2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
As an example of NAT, suppose your workstation has an IP address of 10.10.20.10 and it wants to communicate with a website at IP 74.125.236.195. The traffic has a source…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
LAN stands for Local Area Network. A LAN consists of a group of devices in the same broadcast domain. For example all devices on one switch would belong to one…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
One type of Virtual Private Network (VPN) is one that takes advantage of SSL (Secure Socket Layer). SSL VPNs use protocol TCP 443, which helps to avoid running into firewall…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
The default gateway is the IP address of a router on your local subnet. If a default gateway is not configured your device wont be able to communicate outside of…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
The subnet mask identifies your network ID. If you want to know what subnet a host is on, you’d refer to the subnet mask. The subnet mask masks (or blocks)…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
IPv4 The IPv4 address space is maintained by a non profit organization call the Internet Assigned Number Authority (IANA). IPv4 is the primary protocol for everything we do today. IPv4…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
The CompTIA A+ exam objectives asks you to explain IP addresssing so lets try to break it down for you here. An Internet Protocol (IP) address is the unique identification…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
Legacy systems are really old systems. Companies may still have legacy systems running on their network. Legacy systems may be running important services so you may need to learn about…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
UTM UTM stands for Unified Threat Management. It’s designed to be an all in one security appliance. A UTM is also known as a “next generation firewall” or “web security…
2. Networking (220-1001), Comptia A+ (Plus), Comptia A+ (Plus) 220-1001
Web server A web server responds to browser requests using standard web browsing protocols of HTML or HTML5. Web pages are stored on the server. The browser on your computer…