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IT > General Cards (IT Level 3) > Flashcards

General Cards (IT Level 3) Flashcards

1
Q

TCP

A

Port: 445 / Reliable / Ensures packet arrives before sending next.

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2
Q

UDP

A

Port: 53 / Best Effort / Keeps sending packets as it makes them, no checking if packets arrived.

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3
Q

Name all the common VPN types.

A 
PPTP (Point-to-point tunneling protocol)
L2TP (Layer 2 tunneling protocol) / IPsec
SSTP (Secure socket tunneling protocol)
IKEv2 (Internet Key Exchange version 2)
OpenVPN.
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4
Q

Pros and cons of PPTP

A 
Point-to-point tunneling protocol-
Pros:
 - Client built into most platforms
 - Easy to setup
Cons:
 -Insecure
 -Compromised by NSA
 -Easily blocked
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5
Q

Pros and cons of L2TP

A 
Layer 2 tunneling protocol-
Pros:
 -Considered secure
 -Easy to setup
 -Available on most modern platforms
 -Faster than OpenVPN
Cons:
 -Can struggle with restrictive firewalls
 -Often setup badly
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6
Q

Pros and cons of SSTP

A 
Secure socket tunneling protocol -
Pros:
 -Very secure
 -Integrated into windows
 -Microsoft support
 -Can bypass most firewalls
Cons:
 -Proprietary standard owned by Microsoft
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7
Q

Pros and cons of IKEv2

A 
Internet Key Exchange version 2 -
Pros:
 -Fast
 -Stable
 -Secure
 -Easy to setup on client devices
 -Support on Blackberry devices
Cons:
 -Not supported on many platforms
 -Implementing on server side is tricky
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8
Q

Pros and cons of OpenVPN

A 
OpenVPN -
Pros:
 -Very secure
 -highly configurable
 -Open source
 -Can by-pass firewalls
 -Need third party software
Cons:
 -?
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9
Q

Name 3 ciphers

A
  • Blowfish (32-448bits)
  • AES (256 bits)
  • Camellia (128-256bits)
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10
Q

How does a HUB send data?

A

It broadcasts it to all devices on the network.

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11
Q

How does a Switch send data?

A

It sends data to devices based on the MAC address.

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12
Q

How does a Router send data?

A

It sends data to devices based on the IP address.

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13
Q

Name the 3 ways a wireless network transmits data.

A

Omni-Directional - All directions over a wide area.
Semi-Directional - Transmits in a single direction providing a strong long-range signal in a specific direction.
Highly Directional - Transmits a narrow focused signal in a single direction, used in point-to-point systems.

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14
Q

What does IEEE stand for?

A

the Institute of Electrical and Electronics Engineers

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15
Q

What does IEEE 802.11 cover?

A

Implementation of wireless local area networks.

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16
Q

What is the data transfer rate and frequency of IEEE 802.11a?

A

54Mbps / 5GHz

17
Q

What is the data transfer rate and frequency of IEEE 802.11b?

A

11Mbps / 2.4GHz

18
Q

What is the data transfer rate and frequency of IEEE 802.11g?

A

54Mbps / 2.4GHz

19
Q

What is the data transfer rate and frequency of IEEE 802.11n?

A

600Mbps / 2.4GHz

20
Q

What is the data transfer rate and frequency of IEEE 802.11ac?

A

1300Mbps / 5GHz

21
Q

What are the 5 IEEE 802.11 standards?

A

802.11a, 802.11b, 802.11g, 802.11n, 802.11ac

22
Q

What is the IEEE 802.15 standards?

A

This covers the development and implementation of Personal Area Networks (PANs)

23
Q

What is the range and transmitted power of IEEE 802.15 class 1?

A

100mW / 100 meters

24
Q

What is the range and transmitted power of IEEE 802.15 class 2?

A

2.5mW / 10 meters

25
Q

What is the range and transmitted power of IEEE 802.15 class 3?

A

1mW / Less than 10 meters (Commonly 1 meter)

26
Q

What is tethering?

A

Connecting a Wi-Fi enabled device to a smartphone to allow it to have internet via the smartphone’s connection.

27
Q

What is NFC?

A

Near field communication, works from 4cm away.

28
Q

Name the types of wireless technologies.

A

WEP (Wireless equivalency privacy)
WPA (Wi-Fi protected access)
WPA2 (Wi-Fi protected access 2)
WPA3 (Wi-Fi protected access 3)

29
Q

What is an SSID?

A

SSID is used to identify a wireless network, by default it is broadcasted which can be a vulnerability.

30
Q

MAC Address Filtering

A

Only allowing devices with a MAC address which is on a list, not very secure as a MAC address can be spoofed.

31
Q

What is remote assistant?

A

Allows users to send an invite for control and get control at a limited level.

32
Q

What is remote desktop?

A

Allows someone to control a device with full controls remotely.

IT (4 decks)

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