Ports 20 and 21 correct answers File Transfer Protocol (FTP)
Port 22 correct answers SSH (Secure Shell)
Port 23 correct answers Telnet
Port 25 correct answers Simple Mail Transfer Protocol (SMTP)
Port 53 correct answers DNS (Domain Name System)
Ports 67 & 68 correct answers Dynamic H...
Port 389 correct answers Lightweight Directory Access Protocol (LDAP)
Port 443 correct answers HTTPS (Hypertext Transfer Protocol Secure)
Port 445 correct answers SMB (Server Message Block) or CIFS (Common Internet File System).
Server Message Block (SMB), one version of which was also known as Common Internet File
System (CIFS), is a communication protocol for providing shared access to files, printers, and
serial ports between nodes on a network. It also provides an authenticated inter-process
communication mechanism. Most usage of SMB involves computers running Microsoft
Windows, where it was known as "Microsoft Windows Network" before the introduction of
Active Directory. Corresponding Windows services are LAN Manager Server for the server
component, and LAN Manager Workstation for the client component.[4]
Port 427 correct answers SLP (Service Location Protocol)
SLP is used by devices to announce services on a local network. Each service must have a URL
that is used to locate the service. Additionally it may have an unlimited number of name/value
pairs, called attributes. Each device must always be in one or more scopes. Scopes are simple
, strings and are used to group services, comparable to the network neighborhood in other systems.
A device cannot see services that are in different scopes.
Port 548 correct answers AFP (Apple Filing Protocol)
The Apple Filing Protocol (AFP), formerly AppleTalk Filing Protocol, is a proprietary network
protocol, and part of the Apple File Service (AFS), that offers file services for macOS and the
classic Mac OS. In macOS, AFP is one of several file services supported, with others including
Server Message Block (SMB), Network File System (NFS), File Transfer Protocol (FTP), and
WebDAV. AFP currently supports Unicode file names, POSIX and access control list
permissions, resource forks, named extended attributes, and advanced file locking. In Mac OS 9
and earlier, AFP was the primary protocol for file services.
Port 3389 correct answers RDP (Remote Desktop Protocol)
802.11a correct answers Wireless networking standard that operates in the 5-GHz band with a
theoretical maximum throughput of 54 Mbps.
802.11b correct answers Wireless networking standard that operates in the 2.4-GHz band with a
theoretical maximum throughput of 11 Mbps.
802.11g correct answers Wireless networking standard that operates in the 2.4-GHz band with a
theoretical maximum throughput of 54 Mbps and is backward compatible with 802.11b.
802.11n correct answers Wireless networking standard that can operate in both the 2.4-GHz and
5-GHz bands and uses multiple in/multiple out (MIMO) to achieve a theoretical maximum
throughput of 100+ Mbps. Allows a single wireless AP to use multiple antennas to use multiple
channels. Also known as Wifi 4.
802.11ac correct answers Wireless networking standard that operates in the 5-GHz band and uses
multiple in/multiple out (MIMO) and multi-user MIMO (MU-MIMO) to achieve a theoretical
maximum throughput of 1 Gbps. It has a 2.4 GHz radio just for backwards compatibility. You
need 802.11ac wireless NICs in order to get the benefits. Also known as WiFi 5.
RAID-0 (Disk Striping) correct answers Takes the contents of files and spread them in roughly
even parts across all drives in the RAID array. Also known as disk striping, RAID 0 allows the
CPU to read and write simultaneously on different drives, improving performance. It works with
two or more disks, and the total space is equal to the sum of all drives in the array, but it does not
include any fault tolerance. In fact, since the failure of one RAID 0 drive will lose all data in the
array, larger RAID 0 arrays are even less fault tolerant than smaller ones.
RAID 1 (mirroring) correct answers Writes identical data to two or more hard drives, also known
as disk mirroring. You need at least 2 hard drives to configure a RAID 1 array. Read
performance is improved slightly due to the fact that any free drive in the array can provide the
CPU with the data it requests. Write performance is slower as the CPU has to write the data to
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