< All CompTIA Cloud+ Notes

tsirhCdneM | CompTIA Cloud+ | Module 3

By: Raul Pop | Related Course: CompTIA Cloud+ | Published: June 8, 2017 | Modified: June 8, 2017
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NotepadNetwork Structure and Configuration

Network Topologies

Network Types

Network Optimization

Network Ports and Protocols

Routing and Switching

 

Network Topologies

-Bus Topology(street-line)

-Ring Topology(each computer has 2 connections in a circle connection)

-Mesh Topology(every computer is connected to every computer)

-Start Topology(center node)

-Tree Topology(hieriracal structure 1-2-4)

 

Multiple LANs make a WAN

 

 

Network Type

-Intranet

-Internet

-Extranet(Perimeter network,DMZ)

 

Intranet 

-private network

-created by an company to host internal resources

-Isolated network

-Protected by firewalls or proxies

 

Internet

-Global networks of interconnected network devices

-Not controlled by any organization

-Networks relying on protocols to send information

-Commercial and private organization by an IP

 

Extranet

-Extension of an intranet

-Allows the organization that created the extranet to share resources outside the intranet

-Owned by the organization that created it

 

 

Network Optimization

-Load balance

-Bandwidth

-Latency

-Compression

-Caching

 

Load Balancing

-Distributes requests across devices

-Used to lightening the load

 

Bandwidth

-Bandwidth is the speed of the netwrok

-10 MB/Sec

-100 MB/Sec

 

Latency

-Latency is the time delay while data is being sent

 

Compression

-Shrinking a file

-ZIP and RAR are common file extensions types

 

Caching

-Allows for a storage of frequently accessed data

-Servers typically have a cash that allows a temporary storage of internet files for quick recall

 

Common Ports

FTP,Telnet,SSH,SMTP,DNS,DHCP,TFTP,HTTP,POP3,HTTPS,NNTP,NTP,IMAP4,SNMP,LDAP,RDP

 

Routing and Switching

-Network Address Translation(NAT)

Allows a network to share one IP in the internet

-Port Address Translation(PAT)

Provides many internal devices mapping of a single internal IP addresses

-Virtual Local Area Network(VLAN)\

Virtual LANs to create a logical separation on a physical network

VLANs are usually created in a switch

-Routing tables

Table that are stored on the router

-Used to route network packets

-Contains information about the internal network and the next hop

 

 


< All CompTIA Cloud+ Notes
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