Network Hardware

Question 1

B Router

Answer 1

B router means Bridge router. To provide communication between two or more different network like computer to computer or computer to internet, B Router is used.

Question 2

Gateway Vs. Router

Answer 2

Gateway works on different network architecture and router works on same network architecture.

Question 3

What Components Are Needed To Set Up A Basic Home Network

Answer 3

o Router/Hub,
o LAN cards and
o LAN cables.

Question 4

Lights On A Modem/LAN Card

Answer 4

Power light – indicates if the power is on.
Link light – indicates if the modem is receiving broadband or Internet signals from the ISP.
Data light – indicates if the Internet is working.
Connectivity light – indicates if the modem is connected to a computer.

Question 5

Commonly Used Lan Cables

Answer 5

There are mainly two types:
Cat 5 (Category 5 where 5 indicates twists per inch) & Cat 5e (5e indicates 5 twists per inch per pair which leads to reduced cross talk). Both Cat 5 & 5e are UTP cables that can support up to 100 Mbps.
Cat 6 & 6e are UTP cables that can support up to 1 Gbps.
After about 80 meters (260 feet), you will usually see a reduction in speed.

Question 6

Differences Among Router, Switch And Hub?

Answer 6

Hub (layer 1 Device):

Hubs, also known as repeaters, are network devices that can operate on layer-1 (I.e. the physical layer) to connect network devices for communication.
A common connection point for devices in a network (Physical Layer-Layer1). When a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

Switch (layer 2 Device)::

Switches are network devices that operate on layer-2 of OSI model of communication.
Switches are also known as intelligent hubs.

In networks, a device that filters and forwards packets between LAN segments. Switches operate at the data link layer (layer 2) and sometimes the network layer(layer 3) of the OSI Reference Model .

Router (layer 3 Device):

Routers are the network devices that operate at Layer-3 of OSI model of communication.
As layer-3 protocols have access to logical address (IP addresses) so routers have the capability to forward data across networks.
Sometimes routers are also known as layer-3 switches.

Question 7

Types Of LAN

Cables Used?

Answer 7

Straight Cable

Cross Cable

Question 8

Cross Cable

Answer 8

Its used to connect same type of devices without using a switch/hub so that they can communicate.

Question 9

Crimping Types & Colour Coding?

Answer 9

1.Straight Crimping : Communication bw the Difference Devices
Ex.( System To Switch & Switch to System or Modem)
2.Cross Crimping : Communication bw the same Devices
Ex.( System To system & Switch to switch)
Straight:
Orange white orange Orange white orange
Green white blue Green white blue
Blue white green Blue white green
Brown white Brown Brown white Brown
Crosss:
Orange white orange Green white Green
Green white blue Orange white blue
Blue white green Blue white Orange
Brown white Brown Brown white Brown