In which topology all devices are connected with another in a loop?

Network Topology

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Topology refers to the shape of a network. There are three basic physical topologies.

� Star: there is a central device to which all the workstations are directly connected. This central position can be occupied by a server, or a hub, a connection point of the elements of a network that redistributes the data.

� Bus: every workstation is connected to a main cable called a bus.

� Ring: the workstations are connected to one another in a closed loop configuration. There are also mixed topologies like the tree, a group of stars connected to a central bus.

Ex.4. Which network topology type is described below?

1. All the devices are connected to a central station. 2. In this type of network there is a cable to which all the computers and peripherals are connected. 3. Two or more star networks connected together; the central computers are connected to a main bus. 4. All devices (computers, printers, etc.) are connected to one another forming a continuous loop.

Ex.5. A network administrator has set up a new network in a school. Which topology has she chosen?

We have decided to install computers in all the departments but we haven�t spent a lot of money on them. Actually, only the one in the staff room is really powerful (and expensive). They all have common access to the Net and share a laser printer. The teachers in this school have built up a general file of resources kept in the main computer to which all the others in the network have access.

Ex.6. Read the text and write a list of the advantages and disadvantages of wired and wireless networks.

Wired networks are linked by Ethernet cables, phone lines and high-speed fibre optic cables. Wireless networks, however, use electromagnetic waves, such as radio waves, to transmit data. These are the main types of wireless networks: satellites � for long distances; WiMAX � for connecting Wi-Fi hotspots; Wi-Fi � for medium-range distances; Bluetooth � for short distances; GSM � for mobile phones.

To set up at home wireless LAN you�ll need computers equipped with a wireless adapter or wireless card, a wireless access point (a wireless router) and a broadband internet connection. Wired LANs are more difficult to install, but they are cheaper, faster and more re liable. Wireless networks let you move, or roam, from one access point to another, but they are less secure and subject to interference.

Ex.7. Read the text and tell how to install a wired modem router. Use modal verbs.

A modem router is a device that connects your computer or home LAN to the Internet.

� Plug one end of the phone cord directly into a phone jack, and the other end into the ADSL port on the router.

� Plug one end of the Ethernet cable into your computer�s network port and the other end into an Ethernet port on the router.

� Turn on your computer. To set up, or configure, the router, you�ll need to input some parameters, for example your ISP�s name and phone number. NOTE: a router has various Ethernet ports, so you can connect various PCs to the router via Ethernet cables. If you already have a hub or switch connecting a LAN, you only need one cable to connect the hub to the router.

Ex.8. In pairs, do this network quiz. See which pair can finish first.

1. This network typically consists of two or more local area networks, covering a large geographical area.

2. This type of network does not have a dedicated server; all the computers are independent.

3. On this topology, all devices are connected to the same circuit, forming a continuous loop.

4. The language used by computers to communicate with each other on the Internet is called

5. Which cables are used to transfer information for the Internet over long distances at high speeds?

6. Which device allows several computers on a local network to share an internet connection?

7. Which device serves as a common connection point for devices in a wireless network?

8. Bluetooth is a wireless technology that uses radio waves to transmit data over

Ex.9. Match the questions (1-6) with the answers (a-f).

1. Why was the hacker arrested? 2. Is it OK to log on to my bank account using public computers in a cyber-safe? 3. How do I set up an internet connection at home? 4. Can I download software from your site? 5. How can I add video to instant messaging? 6. What do I need to do to sign up for a Yahoo! e-mail account?

a) Yes, but always remember to log off after you�ve ended your session; b) Yes, you can even try the programs out for a period before you buy them! c) Because he broke into a computer system and stole confidential data; d) Simply install this program and plug the webcam into your computer; e) You need to install the software for your router. Follow the instructions provided by your ISP, probably in the form of a .pdf file on a CD; f) You have to create a username and password and then give some personal details.

Ex.10. Listen to an extract from a lecture on networks and answer these questions.

1. What does LAN stand for? 2. Where are LANs usually located? 3. What is the difference between a wired LAN and a wireless LAN?

Ex. 11. Listen again and label the elements of this LAN.

UNIT 5

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What is Topology?

Network topologies describe the methods in which all the elements of a network are mapped. The topology term refers to both the physical and logical layout of a network.

In this network topology tutorial, we will explain:

• What is Topology?
• Type of Network Topology
• Point to Point
• Bus Topology
• Ring Topology
• Star Topology
• Mesh Topology
• Tree Topology
• Hybrid Topology
• How to select a Network Topology?

Which topology nodes are connected in closed loop?

April 4, 2021

Table of Contents

• Which topology nodes are connected in closed loop?
• Which topology is connected in the shape of a closed loop?
• In which topology each device is connected in a closed loop or ring?
• In which network topology all the nodes are connected to each other?
• What are the five basic topology types?
• What is the best topology to use for a LAN?
• Which topology has minimal line cost?
• What are the 3 main topologies?
• Which topology is most reliable?
• Which is the most expensive topology?
• What are the names given for the computer in a computer network?
• Which is the smallest network?
• What is the most widely used topology today?
• Which topology is best for LAN?

Answer (Detailed Solution Below)

The correct answer isRing Topology

Important Points

• Network topology refers to how the nodes and links in a network are arranged. A network node is a device that can send, receive, store, or forward data. A network link connects nodes and may be either cabled or wireless links.
• Understanding topology types provides the basis for building a successful network. There are a number of topologies but the most common are bus, ring, star, and mesh:

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1. A bus network topology is when every network node is directly connected to the main cable.
2. In a ring topology, nodes are connected in a loop, so each device has exactly two neighbors. Adjacent pairs are connected directly; non-adjacent pairs are connected indirectly through multiple nodes.
3. In a star network topology, all nodes are connected to a single, central hub and each node is indirectly connected through that hub.
4. A mesh topology is defined by overlapping connections between nodes. You can create a full mesh topology, where every node in the network is connected to every other node. You can also create partial mesh topology in which only some nodes are connected to each other and some are connected to the nodes with which they exchange the most data. Full mesh topology can be expensive and time-consuming to execute, which is why it's often reserved for networks that require high redundancy. Partial mesh provides less redundancy but is more cost-effective and simpler to execute.
5. A tree topology is a special type of structure where many connected elements are arranged like the branches of a tree. For example, tree topologies are frequently used to organize the computers in a corporate network or the information in a database.

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