Computer And Mobile Networks at Birkbeck College, University Of London | Flashcards & Summaries

Lernmaterialien für Computer and mobile networks an der Birkbeck College, University of London

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List several popular messaging apps. Do they use the same protocols as SMS?


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A list of several popular messaging apps: WhatsApp, Facebook Messenger, WeChat, and Snapchat. These apps use different protocols than SMS.

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Repeater

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A repeater extends the distance between two nodes

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Protocols

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Protocls govern communication between devices

A protocl is a set of rules that guide communication.

Communication between devices on a network is organised by protocls.

In computing, protocols ensure that data transfer can happen regardless of the transmission media or the connected devices/.

It can be thought of as ensuring that all netwroekd devices (at the core or on the edge) speak the same language and consistent responses are given to specific requests. 

Where specialist devices or local networks use non-standard protocols (in other words, their own language), they need to provide a means of translation when interfacing with the internet.

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You need to make sure that your network devices have a consistent time across all devices. What protocol do you need to run on your network?


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RTP - Network Time Protocol will ensure a consistent time across network devices on the network

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DSL

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Digital subscriber line. 

allows fast data transmission over copper telephone lines that are analogue or use a dial-up modem. The line is split for an even ratio of upload to download.

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MAC address

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Media Access Control

Your MAC address is something that's hardwired into your device by the manufacturer. So if you go through your settings on your mobile phone, you'll find that you have a MAC address at that. MAC addresses can't be cloned. The only time you can sort of clone them is when you do a virtual network and you have to spoof MAC addresses. But it is the unique identifier for any device that's communicating.

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W.hat are communication links?

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Physical media that trsmit data.

Different types can tramist data at different rates. 

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What is an end system?

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An internet-connected device


End systems are connected together by a network of communication links and packet switches.

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W. has a network application

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sc

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What is route thorugh the network

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A.lso known as path thogh th enetwork, a route is The sequence of communication links and packet switches traversed by a packet from the sending end system to the receiving end system

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ISP

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Internet service providers. 

End systems access the internet through ISPs

Each ISP is in itself a network of packet switches and communication links. ISPs provide a variety of types of network access to the end systems, including residential broadband access such as cable modem or DSL, high-speed local area network access, and mobile wireless access. ISPs also provide Internet access to content providers, connecting Web sites and video servers directly to the Internet. The Internet is all about connecting end systems to each other,

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W.hat does a packet switch do?

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A packet switch takes a packet arriving on one of its incoming communication links and forwards that packet on one of its outgoing communication links // like neurons in a brain

Packet switches come in many shapes and flavors, but the two most prominent types in today's Internet are routers and link-layer switches.

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Q:

List several popular messaging apps. Do they use the same protocols as SMS?


A:

A list of several popular messaging apps: WhatsApp, Facebook Messenger, WeChat, and Snapchat. These apps use different protocols than SMS.

Q:

Repeater

A:

A repeater extends the distance between two nodes

Q:

Protocols

A:

Protocls govern communication between devices

A protocl is a set of rules that guide communication.

Communication between devices on a network is organised by protocls.

In computing, protocols ensure that data transfer can happen regardless of the transmission media or the connected devices/.

It can be thought of as ensuring that all netwroekd devices (at the core or on the edge) speak the same language and consistent responses are given to specific requests. 

Where specialist devices or local networks use non-standard protocols (in other words, their own language), they need to provide a means of translation when interfacing with the internet.

Q:

You need to make sure that your network devices have a consistent time across all devices. What protocol do you need to run on your network?


A:

RTP - Network Time Protocol will ensure a consistent time across network devices on the network

Q:

DSL

A:

Digital subscriber line. 

allows fast data transmission over copper telephone lines that are analogue or use a dial-up modem. The line is split for an even ratio of upload to download.

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Q:

MAC address

A:

Media Access Control

Your MAC address is something that's hardwired into your device by the manufacturer. So if you go through your settings on your mobile phone, you'll find that you have a MAC address at that. MAC addresses can't be cloned. The only time you can sort of clone them is when you do a virtual network and you have to spoof MAC addresses. But it is the unique identifier for any device that's communicating.

Q:

W.hat are communication links?

A:

Physical media that trsmit data.

Different types can tramist data at different rates. 

Q:

What is an end system?

A:

An internet-connected device


End systems are connected together by a network of communication links and packet switches.

Q:

W. has a network application

A:

sc

Q:

What is route thorugh the network

A:

A.lso known as path thogh th enetwork, a route is The sequence of communication links and packet switches traversed by a packet from the sending end system to the receiving end system

Q:

ISP

A:

Internet service providers. 

End systems access the internet through ISPs

Each ISP is in itself a network of packet switches and communication links. ISPs provide a variety of types of network access to the end systems, including residential broadband access such as cable modem or DSL, high-speed local area network access, and mobile wireless access. ISPs also provide Internet access to content providers, connecting Web sites and video servers directly to the Internet. The Internet is all about connecting end systems to each other,

Q:

W.hat does a packet switch do?

A:

A packet switch takes a packet arriving on one of its incoming communication links and forwards that packet on one of its outgoing communication links // like neurons in a brain

Packet switches come in many shapes and flavors, but the two most prominent types in today's Internet are routers and link-layer switches.

Computer and mobile networks

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