Professor Messer

VLANs and VPNs- CompTIA A+ 220-1201 – 2.4

We can provide network protection and segmentation through the use of virtual local area networks (VLANs) and virtual private networks (VPNs). In this video, you’ll learn about separating broadcast domains into separate VLANs, and how remote connectivity can be protected through the use of encrypted client-to-site or site-to-site VPNs. << Previous: DHCP Next Video: Network

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What are the differences between the CompTIA A+ 220-1102 Exam and the A+ 220-1202 Exam?

What are the differences between the CompTIA A+ 220-1102 Exam and the A+ 220-1202 Exam? This document was updated on March 30, 2025 The CompTIA A+ certification is one of information technology’s most popular certifications, and it’s common to see the A+ certification requested on many job postings. The A+ certification focuses on fundamental technologies,

What are the differences between the CompTIA A+ 220-1102 Exam and the A+ 220-1202 Exam? Read More »

220-1101 and 220-1201 Differences title graphic

What are the differences between the CompTIA A+ 220-1101 Exam and the A+ 220-1201 Exam?

What are the differences between the CompTIA A+ 220-1101 Exam and the A+ 220-1201 Exam? This document was updated on March 30, 2025 The CompTIA A+ certification is one of information technology’s most popular certifications, and it’s common to see the A+ certification requested on many job postings. The A+ certification focuses on fundamental technologies,

What are the differences between the CompTIA A+ 220-1101 Exam and the A+ 220-1201 Exam? Read More »

DNS Configuration – CompTIA A+ 220-1201 – 2.4

Our DNS servers provide critical name resolution services for nearly every device on the network. In this video, you’ll learn about DNS records for address (A, AAAA), canonical names (CNAME), mail exchanger (MX), text (TXT), Domain Keys Identified Mail (DKIM), Sender Policy Framework (SPF), and Domain-based Message Authentication, Reporting, and Conformance (DMARC). << Previous: Network

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Network Services – CompTIA A+ 220-1201 – 2.3

It takes many different services to keep a network running. In this video, you’ll learn about DNS, DHCP, file sharing, print servers, mail servers, Syslog, web servers, authentication, spam gateways, all-in-one security appliances, load balancers, proxy servers, SCADA, legacy systems, embedded devices, and IoT (Internet of Things). << Previous: Wireless Network Technologies Next Video: DNS

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