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The Bits and Bytes of Networking > Broadband protocols > Flashcards

Broadband protocols Flashcards

1
Q

what do broadband communications require?

A

a set of instructions, rules, and communication to various network layer protocols to support operation

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2
Q

what is point to point protocol for broadband communications? (PPP)

A

a set of instructions used to transmit data between two directly connected devices

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3
Q

PPP: what is it?

A

a bite oriented protocol broadly used for high traffic data transmissions. functions at the data link layer, which transmits data between two devices on the same network. designed to link devices so the endpoints do not need to bethe same vendor to work.

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4
Q

configuring PPP options

A

multi link, compression, authentication, error detection

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5
Q

compression

A

increases throughput by reducing the amount of data in the frame

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6
Q

authentication

A

occurs and connected devices exchange authentication messages using one of two methods:

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7
Q

method one of authentication

A

password authentication protocol

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8
Q

method to of authentication

A

challenge handshake authentication protocol

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9
Q

password authentication protocol (PAP)

A

a password authentication option that is hard to obtain plaintext from if passwords are compromised

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10
Q

challenge handshake authentication protocol CHAP

A

a three way handshake authentication that periodically confirms the identity of the clients

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11
Q

error detection (PPP)

A

includes frame check sequence and looped link detection

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12
Q

frame check sequence FCS

A

a number included in the frame calculated over the address, control, protocol, information, and padding fields used to determine if there has been data loss during transmission

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13
Q

loop link detection PPP

A

the tax loop links using magic numbers. a magic number is generated randomly at each end of the connection, so when elite message is received the device checked the magic number against its own. If a line is lived the number will match the senders magic number and the frame is discarded

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14
Q

sub protocols for PPP

A

to occur on the network layer when the network decides what physical path the information will take. these protocols use the configuration options you set for the endpoints.

network control protocol NCP, link control protocol

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15
Q

network control protocol: used to negotiate optional configuration parameters and facilities for the network layer. there’s a network control protocol for each higher larry protocol used by the PPP

A

used to negotiate optional configuration parameters and facilities for the network layer. there’s a network control protocol for each higher layer protocol used by the PPP

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16
Q

link control protocol LCP

A

initiates and terminates connections automatically for hosts. it automatically configures the interfaces at each end like magic numbers in selecting for optional authentication.

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17
Q

Frame in PPP definition, not parts.

A

a frame is a collection of data sent to a receiving point, and is how data is sent.

18
Q

PPP Frame format, parts.

A

flag, address, control, protocol, data, FCS, flag.

19
Q

flag 1 in PPP frame

A

a single bite and lets the receiver know this is the beginning of the frame. depending on the encapsulation there may or may not be a start or end flag.

20
Q

address PPP format

A

a single bite, contains the broadcast address

21
Q

control PPP formatting

A

a single bite required for various purposes, but also allows a connection the state a link

22
Q

Protocol PPP frame format

A

varies from one to three bytes which identify the network protocol of the data gram

23
Q

Data PPP Formatting

A

were the information you need to transmit stored and has a limit of one thousand five hundred bytes per frame

24
Q

frame check sequence FCS

A

2 or 4 bytes. Used to verify data is in tacked upon receipt at the endpoint.

25
Q

what happens with the data is package in a frame

A

it undergoes encapsulation

26
Q

encapsulation definition

A

the process by which he’s layer takes data from the previous layer and adds headers and trailers for the next layer to interpret

27
Q

de encapsulation

A

what happens when the frames are sent to the other and point and the processes reversed

28
Q

why can this PPP get expensive and hard to manage?

A

direct cables and links required. you may want to switch to a multi access ethernet solution. PPPoE

29
Q

PPPoE: point to point protocol over ethernet

A

a protocol made to bridge the gap between directly connected endpoints and other devices. a solution for tunneling packets over the DSL connection service providers IP network, and from note to the rest of the internet.

30
Q

PPPoE provides:

A

authentication, encryption, compression. primarily uses password authentication protocol for authentication.

31
Q

common usecase of PPPoE

A

using DSL services Where a PPPoE modem-router connects to the DSL service, or when a PPPoE DSL modem is connected to a PPPoE only router using an Ethernet cable

32
Q

PPP is strictly

A

point to point, so frames can only go to the intended destination.

33
Q

PPPoE requires a new step because

A

ethernet connections are multi access enabled.

34
Q

multi-access enabled:

A

every note connects to another

35
Q

Discovery stage

A

he establishes session idea to identify the hardware address. it ensures data gets routed to the correct place.

36
Q

PPPoE is an _____ of PPP inside the ethernet frame

A

encapsulation.

37
Q

PPPoE retains:

A

the same architecture, configuration options color and frame data as PPP but with one extra layer of ethernet encapsulation

38
Q

B broadband internet requires

A

protocols to make sure different de vices can connect with each other

39
Q

PPP key takeaway

A

encapsulates data so any PPP configured devices can communicate without issues

40
Q

PPPoE key takeaway

A

an extra layer of encapsulation for standard PPP frames, to enable data to be sent over ethernet connections.

The Bits and Bytes of Networking (32 decks)

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