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IT Essentials > Chapter 7 > Flashcards

Chapter 7 Flashcards

1
Q

How many devices can a Bluetooth device connect to simultaneously?

A

7

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2
Q

A device has an IPv6 address of 2001:0DB8:75a3:0214:0607:1234:aa10:ba01 /64. What is the host identifier of the device?

A

0607:1234:aa10:ba01

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3
Q

Which layer of the OSI model is responsible for logical addressing and routing?

A

network

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4
Q

What is the correct order of the layers of the TCP/IP model from the top layer to the bottom?

A

application
transport
internet
network access

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5
Q

What TCP/IP model layer is responsible for MAC addressing?

A

Network access

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6
Q

Which two layers of the OSI model correspond to the functions of the TCP/IP model network access layer? (Choose two.)

A

Physical

Data Link

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7
Q

What is identified by the 100 in the 100BASE-TX standard?

A

The maximum bandwidth in Mb/s

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8
Q

Which two characteristics describe Ethernet technology? (Choose two.)

A

It uses CSMA/CD access control method

It is supported by IEEE 802.3 standards

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9
Q

Which IEEE standard operates at wireless frequencies in both the 5 GHz and 2.4 GHz ranges?

A

802.11n

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10
Q

A customer is considering a multipurpose device to create a home network. Which three devices are usually integrated into a multipurpose network device? (Choose three.)

A

Router
Wireless Access Point
Switch

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11
Q

Which network device makes forwarding decisions based on the destination MAC address that is contained in the frame?

A

Switch

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12
Q

Which pairs of wires change termination order between the 568A and 568B standards?

A

green and orange

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13
Q

Which two types of signal interference are reduced more by STP than by UTP? (Choose two.)

A

RFI

EMI

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14
Q

How many host addresses are available on a network with a subnet mask of 255.255.0.0?

A

65,534

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15
Q

What is a characteristic of the UDP protocol?

A

low overhead

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16
Q

types of coaxial cable used for networks

A

thicknet / thinnet

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17
Q

types of coaxial cable used for television

A

RG59 / RG6

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18
Q

wiring standards for twisted-pair cabling

A

T568A / T568B

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19
Q

connector for twisted-pair cables

A

RJ45

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20
Q

types of interference that affect the quality of data transmission

A

EMI / RFI

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21
Q

types of twisted-pair cables that are commonly used for cabling local networks

A

UTP / STP

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22
Q

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

A

CAT5e / CAT6 / CAT7

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23
Q

cables with shielding made from a special plastic that retards fire

A

plenum

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24
Q

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

A

single-mode / multi-mode

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25
Q

fiber connector that accepts both the sending and receiving fibers

A

duplex multimode LC connector

26
Q

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

A

duplex

27
Q

network covering a small geographic area typically owned by an individual

A

LAN

28
Q

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

A

WAN

29
Q

a network connecting peripherals such as mice, printers, and smartphones to a single host, typically using Bluetooth technology

A

PAN

30
Q

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

A

MAN

31
Q

architecture designed to handle collisions by controlling how devices communicate on an Ethernet network

A

CSMA/CD

32
Q

types of encryption used on wireless networks

A

WEP / WPA2

33
Q

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

A

TCP/UDP port numbers

34
Q

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

A

hub / bridge / switch

35
Q

layered reference models that prepare data for transmission

A

OSI / TCP/IP

36
Q

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

A

wireless access point

37
Q

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

A

router

38
Q

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

A

firewall

39
Q

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

A

repeaters

40
Q

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

A

PoE

41
Q

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

A

MAC

42
Q

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

A

IPv4

43
Q

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

A

IPv6

44
Q

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

A

subnet mask

45
Q

protocol that dynamically assigns IP addresses to hosts

A

DHCP

46
Q

Which layer of the OSI model is responsible for logical addressing and routing?

A

transport

47
Q

Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.)

A

presentation
session
application

48
Q

What TCP/IP model layer is responsible for MAC addressing?

A

network access

49
Q

Which two layers of the OSI model correspond to the functions of the TCP/IP model network access layer? (Choose two

A

Physical

Data

50
Q

Which two characteristics describe Ethernet technology? (Choose two.)

A

It uses the CSMA/CD access control method.

It is supported by IEEE 802.3 standards.

51
Q

A customer is considering a multipurpose device to create a home network. Which three devices are usually integrated into a multipurpose network device? (Choose three.)

A

Router
Switch
Wireless Access Point

52
Q

Which network device makes forwarding decisions based on the destination MAC address that is contained in the frame?

A

Switch

53
Q

What device uses IP addresses to forward traffic from one network to other networks?

A

Router

54
Q

Which term describes a type of coaxial cable?

A

RG-6

55
Q

Which pairs of wires change termination order between the 568A and 568B standards?

A

Green and Orange

56
Q

Which two types of signal interference are reduced more by STP than by UTP? (Choose two.)

A

RFI

EMI

57
Q

What is a characteristic of the UDP protocol?

A

Low Overhead

58
Q

Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.)

A

session
presentation
application

59
Q

Which two layers of the OSI model correspond to the functions of the TCP/IP model network access layer? (Choose two.)

A

data link

physical

60
Q

Which two characteristics describe Ethernet technology? (Choose two.)

A
  • It is supported by IEEE 802.3 standards.

- It uses the CSMA/CD access control method

61
Q

Which pairs of wires change termination order between the 568A and 568B standards?

A

green and orange

62
Q

A technician is troubleshooting a problem where the user claims access to the Internet is not working, but there was access to the Internet the day before. Upon investigation, the technician determines that the user cannot access the network printer in the office either. The network printer is on the same network as the computer. The computer has 169.254.100.88 assigned as an IP address. What is the most likely problem?

A

The computer cannot communicate with the DHCP server

IT Essentials (16 decks)

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