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CompTIA Network plus Certification Study Guide

Glen Clarke

Chapter 1

Basic Network Concepts - all with Video Answers

Educators

Chapter Questions

Problem 1

. B. Computer systems sharing a common communication medium for the purpose of sharing information or devices is what a network is all about. The entities are usually workstations, and the medium is either a cable segment or a wireless medium such as an infrared signal.
A, C, and D are incorrect because a network, by definition, is two or more computers connected to share information. These three choices do not allow two or more PCs to share information; they are only setups of several connected devices or a PC connected to a peripheral device.

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Problem 2

$\square$ B. A peer-to-peer network has no dedicated servers. There are no hierarchical differences between the workstations in the network; each workstation can decide which resources are shared on the network. In a peer-to-peer network, all workstations are clients and servers at the same time.
ख A is incorrect because this network type has a dedicated server. C and D are incorrect because a Windows Server 2003 and Novell NetWare 6.x constitute the server portion of the client/server network.

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Problem 3

$\square$ C. The Microsoft term for a peer-to-peer network is a workgroup environment. If you have not installed your Windows clients in a domain (client/server), then they are sitting in a workgroup environment.
ख A is incorrect because a client/server network is the opposite of a peer-to-peer network; a client/server network uses a central server. B is incorrect because domain is the term for a Microsoft server-based environment. D is incorrect because Active Directory is the term for Microsoft's implementation of a directory server.

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Problem 4

. $\square$ D. Two remote offices that are spread over geographic distances constitute a wide area network (WAN).
ख A is incorrect because it is the opposite of a WAN; a LAN is a network in a single geographic location. B is incorrect because there is no such thing in networking as a JAN. C is a metropolitan area network.

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Problem 5

$\square$ A is correct. A file and print server is responsible for providing files and printers to users on the network.
ख B, C, and D are incorrect because they are each their own type of server. A web server will host web sites; a directory server is a server that contains a central list of objects, such as user accounts on the network; and an application server runs a form of networking application, such as an e-mail or a database server program.

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Problem 6

C. An extranet allows selected individuals to see your corporate intranet. ख A, B, and D are incorrect. An intranet allows only individuals within your company to access the site; allowing anyone on the Internet to access it would make it an Internet-type application.

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Problem 7

$\square$ C. The topology is the physical layout of computers, cables, and other components on a network. Many networks are a combination of the various topologies.
ख A is incorrect because a segment is a part of a LAN that is separated by routers or bridges from the rest of the LAN. B is incorrect because a backbone is the main part of cabling that joins all of the segments together and handles the bulk of the network traffic. D is incorrect because a protocol is a set of rules governing the communication between PCs; a protocol can be thought of as similar to a language.

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Problem 8

$\square$ B. In a star topology, all computers are connected through one central hub or switch. A star topology actually comes from the days of the mainframe system. The mainframe system had a centralized point at which the terminals connected.
ख A is incorrect because a bus topology uses one cable to connect multiple computers. C is incorrect because the mesh network has every PC connected to every other PC and can resemble a spider's web. $\mathbf{D}$ is incorrect because a ring topology resembles a circle or ring. $\mathbf{E}$ is incorrect because there is no physical cabling to represent the topology; it is represented by a bubble or cell.

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Problem 9

$\square$ C. A mesh topology is not very common in computer networking, but you have to know it for the exam. The mesh topology is seen more commonly with something like the national telephone network. With a mesh topology, every workstation has a connection to every other component of the network.
ख A is incorrect because a bus topology uses one cable to connect multiple computers. B is incorrect because a star topology is made up of a central point or hub with cables coming from the hub and extending to the PCs. D is incorrect because this topology resembles a circle or ring. $\mathbf{E}$ is incorrect because there is no physical cabling to represent the topology; it is represented by a bubble or cell.

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Problem 10

. $\square$ A. A bus topology uses terminators on any loose end of the bus. The terminator is designed to absorb the signal so that it does not bounce back on the wire and collide with other data. ख B is incorrect because a star topology does not use terminators; it uses a central hub or switch that connects systems to the network. C is incorrect because a mesh topology has each system connecting to each other system. D is incorrect because a ring topology has no beginning and no end, so there are no "loose ends" to put a terminator on. E is incorrect because a wireless network does not use cables at all.

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Problem 11

. $\square$ D. RJ-45 is not a network medium. Three primary types of physical media can be used: coaxial cable, twisted-pair cable, and fiber-optic cable. Transmission rates that can be supported on each of these physical media are measured in millions of bits per second (Mbps). RJ-45 is a connector type for twisted-pair cabling.
ख A, B, and C are incorrect because they are all common network media.

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01:34

Problem 12

$\square$ B. 10 Base 2 (thinnet) has a distance limitation of 185 meters. 10 Base 5 (thicknet) has a distance limitation of 500 meters, and 10BaseT (twisted-pair) has a distance limitation of 100 meters.
ख A, C, and D are incorrect because these are not the distances covered by thinnet.

Gopal Sharma
Gopal Sharma
Numerade Educator
02:31

Problem 13

. C C. Fiber-optic cabling sends pulses of light through a glass core.
ख A, B, and D are incorrect because each carry an electrical signal.

