1.3

Question 1

MAC Address

Answer 1

Physical address of a network adapter

Question 2

How many bits long is a MAC address?

Answer 2

48 bits/6 bytes

Question 3

What are the two parts of a MAC Address?

Answer 3

OUI and NICS

Question 4

OUI

Answer 4

Organizationally Unique Identifier

Question 5

NICS

Answer 5

Network Interface Controller Specific

Question 6

Half Duplex

Answer 6

Cannot send and receive simaltaneously

Question 7

Full Duplex

Answer 7

Can send and receive simaltaneously

Question 8

CSMA/CD

Answer 8

Carrier Sense Multiple Access / Collision Detection

Question 9

CSMA/CA

Answer 9

Carrier Sense Multiple Access / Collision Avoidance

Question 10

ARP request

Answer 10

Address Resolution Protocol request

Question 11

What is an ARP request used for?

Answer 11

Determining MAC address from IP address

Question 12

PDU

Answer 12

Protocol Data Unit

Question 13

MTU

Answer 13

Maximum Transmission Unit

Question 14

What are the 5 states of STP?

Answer 14

Blocking, Listening, Learning, Forwarding, Disabled

Question 15

Dual Stack Routing

Answer 15

Run’s both IPv4 and IPv6 at the same time

Question 16

6to4 Addressing

Answer 16

Sends IPv6 traffic over IPv4 networks and creates the IPv6 address based on the IPv4 address

Question 17

4in6 Addressing

Answer 17

Tunnels IPv4 traffic through IPv6 networks

Question 18

Teredo/Miredo

Answer 18

Tunnels IPv6 traffic through IPv4 networks, and does not need a special IPv6 router

Question 19

What is the difference with Teredo and Miredo?

Answer 19

Teredo is Microsoft proprietay, Meredo is open source

Question 20

NDP

Answer 20

Neighbor Discovery Protocol

Question 21

Packet Shaping (Traffic Shaping)

Answer 21

Controls traffic with bandwidth usage or data rates

Question 22

What does packet shaping allow you to do?

Answer 22

Set important applications to have higher priority than others

Question 23

QoS

Answer 23

Describes the process of controlling traffic flow of a network

Question 24

CoS

Answer 24

Class of Service

Question 25

Where in the OSI model does CoS work in?

Answer 25

Layer 2

Question 26

What is port forwarding used for?

Answer 26

Directing inbound traffic to server/application on the network

Question 27

How is port forwarding acomplished?

Answer 27

An external IP and port number maps to an internal IP and port number but does NOT have to be the same port number

Question 28

ACL

Answer 28

Access Control List

Question 29

What is the function of an ACL?

Answer 29

A packet filter that is used to allow of deny traffic, either incoming or outgoing

Question 30

What criteria can ACL evaluate on?

Answer 30

Source IP, Destination IP, TCP port number, UDP port number, ICMP

Question 31

How does a firewall rule work in an ACL?

Answer 31

Checks or a match logically, from top to bottom. Specific rules at the top, and if no match is found it moves down the list. At the very bottom is an implicit deny so no match=deny

Question 32

Circuit Switching

Answer 32

A circuit is established between endpoints before data passes. No one can use the circuit when idle, and the connection is always there

Question 33

Packet Switching

Answer 33

Groups data into packets to send across a network. Medium is shared, and someone else can use it when you are not