Ethernet Fundamentals

Question 1

10BASE-T

Answer 1

• allows up to 10Mbps of speed but only covers a distance of up to 100 meters

Question 2

CSMA/CD

Answer 2

Carrier Sense Multiple Access with Collision Detection
Prevents collisions by using carrier-sensing to defer transmissions until no other stations are transmitting

Question 3

Ethernet Switch

Answer 3

Increases scalability of a network by creating multiple collision domains

Question 4

Bandwidth

Answer 4

Measures how many bits the network can transmit per second

Question 5

Link Aggregation(IEEE 802.3ad)

Answer 5

Combines multiple physical connections into as single logical connection to minimize or prevent congestion

Question 6

Power Over Ethernet (PoE 802.3af PoE+ 802.3at)

Answer 6

Supplies electrical power over ethernet and requires CAT 5 or higher copper cable

Question 7

Port Monitoring or Mirroring

Answer 7

Makes a copy of all traffic destined for a port and sends it to another port

Question 8

User Authentication(802.1x)

Answer 8

Requires users to authenticate themselves before gaining access to the network

Question 9

Console Port

Answer 9

• Allows for local administration of the switch using a separate laptop and a rollover cable (DB-9 to RJ-45)

Question 10

Out-of-Band(OOB) Management

Answer 10

• Keeps all network configuration devices on a separate network

Question 11

First-Hop Redundancy

Answer 11

• Uses Hot Standby Router Protocol (HSRP) to create virtual IP and MAC addresses to provide active and standby routers

Question 12

802.1d

Answer 12

redundant links between different switches, and prevent loops in network traffic

Question 13

Virtual Local Area Network (VLAN)

Answer 13

Allows different logical networks to share the same physical hardware and provides added security and efficiency

Question 14

Virtual Private Network (VPN)

Answer 14

Creates a secure VPN or virtual tunnel over an untrusted network like the internet

Question 15

VPN Concentrator

Answer 15

Terminates VPN tunnels and allows for multiple VPN connections in one location

Question 16

VPN Headend

Answer 16

A specific type of VPN concentrator used to terminate IPSec VPN tunnels within a router or other device

Question 17

Proxy Server

Answer 17

A specialized device that makes request to an external network on behalf of a client

Question 18

VoIP Phone

Answer 18

A hardware device that connects to your IP network to make a connection to a call manager withing your network