Networking Concepts

Question 1

RG59 / RG6

Answer 1

Types of coaxial cable used for television

Question 2

PAN

Answer 2

Network connecting peripherals such as mice, printers, and smart phones to a single host using Bluetooth technology

Question 3

Duplex Multimode LC Connector

Answer 3

Fiber optic connector that accepts both the sending and receiving fibers

Question 4

WAN

Answer 4

Network that is owned by an ISP or corporations covering a wide geographic area

Question 5

Firewall

Answer 5

software or hardware that permits or denies traffic in order to protect data and equipment from unauthorized access

Question 6

WEP / WPA2

Answer 6

Types of encryption used on wireless networks

Question 7

DHCP

Answer 7

Protocol that dynamically assigns IP addresses to hosts

Question 8

IPv6

Answer 8

128-bit address assigned to hosts and represented in hexadecimal format

Question 9

CAT5e / CAT6 / CAT7

Answer 9

Category ratings for twisted-pair cables that specify number of wires and twists and affects distance limitations

Question 10

TCP/UDP Port Number

Answer 10

Predefined numbers that identify commonly used protocols such as FTP, SSH, HTTP, and DNS

Question 11

OSI TCP/IP

Answer 11

Layered reference models that prepare data for transmission

Question 12

MAN

Answer 12

A network that spans a large campus or city and interconnects buildings through wireless or fiber optic backbones

Question 13

Router

Answer 13

A device that connects networks and forwards traffic from hosts to remote networks through the use of IP addresses

Question 14

Repeaters

Answer 14

Devices that regenerate a weak signal to extend the distance that data can travel

Question 15

RJ45

Answer 15

Connector for twisted-pair cables

Question 16

Thicknet/Thinnet

Answer 16

Types of coaxial cable used for networks. Thicknet referred as 10base5 systems, where 10 means 10mbps speed. Base means baseband and 5 denotes 500 meter max, RG-8/U is used as thik cable. Thinnet also referred as 10base2 where 2 denotes 200 m max distance between two nodes or repeaters RG-58/U is used as thin cable

Question 17

PoE

Answer 17

DC current is transferred over Ethernet cable, along with data, to power PoE devices

Question 18

Plenum

Answer 18

Cables with shielding made from a special plastic that retards fire

Question 19

CSMA/CD

Answer 19

Architecture designed to handle collisions by controlling how devices communicate on an Ehternet network

Question 20

T568A / T568B

Answer 20

Wiring standards for twisted-pair cabling

Question 21

LAN

Answer 21

Network covering a small geographic area typically owned by an individual

Question 22

Subnet Mask

Answer 22

32-bit value used with an IPv4 address to indicate network and host components

Question 23

Hub / Bridge /Switch

Answer 23

Intermediary devices used in a LAN to connect hosts and forward data to other devices

Question 24

EMI / RFI

Answer 24

Types of interference that affect the quality of data transmission. EMI (Electromagnetic Interference) also called RFI (Radio Frequency Interference). EMI is actually any frequency of electrical noise, whereas RFI is a disturbance that affects an electrical circuit due to either electromagnetic conduction or electromagnetic radiation emitted from an external source

Question 25

Single-mode / Multi-mode

Answer 25

Classification of fiber cables that signify light source, distance limitations and speed

Question 26

Duplex

Answer 26

Characteristic of media that allows data to flow in both directions at the same time or one direction at a time

Question 27

IPv4

Answer 27

32-bit address assigned to a host and usually represented in dotted decimal format

Question 28

UTP / STP

Answer 28

Unshielded Twisted Pair and Shielded Twisted Pair are cables that are commonly used for cabling local networks.

Question 29

MAC

Answer 29

48-bit address hard coded onto the NIC and usually represented in hexadecimal format

Question 30

Wireless Access Point

Answer 30

A device that connects wireless hosts to the network via the use of radio waves