CompTIA Network+ Notes

By: Raul Pop | Related Course: CompTIA Network+
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Module 1.1 - OSI and TCP/IP Models (Click to View Notes)

Layer 2 -Data link-Access-Transfer From Point->Point+MAC Address-Package bits/Data into frames-Need to map this Point->Point [view]


Module 2.3 (Click to View Notes)

Options(DNS,Suffixes)-Options are coded values-Provide Network settings:050-IP Address051-Lease Time006-DNS Servers003-Default Gateway001-Subnet mask015-Domain Name(suffix) [view]


Module 2.4 (Click to View Notes)

1)Interference-from objects/signal interfacesignal going in/outintermittent connectivty -connectingcloser to WAPmove WAP Higher/more centralizedDifferent Antenna5 Ghz FrequencyCheck for interference w/ softwareAdd access points 2) Signal Strength-T [view]


Module 2.5 (Click to View Notes)

1) Wrong Subnet mask-Subnet indicates net portion vs host-Can throw off an addressing scheme-Check CIDR Notation 2) Wrong Gateway-Device sends packets for other nets-Typically Router-Routers only address direct packets 3) Duplicate IP Address-Windo [view]


Module 1.2 - Devices & Protocols in Relation to OSI Model (Click to View Notes)

Layer 1 -Physical-touch,measure,see Layer 2-Data link-provide the point to point connectivity Layer 3-Network-IP Addressing/Routing Layer 4-Transport-TCP/UDP Layer 5-Session-Connection Management Layer 6-Presentation-Formatting data Layer 7-App [view]


Module 1.3 (Click to View Notes)

Multicast-IPv4: Sending 1->Many-IPv6 : 1->1 Many(Multicast groups,to replace broadcast) Unicast :-IPv4 1=>1-IPv6 Link Local,Site Local,Unique Local,Global Unicast Broadcast/Anycast:IPv4:Broadcast to all in Broadcast DomainIPv6: Anycast=> [view]


Module 1.4 (Click to View Notes)

Routing Metrics-Qualities used to determine best path+Hop Count=>Trace Router+MTM-Maximum transmission unit+Lasts-Realibility,foundtrip,etc+Latency-amount of delay on this link Linkstate/Distance vector/Hybrid Link state-$$ last based-Multiple f [view]


Module 1.5 and 1.6 (Click to View Notes)

a) SIP-5060-Session Initiation Protocol-Initiates a session but no data-Indicates to remote computer to open port for communication b) RTP-varies depending on customization-Real Time Protocol-Stream Video,Audio-Detects out of Segment Arrival Used f [view]


Module 1.7 (Click to View Notes)

A-Address Record(forward lookups)sales.microsoft.local=192.168.1.17AAAA-IPv6 Address Recordsales.microsoft.local=IPv6 AddressCNAME-Canonical Namesales.microsoft.local(and fake sales.microsoftt.local)MX-Mail ExchangeMail server for the domain.PTR-Poin [view]


Module 1.8 (Click to View Notes)

Documents findings actions outcomes-Should be documenting from startsymptomscausestroubleshootingdiscovered issueresolution-Write documentation clearly-Avoid skipping steps/slang or acronyms [view]


Module 1.9 (Click to View Notes)

Network as a service a) Offsite Network-just need a computer,link to ISP and Naas-Hosts apps,data,services etc. Pros-Less management-Business continuity/backups-Powerfull resources for less $$-Scalable Cons-Less Control/Security Conceps-Does cost- [view]


Module 2.1 (Click to View Notes)

1) Managed-additional control of data flow/configurations-web interface/special cable 2) Unmanaged-Plug and Play-No additional functionality-Managed switch may have a button 3) Interface Configuration-Full Duplex-Both Directions-Half Duplex-One at [view]


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