Karteikarten
WAN Technologies and Cabling
Karten in diesem Stapel (24)
- 1What are two examples of protocols that WAN technologies use and what layer are they?HDLC and PPP, both are layer two protocols.
- 2Describe VPN over the internet.Virtual Private Networks are logical local networks that can be accessed and created through the internet. They are more secure, easy to manage and monitor.
- 3Describe Multiprotocol Label Switching.Multiprotocol Label Switching is where a 32-bit header is inserted into a packet, This header is called a label, and is how information is tracked throughout a network of this type.
- 4Define the connection and format of logical network components in a Multiprotocol Label Switching network. Also define the revised names of each component.There are Label Switch Routers in the core of this network, Provider Edge routers branching out from that, and finally at the end we have Customer Edge Routers.
- 5Why are labels given, which layer of router re-writes them, and what happens as the info exits the core?Labels are given to get to the next destination. Label Switch Routers are the ones who re-write the labels, and IP addresses are used again as info exits the core.
- 6Describe Metro-Ethernet.Metro-Ethernet is designed for metropolitan areas and is designed as a loop. Imagine a wide ring of cable around a large area. That is Metro-Ethernet.
- 7Describe Metropolitan Area Networks.Each customer gets a wavelength of light in this scenario. Each wavelength will contain information or a connection.
- 8What is SOHO?SOHO stands for Small Office/Home Office. This defines the network and configuration practices for small networks typically based in a home office or small office, as the name suggests.
- 9What is an On-Premises network?An On-Premises network is equivalent to a physical network. It is the traditional style of network architecture.
- 10What is a Cloud based network?A Cloud based network is the equivalent of a logical network.
- 11Explain the pros of an On-Premises network.Quality is managed by the owner of the business. On-Premises is generally better for high security environments, seeing as the physical components can be placed in a low-risk data centre. These networks are more customisable, and the way it functions and works is entirely up to the owner.
- 12Explain the cons of On-Premises networks.The physical components are very expensive and requires high-maintenance costs as well. A high amount of effort must go into correctly configuring the network, and is not as scalable as a Cloud based network could be.
- 13Explain the pros of Cloud based networks.Cloud based networks are typically much cheaper and easier to maintain than the traditional On-Premises network. Cloud computing is very scalable, and costs are easier to predict over time.
- 14Explain the cons of Cloud based networks.There is a significant lack of security within the cloud, and owners are expected to give of most of their control of their network to their provider, or whoever is running the server. These networks are typically less customisable, and you never know who you are sharing your resources with.
- 15When deciding between On-Premises and Cloud based computing, what factors must you keep in mind? What should matter when making the decision?Take into account how much freedom of your network you are willing to give up. Also consider the process for data recovery, deployment, outages, and consider country regulations.
- 16Describe coaxial cables.Coaxial cables have a single copper conductor in the middle. The metal shield blocks from interference, and so is extremely resistant and can stretch vast ranges.
- 17Describe shielded twisted pair cabling.This is a special kind of copper telephone wiring used frequently in businesses. Shielded cables assist with interference and have a longer reach.
- 18Describe fiber optic cables.Fiber optic cables are cables with metal tubes inside of them that transfer information in light. They are prone to interference and cannot stretch far, but are extremely fast and reliable. They are easy to break though.
- 19Describe unshielded coaxial cabling. Define the speed and range of this cabling.Used for any kind of networking (both phone and computing), UTP comes in various different forms (CAT1-7) and is widely used. The speed is typically 1 Gbps, and can span 100 metres.
- 20What is the bandwidth of CAT3, and what is another name of CAT5.CAT3 typically goes 10Mbps, and CAT5 is the standard name for Fast Ethernet.
- 21What is the difference between single and multimode fiber?Single mode fiber enables one single stream of light to pass through the glass tube at a given angle within a smaller diameter, multimode allows several at different angles.
- 22Define ethernet shared media.Ethernet shared media describes the output of a device like a hub, where the media is literally shared.
- 23Define ethernet point-to-point.Ethernet point-to-point uses switches to connect to routers, that form a network. Similar to most modern networks.
- 24What is PoE?PoE stands for Power over Ethernet. This standard defines devices that can be powered by cabled connections.
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- CCNA CCNA 2020 Karteikarten am WAN Technologies and Cabling, erstellt von Aliyah Merritt am 30/05/2020.
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- Aliyah Merritt
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