The internet

Question 1

What is a Tier 1 provider?

Answer 1

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.

Question 2

What is a T2 provider

Answer 2

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

Question 3

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

Answer 3

Backbone router

Question 4

What is TCP/IP

Answer 4

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

Question 5

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

Answer 5

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

Question 6

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

Answer 6

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

Question 7

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

Answer 7

Network and sharing center.

Question 8

What does ISDN stand for

Answer 8

Integrated Digital services Network

Question 9

What is the standard speed for IDSN

Answer 9

64 kbps

Question 10

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

Answer 10

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

Question 11

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

Answer 11

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

Question 12

What is a common channel config for IDSN

Answer 12

BBD for 128kbps download

Question 13

What is the config of BBD referred to as?

Answer 13

Basic Rate Interface

Question 14

True or false: DSL uses phone lines as well?

Answer 14

true

Question 15

xDSL can reach hundreds of megabits?

Answer 15

Yesh

Question 16

What is the order in which cable reaches your house

Answer 16

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

Question 17

What does fttn mean?

Answer 17

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

Question 18

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

Answer 18

A MAN

Question 19

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

Answer 19

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

Question 20

What is line of sight wireless?

Answer 20

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

Question 21

Where would you apply line of sight wireless?

Answer 21

Ski resort, areas with widely dispersed buildings.

Question 22

What are two other names for Dial-Up

Answer 22

Pots - Plain old telephone system

PSTN - Public switched telephone network

Question 23

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

Answer 23

Mobile hotspot.

Question 24

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

Answer 24

Ye

Question 25

What speed does 4G have theoretically?

Answer 25

1g down, 100 up.

Question 26

What is LTE

Answer 26

Long term evolution, a category of 4g.

Question 27

What are WLANS and WWANS.

Answer 27

Wireless LANs and Wireless WANS.

Question 28

What is the theoretical speed of 5g

Answer 28

20gbps

Question 29

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

Answer 29

Coaxial hooked up to an antenna

Question 30

What are three disadvantages of satellite connections?

Answer 30

High latency Weather can disrupt connections Can come with usage caps

Question 31

Dynamic NAT. What that do?

Answer 31

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.

Question 32

What is uPnP

Answer 32

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

Question 33

What are the two email protocols that RECIEVE

Answer 33

POP, IMAP

Question 34

What is the email protocol that SENDS

Answer 34

SMTP

Question 35

What are the ports for FTP

Answer 35

20/21

Question 36

What are the ports for SSH

Answer 36

22

Question 37

What are the ports for Telnet

Answer 37

23

Question 38

What are the ports for SMTP

Answer 38

25

Question 39

What are the port(s) for DNS

Answer 39

53

Question 40

What are the port(s) for HTTP and HTTPS

Answer 40

80, 443

Question 41

What are the port(s) for POP/IMAP

Answer 41

110, 143

Question 42

What are the port(s) for RDP

Answer 42

3389

Question 43

What are the port(s) for SMB

Answer 43

137, 138, 139, 445

Question 44

What are the port(s) for DHCP

Answer 44

67, 68

Question 45

What are the port(s) for SNMP

Answer 45

161, 162

Question 46

What is VoIP

Answer 46

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

Question 47

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

Answer 47

Low latency

Question 48

What are two benefits of a vpn

Answer 48

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

Question 49

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

Answer 49

Routing and Remote Access Server

Question 50

What is the name of the protocol used by Active Directory

Answer 50

LDAP - Lightweight directory access protocol

Question 51

What is the purpose of SNMP

Answer 51

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

Question 52

What is SMB used for

Answer 52

File and print sharing in windows

Question 53

What are the two protocols used for IoT devices?

Answer 53

Z-wave and Zigby

Question 54

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

Answer 54

Mesh network

Question 55

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

Answer 55

ipconfig /flushdns

Question 56

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

Answer 56

ipconfig /release ipconfig /renew Alternatively, go into your router and refresh its DHCP

Question 57

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

Answer 57

Refresh its DHCP lease if it's available.

Question 58

What cmd command can show you your connections

Answer 58

netstat

Question 59

What is one benefit dial up has over ISDN

Answer 59

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

Question 60

What is the average speed for standard DSL?

Answer 60

3mbps down 1 up

Question 61

How can you tell an RJ45 and RJ11 apart?

Answer 61

RJ 11 only has 4 golden pins on the jack

Question 62

How does a DSL setup look?

Answer 62

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.

Question 63

What was the first "always on" connection type that didn't require calling up head office?

Answer 63

DSL

Question 64

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

Answer 64

ISDN, DSL