Essentials of Networking

Question 1

Define LAN.

Answer 1

Local Area Network. Computer network within a limited physical area.

Question 2

Define Ethernet.

Answer 2

A system for connecting multiple computer systems to create a LAN.

Question 3

How many bytes make up an ethernet frame?

Answer 3

1500 bytes,

Question 4

What is MAC address?

Answer 4

Media Access Control address. A unquie identifier assigned to every NIC.

Question 5

Define NIC

Answer 5

Network Interface Controller. Equipment that allows communication with a network.

Question 6

How long is a MAC address?

Answer 6

48-bit, 12 characters.

Question 7

Who sets the first 6 characters of a MAC address and what is it refered to as?

Answer 7

OEM ID set by manufacturer.

Question 8

Windows command to find MAC address?

Answer 8

ipconfig /all

under Physical address

Question 9

Linux command to find MAC address?

Answer 9

ifconfig

OR

if

Question 10

What makes up an Ethernet frame?

Answer 10

Destination MAC

Source MAC

DATA BEING SENT

FCS (Frame Check Sequence.)

Question 11

Acronym:

FCS

Answer 11

Frame Check Sequence.

Question 12

How does a network hub send data?

Answer 12

Repeats all data to all devices,

Devices deletes data not for itself.

Question 13

How does a network switch send data?

Answer 13

Rememers MAC addresses for connected devices,

Sends data to only it’s destination.

aka filtering traffic by MAC.

Question 14

What is a network node?

Answer 14

A connected device to a network.

Question 15

Do Hubs or Switches provide full bandwidth to nodes and why?

Answer 15

Switches becuase a hub sends data to every node simultaniously where as a switch only sends data to one node that it’s directed to.

Question 16

How many nodes are switches theoretically limited to?

Answer 16

1024 nodes.

Reality is 20-30

Question 17

Define WAN

Answer 17

Wide Area Network, a network over large geographic area.

Also connects LAN’s together

Question 18

How does a router differentiate between devices and LAN’s?

Answer 18

Logical Addressing, a value designated down by the person who sets up the network.

aka IP Addressing

Question 19

Define Router.

Answer 19

A gateway where LAN’s are connected to become apart of WAN.

Question 20

What is an IP address?

Answer 20

A logical address that can be set for a device. Used to identify a device on a network.

Question 21

In the following IP address which parts designates down to LAN?

192.168.4.100

Answer 21

192.168.4.— specifically the “.4.”

Question 22

In the following IP address which parts designates down to device?

192.168.4.100

Answer 22

The whole address, specifically the “.100”

Question 23

Another name for a router as seen on systems that can view or controll networks?

Answer 23

Default Gateway

Question 24

What type of cable is this?

Answer 24

Coaxial

Question 25

What is RG rating?

Answer 25

Radio Guide rating for coaxial cable.

Question 26

What ratings are Coaxial cable?

Answer 26

RG-58

RG-59

RG-6

Question 27

What type of connector is this and what is it used for?

Answer 27

F-type connecotr for coaxial.

Question 28

What type of connector is this and what is it used for?

Answer 28

BNC Connector used for coaxial

Question 29

What is TP?

Answer 29

Twisted pair cable.

Question 30

What is UTP?

Answer 30

Unshielded Twisted Pair.

Question 31

What type of connector is this and what is it used for?

Answer 31

RJ11 used for telephones.