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Compti a+ 101/2 > Networking > Flashcards

Networking Flashcards

1
Q

What are the two types of Fiber?

A

SMF - Single Mode Fiber; light only enters one angle; used for long distances
MMF - Multi Mode Fiber; Shorter Distance

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2
Q

What are the 5 types of 802.11 Wireless Standards?

A

A, B, G, N, AC, (AX)

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3
Q

What is the bandwidth for each 802.11 Wireless Frequency?

A 
A: 54mb/s
B: 11mb/s
G: 54mb/s
N: 600mb/s
AC: 6,933mb/s
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4
Q

What frequencies do each of the 802.11 Wireless Standards operate at?

A 
A: 5GHz
B: 2.4GHz
G: 2.4GHz
N: 2.4/5GHz
AC: 5GHz
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5
Q

When were each of the 802.11 Wireless Standards released?

A 
A: 1999
B: 1999
G: 2003
N: 2009
AC: 2014
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6
Q

What does IP stand for?

A

Internet Protocol

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7
Q

What is the differences between IPv4 and IPv6?

A

IPv4 uses a 32 bit numeric address. Each section is an octet and has a range of 0-255. Current gen

IPv6 uses 128 bit hexadecimal, which uses both numbers and the alphabet. This is a next generation standard with realistically limitless combinations.

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8
Q

What is the role of a Network Bridge?

A

It separates data between groups. Uses MAC Addresses.

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9
Q

What is a NIC?

A

Network Interface Card

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10
Q

What does the Subnet Mask consist of?

A

Two parts. The network address and host address. (173.16)(.0.0). It also operates on binary.

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11
Q

What are the different classes of Subnet masks and their configuration?

A

A: 255.0.0.0
B: 255.255.0.0
C: 255.255.255.0

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12
Q

What are the general IP Classes and their Ranges?

A

A: 1-126 | Default Subnet: 255.0.0.0
B: 128-191 | Default Subnet: 255.255.0.0
C: 192-223 | Default Subnet: 255.255.255.0

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13
Q

What is the difference between a public and private IP?

A

Private is not publicly registered. Public is, typically from your ISP

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14
Q

What are the details ranges for each IP Class?

A

A: 10.0.0.0 - 10.255.255.255 (Sub - 255.0.0.0)
B: 172.16.0.0 - 172.31.255.255 (Sub - 255.255.0.0)
C: 192.168.0.0 - 192.168.255.255 (Sub - 255.255.255.0)

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15
Q

What is DHCP?

A

Dynamic Host Configuration Protocol

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16
Q

What role does DHCP play?

A

It can automatically assign an IP Address and Subnet Mask based on what’s available in the network.

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17
Q

What is APIPA? In regards to IP

A

Automatic Private IP Address Assignment

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18
Q

What is TCP and UDP?

A

TCP - Transmission Control Protocol

UDP - User Datagram Protocol

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19
Q

How does TCP connect from receiver to sender?

A

Used a three-way handshake to initiate transfer of information. Guarantees data is transferred. Can resend.

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20
Q

How does UDP connect the receiver and sender?

A

UDP is connectionless and sends without verifying of any arrival. This doesn’t guarantee data is sent, but is faster than TCP.

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21
Q

What is DNS?

A

Domain Name System

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22
Q

How does DNS operate?

A

DNS converts a URL into numbers to locate the specific connection. Think like an address.

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23
Q

What is NAT?

A

Network Address Translation

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24
Q

What does NAT achieve?

A

NAT converts a set of IP to another set. Think public to private.

