2.0 Infrastructure

Question 1

what connector would you use with RS-232?

Answer 1

DB-9

Question 2

what is the maximum recommended speed for CAT 6 cable?

Answer 2

10 Gbps

Question 3

what is the maximum distance of a CAT 5e cable run?

Answer 3

100 meters

Question 4

maximum recommended speed for CAT 5e cable?

Answer 4

1000 Mbps

Question 5

what is the line that marks the point where responsibility for a communication link shifts from a telecommunications company to the customer?

Answer 5

Demarc

Question 6

which WAN protocol uses labels to identify paths?

Answer 6

MPLS (multiprotocol label switching)

Question 7

what WAN media has the highest latency?

Answer 7

Satellites

Question 8

what type of multiplexing does and ISDN PRI use?

Answer 8

time division multiplexing

ISDN (integrated services digital network)
PRI (primary rate interface)

Question 9

what WAN protocol uses virtual circuits over private or semi-private lines?

Answer 9

Frame relay

Question 10

what type of information can be sent over a single broadband line?

Answer 10

data, video, and voice

it sends the different types of data on a single line using frequency division multiplexing (FDM)

Question 11

where is a virtual switch used?

Answer 11

in a virtual network

Question 12

what type of storage does a SAN use?

Answer 12

Block-level storage

Question 13

what is a drawback of a SAN when compared to NAS?

Answer 13

It is more expensive and requires more configuration

Question 14

what type of data storage can be accessed over a traditional TCP/IP network?

Answer 14

NAS

Question 15

what is the MTU of a jumbo frame?

Answer 15

Greater than 1,500 bytes but not greater than 9,000 bytes

Question 16

what will raise an alarm about a network attack, while also stopping it?

Answer 16

IPS

Question 17

what will raise an alarm about a network attack, but not necessarily stop it?

Answer 17

IDS

Question 18

what appliance can filter access to objectionable web sites and improve performance of internet access?

Answer 18

Proxy server

Question 19

what appliance would be used to block access to objectionable web sites?

Answer 19

content filter (or proxy server)

some advanced firewalls also include a content filter

Question 20

what appliance would be used to connect two sites together over the internet?

Answer 20

VPN concentrator

Question 21

what appliance is used to ensure multiple servers have an equal amount of traffic?

Answer 21

load balancer

Question 22

what does a load balancer provide?

Answer 22

increased availability and distribution of network requests

Question 23

what device can reduce overall bandwidth usage by serving cached copies of website pages?

Answer 23

Proxy server

Question 24

what can RADIUS provide for an 802.11 network?

Answer 24

centralized authentication

Question 25

what is used to filter traffic based on IP addresses for a network?

Answer 25

Network-based firewall A stateless firewall filtering traffic based on IP addresses (or ports) is configured in an access control list (ACL)

Question 26

what network device is typically placed on the border of a network?

Answer 26

A firewall

Question 27

what type of modem would you use to access the internet via a TV cable?

Answer 27

DOCSIS modem DOCSIS (data over cable service interface specification)

Question 28

what network device is typically used to perform stateful inspection of incoming traffic?

Answer 28

A firewall

Question 29

what type of connector is used with coaxial cable?

Answer 29

BNC

Question 30

what type of connector is used with a phone line?

Answer 30

RJ-11

Question 31

what type of connector is used with RG-6 cable?

Answer 31

F-connector

Question 32

what type of connector is used with twisted pair cable?

Answer 32

RJ-45

Question 33

what type of connectors are used with fiber?

Answer 33

ST, SC, LC, MTRJ

Question 34

what do you use to plug a fiber optic cable into an RJ-45 jack?

Answer 34

Media converter (or transceiver) a small form-factor pluggable (SFP) transceiver is often used on switches

Question 35

what cable type provides the best protection against EMI?

Answer 35

Fiber

Question 36

what type of twisted pair cable protects against EMI?

Answer 36

STP (shielded twisted pair)

Question 37

what type of cable is used by MMF?

Answer 37

Fiber MMF (multimode fiber)

Question 38

what type of cable would be used for 1000BaseLX?

Answer 38

SMF (single mode fiber) note that the LX indicates longer distances and SMF is used for longer distances

Question 39

what type of cable would be used for 1000BaseSX?

Answer 39

MMF Note that the S in SX indicates shorter distances and MMF is used for shorter runs

Question 40

what type of cable would you use to comply with fire codes when running cables under a raised floor?

Answer 40

Plenum-rated

Question 41

what type of fiber connector is round and twists on with a spring-loaded bayonet mount?

Answer 41

ST (standard/straight tip)

Question 42

what type of fiber connector is square and snaps on?

Answer 42

LC

Question 43

what type of connector would you use to connect to a server's serial port?

Answer 43

DB-9

Question 44

what type of cable would you use to connect a computer's NIC to a switch?

Answer 44

A straight-through cable. In general, when auto sensing is not available or not enabled, you would use a straight-through cable for the following connections: PC to Switch. Switch to Router

Question 45

what would you use to connect two older switches together?

Answer 45

A crossover cable. an older switch implies that autosensing is not enabled. when autosensing is not enabled, you would use a crossover cable for the following connections: Switch to Switch. Router to Router. PC to Router