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CompTIA A+ Certification Core 2 (220-1102) - Telnet and SSH
The Telnet and SSH protocols enable techs to access and control hosts remotely using the command-line interface in Windows. Telnet offers no security. SSH connections are encrypted for better security. This clip is from the chapter "The...
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CompTIA A+ Certification Core 2 (220-1102) - Troubleshooting Wireless Connections
There are few worse feelings than a wireless connection that just doesn't…connect. In situations like this, good tech will have the right tools and skills to diagnose and repair the issue. This clip is from the chapter "Wireless...
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CompTIA A+ Certification Core 2 (220-1102) - Enterprise Wireless
There's a big difference between the 80 2.11 networks in your home and small office vs. 802.11 in larger organizations such as businesses, schools, and government offices. Multiple SSIDS, advanced technologies, and more aggressive...
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CompTIA A+ Certification Core 2 (220-1102) - Connecting to a Wi-Fi Network
The best 80 2.11 network is useless unless your users can connect to it. Smartphones, desktops, IoT devices, and other networked gizmos need to be individually configured to access your 802.11 networks. This clip is from the chapter...
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CompTIA A+ Certification Core 2 (220-1102) - Wireless Encryption
Everything on an unencrypted (open) wireless network is easily intercepted by anyone with the right capture tools. Over the years, 80 2.11 has developed three different encryption standards, each with its own idiosyncrasies, strengths,...
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CompTIA A+ Certification Core 2 (220-1102) - Basic WAP Setup
The standard wireless access point (WAP) doesn't just work out of the box. It's important to understand how to perform a basic setup for a WAP to make sure it operates properly in your network. This clip is from the chapter "Wireless...
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CompTIA A+ Certification Core 2 (220-1102) - Virtual LANs (VLANs)
Virtual LANs (VLANs) are common features built into almost all switches. VLANs provide superb control of your LAN but have their own quirks that a good tech understands. This clip is from the chapter "Local Area Networking" of the series...
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CompTIA A+ Certification Core 2 (220-1102) - Advanced Router Configuration
Even the most basic router has settings beyond the basic setup. Protocols such as Quality of Service (QoS), Universal Plug and Play (UPnP), and Simple Network Management Protocol (SNMP) give extra features to enhance the capabilities of...
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CompTIA A+ Certification Core 2 (220-1102) - Port Forwarding
NAT is a handy tool but comes with a huge drawback: no servers behind the firewall are accessible to the outside world. Port forwarding allows opening specific ports on your NAT-enabled router to provide access to servers behind it. This...
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CompTIA A+ Certification Core 2 (220-1102) - Windows Firewall
Like all operating systems, Windows comes with a built-in software firewall. Unlike the firewall on your router, this firewall only protects a single system. It's important for techs – and the users they support – to understand how to...
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CompTIA A+ Certification Core 2 (220-1102) - Firewall Configuration
Setting up a hardware firewall is an obvious first step to making sure your network is protected. Even the most basic router has several different types of firewall settings – without proper configuration, you will either leave your...
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CompTIA A+ Certification Core 2 (220-1102) - Basic Router Configuration
All routers share some basic configuration steps every tech must know. From router passwords to LAN IDs, this is the place to learn about these settings. This clip is from the chapter "Local Area Networking" of the series "CompTIA A+...
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CompTIA A+ Certification Core 2 (220-1102) - Routers
The CompTIA A+ exams challenge test takers to perform many configurations of a typical home router. But what does a router do for a SOHO network? This clip is from the chapter "Local Area Networking" of the series "CompTIA A+...
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CompTIA A+ Certification Core 2 (220-1102) - The net Command
The Windows net command has so many features that it deserves its own video. We use the net command for everything—from querying the network to accessing shares. This clip is from the chapter "Local Area Networking" of the series...
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CompTIA A+ Certification Core 2 (220-1102) - Windows Sharing with macOS and Linux
Both macOS and Linux systems know how to use Windows naming functions to connect using Workgroups and Domains and share resources using Samba. The trick is to understand how they do it and to configure them to work with an existing...
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CompTIA A+ Certification Core 2 (220-1102) - Working with Active Directory
More advanced Windows networks use Active Directory Domains instead of Workgroups. These Domains, especially Microsoft's Active Directory-enabled Domains, provide powerful services for larger networks. This clip is from the chapter...
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CompTIA A+ Certification Core 2 (220-1102) - Working with Workgroups
Microsoft developed the concept of Workgroups for small networks to work with their naming system. Workgroups are simple and provide no security, but they're a part of every small Windows network. This clip is from the chapter "Local...
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CompTIA A+ Certification Core 2 (220-1102) - Windows Naming
Microsoft introduced a series of naming protocols, some of which predate the Internet. Interestingly, these protocols (or at least their modern versions) are still alive and well not only on Windows systems but on Linux and macOS systems...
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CompTIA A+ Certification Core 2 (220-1102) - Working with DNS
When a user complains the Internet is down, what's often happening is that DNS isn't working. There are a few simple tools and procedures to diagnose and repair DNS problems. This clip is from the chapter "Local Area Networking" of the...
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CompTIA A+ Certification Core 2 (220-1102) - Understanding DNS
Individual hosts use IP addresses, but humans are terrible at memorizing long strings of numbers. To make our lives easier, most TCP/IP networks (and certainly the Internet) use the Domain Name System (DNS) to apply more human-friendly...
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CompTIA A+ Certification Core 2 (220-1102) - Working with Connections
When two computers begin the process of sharing data, they create what we call a connection (or session). A good tech knows how to use common utilities to observe these connections and diagnose issues. This clip is from the chapter...
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CompTIA A+ Certification Core 2 (220-1102) - Dynamic IP Addressing
Manually entering IP addresses into all our devices is an administrative nightmare. To avoid this mess, smart techs use the Dynamic Host Configuration Protocol (DHCP) to automatically provide IP addresses to individual hosts. This clip...
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CompTIA A+ Certification Core 2 (220-1102) - Network Address Translation (NAT)
You'd be hard-pressed to find a home or small office router that isn't using Network Address Translation (NAT). NAT provides some amazing benefits but also has some serious limitations. This clip is from the chapter "Local Area...
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CompTIA A+ Certification Core 2 (220-1102) - Special IP Addresses
The designers of IP addresses reserved many IP addresses for special uses. From loopback to private IP addresses, a good tech understands these special addresses as well as when and how to use them. This clip is from the chapter "Local...