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IT280 Reviewer > Home Networking E3 > Flashcards

Home Networking E3 Flashcards

1
Q

What does ISP stand for?

A

internet service provider

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2
Q

What is a typical broadband download speed in megabits per second (2013, Worldwide)?

A

15

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3
Q

What is a typical broadband upload speed in megabits per second (2013, Worldwide)?

A

5

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4
Q

What is bandwidth?

A

bits transmitted per second

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5
Q

What is throughput?

A

bits transmitted per second

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6
Q

List the two measures of network speed.

A

bandwidth, latency

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7
Q

List the three measures of network speed.

A

upload bandwidth, download bandwidth, latency

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8
Q

What is latency?

A

Latency is the delay between a packet being sent and being received

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9
Q

What does demarc stand for?

A

demarcation

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10
Q

Why is the demarc important?

A

The ISP is responsible for everything outside the demarc. You are responsible for everything inside the demarc

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11
Q

What does modem stand for?

A

modular demulator

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12
Q

What does a modem do?

A

convert between voltages and frequencies

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13
Q

What does 8P8C stand for?

A

eight position eight contact

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14
Q

In RJ45, what does RJ stand for?

A

registered jack

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15
Q

what is the technical term for a connection that can use either straight-through or crossover cables?

A

auto-mdix

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16
Q

What does UTP stand for?

A

unshielded twisted pair

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17
Q

What does UTP do?

A

It is a physical cable for carrying bits between devices within a LAN

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18
Q

What does Cat 5 stand for?

A

category five

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19
Q

Which is better quality, cat5 or cat6?

A

cat6

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20
Q

What is troubleshooting?

A

When you have trouble, you are trying to figure it out and find how to fix it.

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21
Q

What two times should you connect your computer directly to a modem?

A

When it is only the computer in the network (b) when troubleshooting the network

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22
Q

List the five services a typical home router provides.

A

firewall, gateway, dhcp, nat, wifi

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23
Q

What does a firewall do?

A

stops uninvited packets from your computer

24
Q

What does a gateway do?

A

provides a path from the computer to the internet

25
Q

What does DHCP do?

A

provides network configuration information to the computer when you connect to the internet.

26
Q

What does NAT do?

A

replace one IP address to another

27
Q

What does Wi-Fi do?

A

provides a wirless connection between a device and an access point

28
Q

What does WAP stand for?

A

wireless access point

29
Q

What does WLAN stand for?

A

wireless local area network

30
Q

How fast is Wi-Fi in Mb/s?

A

600

31
Q

How many connections can a Wi-Fi access point handle?

A

20+

32
Q

How fast (in Mb/s) is a wired connection?

A

100 is common

33
Q

What is half duplex?

A

can send and receive but not at the same time

34
Q

What is full duplex?

A

you can send and receive both at the same time

35
Q

What benefits does a switch provide?

A

(a) more wired ports. (b) full-duplex communication

36
Q

Name five components of a typical home Internet system.

A

ISP ,modem, router, WAP, computers.

37
Q

Name five categories of ISP.

A

cable, dsl (telephone), wireless, satellite, power line

38
Q

What does UPS stand for?

A

uninterruptible power supply

39
Q

What is a hotspot?

A

Another name for wireless access point

40
Q

What does default mean?

A

Default is a choice or action that will happen if you do not specify something else.

41
Q

What defaults should I not keep?

A

passwords

42
Q

What two passwords does a home router normally have?

A

administrative and Wi-Fi

43
Q

What is the maximum length (in meters) for Cat5 cabling?

A

100

44
Q

With T568 wiring, are the striped wires odd or even?

A

odd

45
Q

With T568 wiring, are the solid-color wires odd or even?

A

even

46
Q

With T568A wiring, what color goes in slots 1 and 2?

A

green

47
Q

With T568B wiring, what color goes in slots 1 and 2?

A

orange

48
Q

With T568A wiring, what color goes in slots 3 and 6?

A

orange

49
Q

With T568B wiring, what color goes in slots 3 and 6?

A

green

50
Q

With T568A wiring, what color goes in slots 4 and 5?

A

blue

51
Q

With T568B wiring, what color goes in slots 4 and 5?

A

blue

52
Q

With T568A wiring, what color goes in slots 7 and 8?

A

brown

53
Q

ith T568B wiring, what color goes in slots 7 and 8?

A

brown

54
Q

What is a Global Broadcast Ping?

A

it is a ping to every device that you can reach

55
Q

What is the command to do a Global Broadcast Ping?

A

ping 255.255.255.255

56
Q

With Global Broadcast Ping, who is the first responder?

A

The device sending the ping is normally the first to respond

57
Q

With Global Broadcast Ping, who is the second responder?

A

The router (gateway) connecting you to the rest of internet is normally the second device to respond

IT280 Reviewer (6 decks)

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