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25
What is FTP?
File Transfer Protocol
26
What protocol does FTP use?
TCP
27
What is TFTP?
Trivial File Transfer Protocol
28
What does TFTP achieve?
TFTP achieves an unsecured transfer. Typically is reserved for local networks.
29
What protocol does TFTP use?
UDP
30
What is SFTP?
Secure File Transfer Protocol
31
How does SFTP differ from FTP?
SFTP is encrypted, which means data is not sent as text.
32
What is SMTP?
Simple Mail Transfer Protocol
33
What protocol does SMTP use?
TCP
34
What is POP3?
Post Office Protocol v3
35
How does POP3 operate?
POP3 receives/downloads emails from a server. This DOES NOT sync folders. Removes from server unless specified
36
What is IMAP4?
Internet Message Across Protocol v4
37
How does IMAP4 operate?
IMAP4 can access and manage emails from a server on a computer/device. This allows synchronizing with the server directly.
38
What is HTTP?
HyperText Transfer Protocol
39
What is HTTPS?
HyperText Transfer Protocol Secure. (Encrypts data)
40
What is TelNet?
Terminal Emulation Program
41
What does TelNet do?
TelNet can send commands remotely in an insecure connection.
42
What is SSH?
Secure Shell
43
What benefit does SSH have?
SSH can send/receive sensitive data because it uses a secure tunnel to transmit information
44
What is SNMP?
Simple Network Management Protocol
45
How does a computer access information across the Web from the router and beyond?
Computers accept data through Ports. TCP/UDP
46
What range can TCP and UDP operate between?
0-65535
47
What is DSL?
Digital Subscriber Line; Carries voice and data
48
What is ADSL?
Asymmetric Digital Subscriber Line; Download faster than upload
49
What is SDSL?
Symmetric Digital Subscriber Line; Download and Upload is synchronized
50
What is VDSL?
Very High Bit Rate Digital Subscriber Line; Uses copper. Meant for short distances. Fiber can achieve long distances
51
What is Cable Broadband?
CAble Modem that uses Coax; Much faster than DSL
52
What is POTS?
Public Switched Tele Network
53
What is PSTN?
Public Switched Tele Network
54
What is ISDN?
Integrated Services Digital Network; It’s the International Standard which is set to 128kbps
55
What are the cons of Satellite Internet?
Lower speeds, more latency, expensive
56
What are the Four main Network Types?
PAN - Personal Area Network (think Bluetooth) LAN - Local Area Network MAN - Metropolitan Area Network (think between buildings) WAN - Wide Area Network (Over a large geographical area, the Internet)
57
What are Wire Crimpers used for?
Creating custom length network cables by capping the ends with adapters
58
What is the tool used to connect wires to punch down block?
Punch Down Tool
59
What tool do you use to test custom cables?
Media Tester
60
What tool is used to test electrical circuits?
Multimeter
61
What tool is used to identify and isolate custom cables?
Tone Generator
62
What is a SOHO router?
Small Office/Home Office Routers
63
What is an SSID?
Service Set Identifier?
64
What is WEP?
Wired Equivalent Privacy; uses 40 bit encryption. not very secure
65
What is WPA?
Wi-Fi Protected Access; more secure than WEP
66
What is the encryption used for WPA?
TKIP Encryption - Temporal Key Integrity Protocol
67
What is WPA2?
Updated Iteration of WPA using an even stronger encryption
68
What encryption is used for WPA2?
CCMP Encryption - Chaining Message Authentication Code Protocol; Counter Cipher Mode with block
69
What is WPS?
Wifi Protected Setup
70
What is a MAC Filter?
Mac Address Hexadecimal “address”; Can prevent/permit other devices based on their MAC
71
What is DMZ?
DeMilitarized Zone; Allows device to be full exposed, outside of the Firewall
72
What is Port Forwarding?
A custom port service where you can take port requests and direct it
73
What is the Ping tool?
It’s a tool that tests issues and name resolutions based on sending a request for an echo reply
74
What is the Traceroute tool?
This tool locates the path data is taking. It will report back on each router hop. Find router issues based on which hop is down. > tracert IP
75
What is the Nbtstat tool?
This tool resolves Netbios names to IP. Least common to come across
76
What is the Netstat tool?
This tool allows you to see network connections >netstat -a (Shows active connections)
77
What is the IPconfig tool?
This tool display network configurations. >ipconfig /all
78
What is the IFconfig tool?
Mostly used in Linux/Unix, this tool displays config information. IP, Subnet, packets received/sent, errors, etc.
79
What is the NSLookup/Dig tool?
This is a tool that acts as a Name Server Lookup. Used to lookup DNS info. >nslookup yahoo.com Dig is the Unix version

Compti a+ 101/2 (3 decks)

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