Question 2: RAID Solution for Redundancy
Correct Answer: RAID 1
Explanation:
RAID 1, also known as mirroring, is designed to provide redundancy rather than performance. In RAID 1, data is written identically to two or more drives. If one drive fails, the other drive(s) contain an exact copy of the data, ensuring no loss. This setup prioritizes data protection and availability over speed or storage efficiency.
RAID 0 offers no redundancy and focuses solely on performance by striping data across multiple drives. RAID 5 requires a minimum of three drives and provides a balance of redundancy and performance, but it is less suitable for a two-drive setup. RAID 10 combines striping and mirroring but requires at least four drives. In this scenario, RAID 1 is the best choice to meet the requirement for redundancy with only two drives.
Question 3: User Cannot Reach Google.com via URL
Correct Answer: The workstation is unable to resolve the domain name to the IP address.
Explanation:
The issue is related to DNS (Domain Name System) resolution. DNS translates human-readable domain names, such as google.com, into IP addresses like 172.217.3.110. If the user can access the website by typing the IP address but not the URL, it indicates that the DNS resolution process is failing. Possible causes include:
- Incorrect DNS Settings: The workstation may have incorrect or unreachable DNS servers configured.
- DNS Server Issues: The DNS server being used might be down or misconfigured.
- Network Configuration Errors: Firewalls or security settings could block DNS traffic.
- Local DNS Cache Problems: Corrupt or outdated DNS cache on the workstation could also cause this issue.
To resolve the problem, verify that the workstation’s DNS server settings are correct, clear the DNS cache using the ipconfig /flushdns command, and ensure that DNS traffic is not blocked by firewalls.