Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

IT Fundamentals > 4. Networking Infrastructure > Flashcards

4. Networking Infrastructure Flashcards

1
Q

2 ways to connect with a LAN

A

Ethernet and WiFi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Standard Ethernet cable

A

RJ 45 (8 pin connecter)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Landline phone cable

A

RJ 11 (6 pin connecter)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

WAN

A

a collection of LANs not tied to one specific location

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

a PAN is a

A

Personal Area Network - designed to support a single person (Bluetooth - main purpose is to connect peripherals)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

NFC uses

A

inductive coupling - for payment and access control

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Broadband connections are

A

always on (as opposed to dial-up) and measured in Mbps or Gbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

A modem converts

A

Digital computer signals to analog for copper wires (and back)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Fiber optic modems use a

A

laser to convert digital signals to pulses of light to travel through glass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

6 types of internet connections

A

DSL (Digital Subscriber Line); Cable (coaxial), Fiber Optic (glass); Wireless for Mobile; Fixed Wireless (RF), Satellite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

5G has speeds

A

up to 20 Gbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

4G has speeds

A

up to 14 Mbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

IP (2 main things)

A

Assigns IP addresses (addresses used by the internet) and breaks data into packets

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

TCP (2 main things)

A

(Transmission Control Protocol) establishes network connections between systems and tracks/requests new packets

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The 2 addresses for a computer

A

IP and MAC (media access control)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

2 ways to assign an IP address

A

Static (manual) and DHCP (Dynamic Host Configuration Protocol - creates a pool of IP addresses)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Usually, Static IP addresses are for ______ and DHCP addresses are for ______

A

Servers; End Users

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

IP addresses are used to

A

address network packets

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

MAC addresses are assigned by the manufacturer of the device and use

A

12 hexidecimal digits (first 6 identify the manufacturer and the last 6 are a unique identifier assigned by the manufacturer)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

3 rules for valid IP address octets

A

never higher than 255, never start with 127 (loop back), never start with a number greater than 223

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

IP address that start from 224 - 239 are for

A

multicast systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

IP address that start from 240 - 255

A

are for experimental use

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Switches connect

A

all of the devices on a LAN to each other using MAC addresses

24
Q

Routers manage

A

traffic to/from the internet and to all of the switches using IP addresses

25
Q

Firewalls use

A

rules to allow/block traffic between 2 or more networks

26
Q

Border Firewalls sit

A

between LANs and the Internet (most common - protects the overall network)

27
Q

WiFi uses these items

A

a radio transceiver, antenna, and wireless access points

28
Q

WiFi is a

A

set of rules for interaction for all wireless devices and wireless access points, governed by the IEEE (Institute of Electrical and Electronics Engineers). Different versions of the 802.11 standard

29
Q

2 major differences between wireless networking versions are

A

maximum speed and radio frequency range

30
Q

2.4 GHz networks have

A

longer range but slower speeds

31
Q

5 GHz networks have

A

higher speeds but reduced range (need more wireless access points

32
Q

802.11

A

2.4 GHz / 2 Mbps (1997)

33
Q

802.11b

A

2.4 GHz / 11 Mbps

34
Q

802.11a

A

5.0 GHz / 54 Mbps

35
Q

802.11g

A

2.4 GHz / 54 Mbps

36
Q

802.11n

A

2.4 or 5 GHz / 600 Mbps (2009) - uses MIMO antenna (Multiple Input/Multiple Output)

37
Q

802.11ac

A

5 GHz / 1 (3?) Gbps - uses beam forming antenna scheme

38
Q

802.11ax

A

2.4 and 5 GHz (WiFi 6) / 9.6 Gbps

39
Q

when objects weaken a signal

A

attenuation

40
Q

2 basic categories of antennas

A

Omnidirectional (rubber ducks) -doughnut shaped waves, and directional - increases range by focusing power

41
Q

beamforming

A

the access point uses multiple antennas to detect and steer the signal towards the connecting device (virtual directional antenna)

42
Q

best way to set up a wireless network is to

A

conduct site survey - measure signal strength, detect electromagnetic interference, and use heat maps to show dead spots

43
Q

different radio frequencies are known as

A

channels

44
Q

the ‘name’ of the wireless network visible to users

A

SSID (Service Set Identifier)
- broadcasted by default
- disable SSID broadcasting to hide your network

45
Q

3 methods of wireless authentication

A

Pre Shared Keys; Enterprise Authentication (server w/username & password); Captive Portals (redirected - must ‘escape’ the portal to access the internet)

46
Q

WEP is

A

(Wired Equivalent Privacy) insecure

47
Q

WPA is

A

(WiFi Protected Access) insecure (uses TKIP - Temporal Key Integrity Protocol, which changes the encryption key for each packet)

48
Q

WPA2 is

A

secure (uses the protocol CCMP - based on AES (advanced encryption standard) )

49
Q

WPA3

A

secure (supports CCMP protocol and adds new technology SAE (Simultaneous Authentication of Equals) - a secure key exchange protocol)

50
Q

The protocol used for web content

A

HTTP - sever uses this protocol to send content, and the web browser re-assembles the content

51
Q

The secure protocol for web content

A

HTTPS - adds encryption (“s” is for “secure”)

52
Q

used to SEND messages between email servers

A

SMTP (used if the recipient does not already have an account on the senders server) - use SMTPS (secure)

53
Q

When you check your email, your email client reaches out to your email server and requests your messages.
This connection can use 3 different protocols

A

HTTPS (for web based clients - connection takes place over the web, gmail), POP3, and IMAP

54
Q

POP3

A

Post Office Protocol (downloads/deletes from server - traditional email clients like Outlook) - older protocol. Used to RECEIVE messages. Secure version is POP3 over TLS

55
Q

IMAP(S)

A

Internet Message Access Protocol (messages remain on the server, can access from any device - traditional email clients like Outlook). Used to RECEIVE messages

56
Q

A subnet mask _______

A

reveals how many bits in the IP address are used by the network by masking the network portion of the IP address

IT Fundamentals (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions