Title: Module One Quiz
Course: CNT 2001 Computer Networks & Communications > Section: Module 1 Introduction to Networks

Q: Which physical topology does today’s Ethernet use to connect PCs?
- Bus topology
- Star topology
- Ring topology
- Mesh topology
A: Star topology
If right: Today, Ethernet uses the star physical topology but a bus logical topology.

Q: Which logical topology does today’s Ethernet use to connect PCs?
- Bus topology
- Star topology
- Ring topology
- Mesh topology
A: Bus topology
If right: Today, Ethernet uses the star physical topology but a bus logical topology.

Q: Which well-known network was originally created by the military?
- SOHO
- UAC
- Internet
- BryanNet
A: Internet
If right: The Internet is a WAN originally invented by the military but developed and used by colleges and universities. Today, it connects millions of computers and exists in every country.

Q: What technology used in Windows Vista and Windows 7 is used to help prevent unauthorized changes to the network?
- SOHO
- Topology Scan
- Security Check
- UAC
A: UAC
If right: User Account Control (UAC) is a feature of Windows Vista that requires confirmation and sometimes administrative passwords in order to allow certain actions to be taken on a Windows Vista computer, even when the user attempting the actions already has administrative rights.

Q: Which topology requires the most cabling?
- Bus topology
- Star topology
- Ring topology
- Mesh topology
A: Mesh topology
If right: A lot of cable is required to connect every computer or building directly to every other computer or building in a complete mesh topology.

Q: Which topology is the most expensive?
- Ring topology
- Star topology
- Mesh topology
- Bus topology
A: Mesh topology
If right: Because every computer or building is connected directly to every other computer or building in the network, a complete mesh topology gets to be very expensive.

Q: Which of topology is used to connected several devices together?
- Point-to-point topology
- Point-to-multipoint topology
- SOHO topology
- Server-centric topology
A: Point-to-multipoint topology
If right: The point-to-multipoint network topology is a variation on the point-to-point topology, except that it is commonly used in both LANs and WANs. Also, in a point-to-multipoint topology one device is connected to several other devices, instead of one device connected to just one other device.

Q: Which topology is used primarily in WAN links that have only one computer connected to another computer or device?
- Point-to-point topology
- Point-to-multipoint topology
- SOHO topology
- Ring topology
A: Point-to-point topology
If right: In a point-to-point topology network, only one computer is connected directly to one other computer or device. This type of configuration is most commonly used when a computer outside the network needs to connect remotely to a computer or server inside a network.

Q: Which type of logical topology uses a media access unit?
- Bus topology
- Star topology
- Ring topology
- Mesh topology
A: Ring topology
If right: Token ring, which uses the star physical topology but a ring logical topology, uses a media access unit (MAU).

Q: Which type of topology combines a star topology with a ring topology?
- ISP topology
- Hybrid topology
- SOHO topology
- Mesh topology
A: Hybrid topology
If right: The hybrid network topology, as its name implies, is a hybrid or combination of several network topologies. Most networks that you will come across likely will be some kind of hybrid network topology. Probably the most common hybrid is a star-bus topology.

Q: Which physical topology does Token Ring use?
- Bus topology
- Star topology
- Ring topology
- Mesh topology
A: Star topology
If right: Token ring uses a star physical topology.

Q: Which logical topology does Token Ring use?
- Bus topology
- Star topology
- Ring topology
- Mesh topology
A: Ring topology
If right: Token ring uses a ring logical topology.

Q: What kind of network contains one or more primary servers that provide authentication for network resources and services?
- WAN
- Peer-to-peer network
- Client/server network
- SOHO
A: Client/server network
If right: Authentication is used to verify the identity of a person or other identity. Client/server networks will include servers that will provide central authentication for all clients.

Q: Which type of network uses dedicated computers and dedicated clients?
- WAN
- Peer-to-peer network
- Client/server network
- SOHO
A: Client/server network
If right: Client/server networks are a bit more complex and quite a bit more expensive than peer-to-peer networks. In a client/server environment, network management is concentrated into one main computer called a server or domain controller. In this type of network, all users and the resources they share are placed on one or more servers. Anytime a user wants to access the network or some resource on the network, that user’s personal workstation has to first get permission from the main server. The main server, or domain controller, then allows the requesting computer access to the resource asked for on behalf of the user.

