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CTA-19238 (Do not use - Wrong info) > The internet > Flashcards

The internet Flashcards

1
Q

What is a Tier 1 provider?

A

Someone that owns the backbone of the internet and leases it out to T2 providers. The routers these people own will be in a mesh network and connect together for fault tolerance.

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2
Q

What is a T2 provider

A

Virgin media, etc. These providers buy from T1 providers and lease to T3s.

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3
Q

What are the name of the routers used by T1 providers.

A

Backbone router

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4
Q

What is TCP/IP

A

A language and common framework used to enable communication between computers.

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5
Q

Including speed, what are three traits of Dial-up networks.

A

33kbps
Digi>Ana>Digi
Requires modem and dial-up setup in OS.

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6
Q

What are three things you need to connect to a dial-up service?

A

Dial-up number, username, password. Provided by ISP.

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7
Q

Where in windows would you set up a dial up connection?

A

Network and sharing center.

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8
Q

What does ISDN stand for

A

Integrated Digital services Network

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9
Q

What is the standard speed for IDSN

A

64 kbps

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10
Q

What does B and D channel stand for in relation to IDSN and what do they do.

A

Bearer channels carry data at 64 kbps. There can be multiples of these.
Delta channels carry configuration data at 16kbps

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11
Q

What does B and D channel stand for in relation to IDSN and what do they do.

A

Bearer channels carry data at 64 kbps. There can be multiples of these.
Delta channels carry configuration data at 16kbps

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12
Q

What is a common channel config for IDSN

A

BBD for 128kbps download

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13
Q

What is the config of BBD referred to as?

A

Basic Rate Interface

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14
Q

True or false: DSL uses phone lines as well?

A

true

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15
Q

xDSL can reach hundreds of megabits?

A

Yesh

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16
Q

What is the order in which cable reaches your house

A

Provider > Box in street > (Optionally, other houses are connected to the box too) > House > modem > NIC

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17
Q

What does fttn mean?

A

Fiber up to the box in your street, then cable to your house.

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18
Q

What refers to a network that covers the span of a single city.

A

A MAN

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19
Q

Using the URL of a website, how can you tell if it’s using encrption?

A

It will say httpS://. No S = not secure.

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20
Q

What is line of sight wireless?

A

Wi-fi using strong antennae to reach up to eight miles. Often, this involves bridges between locations for more coverage.

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21
Q

Where would you apply line of sight wireless?

A

Ski resort, areas with widely dispersed buildings.

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22
Q

What are two other names for Dial-Up

A

Pots - Plain old telephone system

PSTN - Public switched telephone network

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23
Q

How would you connect a PC to the internet through a phone if it has no USB ports but a wifi capable NIC?

A

Mobile hotspot.

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24
Q

Cell data generations of 3 and under have less than 10 mbps?

A

Ye

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25
Q

What speed does 4G have theoretically?

A

1g down, 100 up.

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26
Q

What is LTE

A

Long term evolution, a category of 4g.

27
Q

What are WLANS and WWANS.

A

Wireless LANs and Wireless WANS.

28
Q

What is the theoretical speed of 5g

A

20gbps

29
Q

What does a satellite connection require once it leaves the modem?

A

Coaxial hooked up to an antenna

30
Q

What are three disadvantages of satellite connections?

A

High latency
Weather can disrupt connections
Can come with usage caps

31
Q

Dynamic NAT. What that do?

A

Dynamic NAT holds multiple routable IPs and will assign one to a computer for the duration of a communication transaction. Once it’s over, the IP is reused for the next person. If you have more computers than IP’s though, you’re going to have a problem.

32
Q

What is uPnP

A

Universal plug n play enables you to just plug a device in and have it automatically configure itself to work with other uPnP devices.

33
Q

What are the two email protocols that RECIEVE

A

POP, IMAP

34
Q

What is the email protocol that SENDS

A

SMTP

35
Q

What are the ports for FTP

A

20/21

36
Q

What are the ports for SSH

A

22

37
Q

What are the ports for Telnet

A

23

38
Q

What are the ports for SMTP

A

25

39
Q

What are the port(s) for DNS

A

53

40
Q

What are the port(s) for HTTP and HTTPS

A

80, 443

41
Q

What are the port(s) for POP/IMAP

A

110, 143

42
Q

What are the port(s) for RDP

A

3389

43
Q

What are the port(s) for SMB

A

137, 138, 139, 445

44
Q

What are the port(s) for DHCP

A

67, 68

45
Q

What are the port(s) for SNMP

A

161, 162

46
Q

What is VoIP

A

Voice over IP enables telecommunications over a network. This can be things like Skype, discord, or even using an actual phone.

47
Q

For VoIP, which is more important between speed and low latency?

A

Low latency

48
Q

What are two benefits of a vpn

A

Privacy

Enables remote workers to connect to a LAN as though they were in the office.

49
Q

What is the name of the VPN server that handles the connection upon the client’s request?

A

Routing and Remote Access Server

50
Q

What is the name of the protocol used by Active Directory

A

LDAP - Lightweight directory access protocol

51
Q

What is the purpose of SNMP

A

To monitor and collect data on your network devices. Hardware must support SNMP.

52
Q

What is SMB used for

A

File and print sharing in windows

53
Q

What are the two protocols used for IoT devices?

A

Z-wave and Zigby

54
Q

What do Z-wave and Zigby use for their topology methodology

A

Mesh network

55
Q

What do you do if you use ping and your DNS server is borked

A

ipconfig /flushdns

56
Q

What do you do if you think your DHCP has given you a bad address

A

ipconfig /release
ipconfig /renew

Alternatively, go into your router and refresh its DHCP

57
Q

Your router has no IP in its config page. What do?

A

Refresh its DHCP lease if it’s available.

58
Q

What cmd command can show you your connections

A

netstat

59
Q

What is one benefit dial up has over ISDN

A

ISDN is limited to 18L feet, dial up can go further.

60
Q

What is the average speed for standard DSL?

A

3mbps down 1 up

61
Q

How can you tell an RJ45 and RJ11 apart?

A

RJ 11 only has 4 golden pins on the jack

62
Q

How does a DSL setup look?

A

DSL uses a telephone jack in your wall to send and receive data over telephone lines.
From your wall to your computer, you have the wall jack > Splitter (Your telephone and internet connection are both plugged into this via separate wires) > from here, your phone cable goes to your phone, and your internet cable goes to your router.

Overall, voice calls only take up a fraction of a telephone line’s full capabilities. DSL utilizes the remaining frequencies for an internet connection while keeping them seperate.

63
Q

What was the first “always on” connection type that didn’t require calling up head office?

A

DSL

64
Q

What two connection methods are limited by 18K ft distance?

A

ISDN, DSL

CTA-19238 (Do not use - Wrong info) (23 decks)

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