Professor Messer A+ 220-1201 section 2 — IP, TCP/UDP and ports, wireless, network services, DNS/DHCP/VLAN/VPN, devices, IP addressing, connection types and tools.
Updated Networking
A+ Core 1 · 2
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Code (2nd ed.)Help DeskTryHackMeA+ Core 1The Linux Command LineLearn Windows PowerShellNetworking for Sysadmins
Mobile DevicesLaptop HardwareMobile Device ConnectionsMobile Device AccessoriesMobile Device ManagementNetworkingIntroduction to IPCommon PortsWireless Networking ProtocolsNetwork ServicesDomain Name System (DNS)Dynamic Host Configuration Protocol (DHCP)VLANs and VPNsNetwork DevicesIPv4 and IPv6Assigning IP AddressesInternet Connection TypesNetwork ToolsDisplay TypesDisplay AttributesNetwork Cables568A and 568B ColoursOptical FibrePeripheral CablesVideo CablesStorage CablesAdapters and ConvertersCopper ConnectorsFiber ConnectorsAn Overview of MemoryMemory TechnologiesStorage DevicesRAIDComputer PowerMotherboard Form FactorsMotherboard Expansion SlotsMotherboard ConnectionsMotherboard CompatibilityThe BIOSBIOS SettingsHSM and TPMCPU FeaturesExpansion CardsCoolingMultifunction DevicesLaser Printer MaintenanceInkjet PrintersInkjet Printer MaintenanceThermal PrintersThermal Printer MaintenanceImpact PrintersImpact Printer Maintenance
Professor Messer A+ 220-1201 networking primer — encapsulation, TCP vs UDP, multiplexing, IP addresses, well-known vs ephemeral ports, reading a protocol decode.
Updated Introduction to IP
Professor Messer A+ 220-1201 objective 2.1 — FTP, SSH, Telnet, SMTP, DNS, DHCP, HTTP/HTTPS, POP3, IMAP, SMB/CIFS, NetBIOS, LDAP and RDP port numbers.
Updated Common Ports
Professor Messer A+ 220-1201 objective 2.2 — 802.11/Wi-Fi naming, frequency bands, channels and bandwidth, Bluetooth and ISM, RFID passive/active tags, and NFC.
Updated Wireless Networking Protocols
Professor Messer A+ 220-1201 objective 2.3 — DNS, DHCP, file/print sharing, email, syslog/SIEM, web, AAA, database, NTP, spam gateway, UTM, load balancer, proxy, SCADA/ICS, legacy, embedded and IoT.
Updated Network Services
Professor Messer A+ 220-1201 objective 2.4 — DNS hierarchy and root servers, dig/nslookup, resource records, A/AAAA, CNAME, MX, TXT, DKIM, SPF and DMARC.
Updated Domain Name System (DNS)
Professor Messer A+ 220-1201 objective 2.4 — why DHCP exists, the DORA process with exact packet fields, scopes, pools and exclusions, and DHCP reservations.
Updated Dynamic Host Configuration Protocol (DHCP)
Professor Messer A+ 220-1201 objective 2.4 — broadcast domains, LANs, VLANs and inter-VLAN routing, VPN concentrators, client-to-site vs site-to-site VPN.
Updated VLANs and VPNs
Professor Messer A+ 220-1201 objective 2.5 — routers, managed vs unmanaged switches, access points, patch panels, firewalls, PoE standards, cable/DSL/ONT and NICs.
Updated Network Devices
Professor Messer A+ 220-1201 objective 2.6 — IPv4 octets and binary, RFC 1918 private ranges and NAT, IPv6 hex notation, shortening rules, address types and /64.
Updated IPv4 and IPv6
Professor Messer A+ 220-1201 objective 2.6 — IP address, subnet mask and gateway; static vs dynamic vs DHCP reservation; APIPA range and its ARP check.
Updated Assigning IP Addresses
Professor Messer A+ 220-1201 objective 2.7 — satellite (GEO vs LEO), fibre, cable and DOCSIS, DSL, cellular tethering vs hotspot, and WISPs.
Updated Internet Connection Types
Professor Messer A+ 220-1201 objective 2.8 — crimpers, Wi-Fi and spectrum analysers, tone generator and probe, punch-down tools, cable testers, loopback plugs, taps and SPAN.
Updated Network Tools