LAN Flashcards
Host ?
Send and receive use traffic
Most end devices
Has IP address
Peripheral?
Don’t communicate directly on the network, Rely on Host
Network Device ?
Connects other devices mainly host
Network Media?
Provide connection between the host and the network device.
Network interface card ? (NIC)
Connect devices to network
Parts of IP configuration?
IP address
Subnet Mask
Default Gateway
DNS (Domains Name System)
Translates Domain name to IP Address
Dynamic Host Configuration Protocal (DHCP)
It enables device to request an address from pool of address that can be assigned by DHCP.
Criteria for Network Media ?
Max Distance
Environment where media will be installed
Amount of data & Speed of transmission
Cost of media and installation
Twisted Pair Cables ?
Wired pair copper cable
Inexpensive and readily available
Disadvantages of Twisted Pairs ?
Electromagnetic Interested (EMI) can affect throughput Crosstalk occurs coz of long length Cables
Types of Twisted Pairs ?
Un Shielded twisted Pairs(UTP)
Shielded Twisted Pairs (STP)
Unshielded Twisted Pairs ?
Inexpensive
High Bandwidth
Easy to install
Unshielded Twisted Pairs used in ?
Workstation
Host and network devices
Most common Unshielded Twisted Pairs ?
4 pair and has specific colours
Shielded Twisted Pairs ?
Use EMI and RFI
Very expensive
Not flexible
Difficult to work with
Co- axial Cable ?
Transmits Electrical Signal Has better shielding Carry more Data Made of Copper / aluminium Harder to install More expensive Difficult to troubleshoot
Fibre optic Cable ?
Transmits Pulse of light
Used in enterprise and large data centre
Made is glass / Plastic
Suitable for place where there is interference
How Fibre optic transmits data ?
One cable is used to send data
Other is used to receive data
Parts of fibre Optic
Jacket Strength Material Buffer Cladding Core
Jacket ?
To prevent abrasion and Moisture
Strengthen Material ?
Prevents cable from Stretching
Buffer ?
Shield the core and Cladding from damage
Cladding ?
Acts as a mirror to reflect light back to core
Core ?
Light transmission element at the centre
Made of glass / silica
Two widely used Twisted Pairs scheme ?
T568A & T568B
Wiring schene defines ?
Pin out
Order of wire connection
Like device ?
Devices that use same pins and use crossover yo revers the order
What command is used to test end - end connectivity ?
Ping Command
What command is used to trace the path ?
Traceroute Command - Cisco interface
Tracert - Windows
What is Hop?
Each individual network throught which data travels
