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Networking fundamentals > Class 2 > Flashcards

Class 2 Flashcards

1
Q

a basic unit of information in network transmission

A

packet

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2
Q

8-bit

A

a byte or an octet

(In IPs) an octet is converted to decimal separated by a dot

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3
Q

controls communications

can obtain an IPv4 address using DHCP (Dynamic Host Configuration Protocol)

A

IP service port

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4
Q

a protocol, by which data is sent from one computer to another
most networks combine it with a higher-level protocol called TCP

A

Internet Protocol (IP)

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5
Q

How many classes does the IPv4 system have?

How many are defined by the first octet?

A

5

All of them

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6
Q

The first bit of the first octet is always set to 0 (zero)
Hence the first octet ranges from 1 - 127 (0 is not displayed but takes one of the bits away)
examples: 1.x.x.x to 126.x.x.x (127.x.x.x is reserved for loopback IP adresses)

A

Class A Address

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7
Q

The first two bits in the first octet are set to 10
range from 129.0.x.x to 191.255.x.x
default subnet mask is 255.255.x.x

A

Class B

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8
Q

The first three bits of the first octet are set to 110
range from 192.0.0.x to 223.255.255.x
default subnet mask is 255.255.255.x

A

Class C

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9
Q

The first four bits of the first octet are set 1110
range from 224.0.0.0 to 239.255.255.255
reserved for multitasking
no subnet mask

A

Class D

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10
Q

Reserved for experimental purposes
range from 240.0.0.0 to 255.255.255.254
no subnet mask

A

Class E

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11
Q

network communication protocol designed to send data packets over the Internet
used together with IP

A

TCP/IP

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12
Q

has 2 kinds of communication channels TCP/IP and OSI

A

TCP/IP

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13
Q

3 most common TCP/IP protocols

A

HTTP, HTTPS, FTP

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14
Q

a protocol used between a web client and a web server
at the beginning of the web address
non-secure
web client - > dns server (sends address asks for IP) -> dns sends IP address back -> user goes to the IP address

A

HTTP

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15
Q

Like HTTP, but secure
uses SSL technology and encryption
provides authentication of the website and associated web server with which the user is communicating

A

HTTPS

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16
Q

Uses TCP/IP to enable Data transfer
a computer directly sends or receives data from another computer
often secured with SSL/TLS (FTPS)

A

FTP

17
Q

a transport layer protocol defined for use with the IP network layer protocol, defined by RFC 768
message-passing transport to applications and upper-layer protocols
does NOT establish an end-to-end connection between communicating end systems

A

UDP (User Datagram Protocol)

18
Q

error-reporting protocol

extension to the IP

A

ICMP (Internet Control Management Protocol)

19
Q

translates domain names into IP addresses and vice versa

has its own network

A

DNS (Domain Name System)

Networking fundamentals (4 decks)

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