SK0-005 Exam Dumps : CompTIA Server+ Certification Exam

RAID 5offers bothdisk redundancyandmaximum usable disk capacityby using block-level striping with parity. RAID 5 allows one drive to fail while still retaining data, and it uses only one disk’s worth of space for parity, maximizing the usable capacity.

RAID 5 (Answer C):Provides redundancy with only one disk's space used for parity, maximizing storage.

RAID 0 (Option A):Provides no redundancy; if one drive fails, all data is lost.

RAID 1 (Option B):Mirrors data, so redundancy is provided, but only half the capacity is usable.

RAID 10 (Option D):Combines RAID 1 and 0 for high performance and redundancy but requires half the disk space for mirroring.

CompTIA Server+ Reference:This topic is covered underSK0-005 Objective 1.5: Explain RAID levels and their benefits.

Out-of-band console is a tool that can be used to command a remote shutdown of a physical Linux server. Out-of-band console is a method of accessing a server’s console through a dedicated management port or device that does not rely on the server’s operating system or network connection. Out-of-band console can be used to power cycle, reboot, update firmware, monitor performance, and perform other tasks remotely even if the server is unresponsive or offline. Crash cart is a mobile unit that contains a keyboard, monitor, mouse, and other tools that can be used to troubleshoot a server on-site, but it requires physical access to the server. IP KVM (Internet Protocol Keyboard Video Mouse) switch is a hardware device that allows remote access to multiple servers using a web browser or a client software, but it requires network connectivity and may not work if the SSH connection is lost. RDP (Remote Desktop Protocol) is a protocol that allows remote access to a Windows server’s graphical user interface, but it does not work on Linux servers and requires network connectivity. References:

Port 21 is used for FTP (File Transfer Protocol), which is a protocol that transfers files between servers and clients in cleartext, meaning that anyone can intercept and read the data. To stop this communication, port 21 should be closed on the web server and replaced with a secure protocol, such as SFTP (Secure File Transfer Protocol) or FTPS (File Transfer Protocol Secure), which use encryption to protect the data. Verified References: [FTP vs SFTP vs FTPS]