Q: In what type of network do all computers act as servers and clients that can share data and resources with all other computers in the network?
- WAN
- Peer-to-peer network
- Client/server network
- SOHO
A: Peer-to-peer network
If right: In a peer-to-peer network, each computer in the network acts independent of all the other computers, but can share data and resources such as printers with all the other computers in the network. Because each computer acts independent from the others, security and resource sharing must be set up on each computer separately.

Q: A __________ is usually limited to a city area of about 50 kilometers.
- LAN
- WAN
- MAN
- SOHO
A: MAN
If right: Networks larger than LANs, but really slightly too small to be considered WANs, are sometimes called metropolitan area networks. MANs are no more than about 50 kilometers across. MANs link areas the size of a college campus, up to areas the size of a city, into a single data network that can be either privately owned by a company or publicly own by a municipality.

Q: Which topology connects all computers to a main cable?
- Bus topology
- Star topology
- Ring topology
- Mesh topology
A: Bus topology
If right: In a bus network topology, all computers in the network are tied together by one main cable, called a backbone.

Q: What term defines the actual pathway that signals use to travel across a network?
- Physical topology
- Logical topology
- Scalability model
- Manageability model
A: Logical topology
If right: Topology describes the shape of the network. Whereas the physical topology describes the actual layout of the network, the logical topology describes the actual pathway of the signals, which may or may not be the same as the physical topology.

Q: Which term defines the actual layout of a network?
- Physical topology
- Logical topology
- Scalability model
- Manageability model
A: Physical topology
If right: Topology refers to a networks shape. The networks actual layout would be the physical topology.

Q: Which term defines the logical and physical description of a network?
- Topology
- Client centric
- Centricity
- Fractology
A: Topology
If right: The term topology refers to the shape of something. In this way, a topological map shows the shape of the land. A computer network also has a shape, referred to as a network’s topology. Networks can have both physical topologies and logical topologies.

Q: A ________ is usually limited to just one building, or at most several buildings that are located very close together.
- LAN
- WAN
- SAM
- SOHO
A: LAN
If right: Local area networks are located on the other end of the geographic scale. Whereas a WAN can spread across very large geographic areas, LANs, as the name implies, are limited to a local area. LANs are usually limited to just one building or, at most, several buildings located very close together. Sometimes LANs are limited to only certain rooms in a given building.

Q: A ________ is a very large network that can stretch across large geographical areas.
- LAN
- WAN
- SAM
- SOHO
A: WAN
If right: A wide area network (WAN) is a very large network that can stretch across large geographical areas. The biggest WAN in existence is the Internet; however, networks that connect several cities, states, or nations also qualify as WANs.

Q: What device, consisting of a screen and keyboard, was used to connect to a mainframe computer?
- Smart terminal
- Dumb terminal
- Terminal server
- Terminal PC
A: Dumb terminal
If right: Data could be placed on a large central computer called a mainframe computer and users connect to the mainframe using called dumb terminals. The dumb terminal was essentially a screen and a keyboard connected to the mainframe computer. To access data on the computer, a user had to use a dumb terminal.

Q: Which topology uses a token to indicate which host can communicate?
- Star topology
- Mesh topology
- Bus topology
- Ring topology
A: Ring topology
If right: The control mechanism for the ring topology is called a token. Basically, a single token is passed from computer to computer. If a computer does not want to send data, it lets the token pass to the next computer. If a computer wants to transmit data, it takes control of the token and sends the data to the destination computer. When the destination computer receives the data, it sends an acknowledgement to the computer that originally sent it. When the computer that sent the data receives the acknowledgement, it releases the token to continue around the network looking for the next computer that wants to send data.

Q: Which topology specifies which computer can communicate, thus preventing the network from ever crashing because too many computers are trying to communicate at the same time?
- Bus topology
- Star topology
- Ring topology
- Mesh topology
A: Ring topology
If right: As explained earlier, a ring topology uses a token mechanism. This design prevents the network from ever crashing due to too many computers trying to send data at the same time; however, if several computers want to send data, data transmission can become very slow.

Q: Which topology forms a ring or loop?
- Mesh topology
- Bus topology
- Ring topology
- Star topology
A: Ring topology
If right: The ring topology uses a large ring to connect the various computers together in a network configuration. The ring topology is similar to the bus topology in that both use a main cable (a backbone) to connect all the computers together. In the case of the ring topology, the backbone cable is formed into a ring to connect all the computers together.

Q: Which topology has data flow in only one direction?
- Ring topology
- Mesh topology
- Bus topology
- Star topology
A: Ring topology
If right: Because a ring topology uses a large ring to connect various computers together in a network configuration, data can flow in only one direction. As a result, data does not collide with data from another computer. It should be noted that to provide fault tolerance, many existing ring implementation use dual counter-rotating rings.

Q: Which topology is used to connect every host or site to every other host or site?
- Star topology
- Mesh topology
- Bus topology
- Ring topology
A: Mesh topology
If right: In a full mesh topology, every computer or building is connected directly to every other computer or building in the network.

Q: Which topology is the most redundant?
- Mesh topology
- Star topology
- Ring topology
- Bus topology
A: Mesh topology
If right: Because every computer or building is connected directly to every other computer or building in the network, a complete mesh topology allows for a great deal of redundancy.

Q: Which topology is used primarily in WAN environments?
- Ring topology
- Star topology
- Bus topology
- Partial Mesh topology
A: Partial Mesh topology
If right: In a full mesh topology, every computer or building is connected directly to every other computer or building in the network. While this allows for a great deal of redundancy, it can also be very expensive. Therefore, today many WANs use a partial mesh.

Q: The most recognized and most popular WAN is the ____________.
A: Internet
If right: The Internet is a WAN originally invented by the military.

Q: The ________________ is an Internet service that allows people to use special client software called a browser to view the content of different sites.
A: World Wide Web
If right: The World Wide Web is a service on the Internet that allows people to use special client software called a browser to view the content of different Internet sites in a more visually appealing manner. The initial development of the Web took place in the early 1990s. By the mid 1990s, the Web was established as a viable entity on the Internet.

Q: Which type of topology includes multiple connections to various sites but not necessarily every site connected directly to every other site?
A: Partial mesh network
If right: A partial mesh topology has all the same advantages as a full mesh topology in which redundancy is concerned; however, it also does not require as many connections. Because fewer connections are required, a partial mesh network costs less.

Q: What do you call a company or organization that provides access to the Internet?
A: Internet service provider (ISP)
If right: Internet service providers (ISPs) furnish access to the Internet for an individual or for an entire network.

Q: Which applet in the Windows Control Panel is used to configure networking options?
~ The key to configuring different network options is also found in the Windows Vista Control Panel. Specifically, the applet named Network and Sharing Center is where all issues related to networking and sharing of files, folders, media, and so on are located

Q: What formula would you use to determine the number of connections used in a mesh network?
~ One way to determine how many connections a mesh topology network requires is to use a simple formula: n(n–1)/2. In this formula, n stands for the number of devices or buildings to be connected.

Q: What type of computer acts a centralized computer that does all processing for its terminal clients?
~ Early networks placed all data on a large central computer, called a mainframe, and connected dumb terminals to this large mainframe computer. The dumb terminal was essentially a screen and a keyboard. To access the mainframe’s data, a user had to use a dumb terminal.

Q: Which physical topology is the most common on today’s local area networks?
~ The star topology has several workstations connected together to one central device such as a hub or a switch. The star topology is used in today’s Ethernet network and legacy Token Ring networks.

Q: Which logical topology is the most common on today’s local area networks?
~ Most local area networks use Ethernet, which uses the bus logical topology.

Q: Explain the difference between a peer-to-peer network and a client/server network.

Q: Explain why a client/server model is more powerful than a mainframe.