Arpit Gupta
Arpit Gupta
Numerade Educator
06:07

Problem 14

. $\square$ A. All twisted-pair cabling is limited to 100 meters.
ख $\mathbf{B}$ is incorrect because 185 meters is the maximum distance of thinnet cabling; $\mathbf{D}$ is incorrect because 500 meters is the maximum distance of thicknet cabling. $\mathrm{C}$ is incorrect; there is no cable type that has a 250 -meter maximum distance.

Jonathan Ibarra
Jonathan Ibarra
Numerade Educator
10:48

Problem 15

15 $\square$ D. 500 meters is the maximum distance of thicknet cabling.
ख A is incorrect because all twisted-pair cabling is limited to 100 meters. B is incorrect because 185 meters is the maximum distance of thinnet cabling. $\mathbf{C}$ is incorrect because there is no cable type that has a 250 -meter maximum distance.

Virginia Rauch
Virginia Rauch
Numerade Educator

Problem 16

. $\square$ B. 100BaseT uses twisted-pair that runs at $100 \mathrm{Mbps}$. CAT 5 is twisted-pair cabling type that runs at $100 \mathrm{Mbps}$.
ख A is incorrect because CAT 3 runs at $10 \mathrm{Mbps.} \mathrm{C}$ is incorrect because thinnet runs at $10 \mathrm{Mbps}$ and is known as 10Base2. D is incorrect. Although fiber optic can run at $100 \mathrm{Mbps}$, it is not used in 100BaseT.

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Problem 17

$\square$ A and D. Fiber-optic cabling uses a number of connector styles-two of which are the SC and ST connectors.
ख B and C are incorrect. RJ-45 is used by twisted-pair cabling, and BNC is used by thinnet.

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Problem 18

$\square$ C. Single-mode fiber-optic cabling has a maximum distance of approximately $2 \mathrm{~km}$.
ख A, B, and D are incorrect distances for single-mode fiber, although 300 meters is the maximum distance of multimode fiber.

James Kiss
James Kiss
Numerade Educator
01:42

Problem 19

$\square$ D. Fiber-optic cabling is immune to outside interference and crosstalk.
ख A, B, and C are incorrect. Thinnet, thicknet, and twisted-pair cabling are susceptible to outside interference.

AK
Ankur Khosla
Numerade Educator

Problem 20

$\square$ B. The BNC connector is the connector used by 10 Base2.
ख A, C, and D are incorrect. The SC connector is used by fiber optic, the RJ-45 connector is used by twisted-pair, and the RJ-11 connector is used by the telephone cable.

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Problem 21

$\square$ A. To create a crossover cable, you would switch wire 1 and 2 with wire 3 and 6 on one end of the cable.
ख B, C, and D are incorrect. These combinations are not used to create crossover cables.

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Problem 22

. B B. Carrier-sense multiple access with collision detection (CSMA/CD) is the access method that 100BaseT uses. With CSMA/CD, a host will sense the wire to see if it is free; only if the wire is free of data will the host send data on the wire.
ख A, C, and D are incorrect. Baseband is not an access method. CSMA/CA and token passing are access methods but are not used by 100BaseT.

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Problem 23

\square$ D. Token Ring uses the token-passing access method. With token passing, a host must have the token before submitting data on the wire.
ख A, B, and C are incorrect. Baseband is not an access method, CSMA/CA is used in AppleTalk networks, and CSMA/CD is used in Ethernet environments.

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Problem 24

$\square$ D. Ethernet (CSMA/CD) is defined by IEEE 802.3
$\boxtimes$ A, B, and C are incorrect. These architectures are not defined by 802.3 , but be aware that Token Ring is defined by IEEE 802.5.

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Problem 25

$\square$ A. 1000 BaseLX uses single-mode fiber-optic cabling.
ख B, C, and D are incorrect. 1000BaseSX uses multimode fiber-optic cabling, 1000BaseCX uses coaxial cabling, and 1000Base TX uses CAT 5e or above.

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01:30

Problem 26

. $\square$ C. Following the 5-4-3 rule, you are allowed to have five network segments, joined by four repeaters, while three of those segments are populated with nodes.
ख A, B, and D are all incorrect because they are not the number of populated segments in a 10Base2 network.

James Kiss
James Kiss
Numerade Educator

Problem 27

E. 10BaseFL uses fiber-optic cabling. Remember to watch the characters at the end of the architecture name to determine what the cable type is- "FL" is for fiber link.
ख A, B, C, and D are incorrect. STP, thinnet, thicknet, and CAT 3 UTP are all cable types but are not used in 10BaseFL.

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Problem 28

$\square$ B. 1000 BaseSX uses multimode fiber cabling. Remember that multimode cannot go as far as single mode, and also the "SX" in the architecture is for "short range"-multimode for short range, single mode for long range.
ख A, C, and D are all incorrect. 1000BaseLX uses single-mode fiber, 1000BaseCX uses coaxial cable, and 1000Base TX uses twisted-pair.

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02:12

Problem 29

$\square$ D. Developed from the VMS platform many years ago, Microsoft Windows NT has grown into a very popular network operating system with a new and different interface.
ख A, B, and C are incorrect. The graphical interface and look and feel of the other operating systems in the Windows family made Windows NT very popular among users and network administrators. Windows 95 was simply a great enhancement of Windows for Workgroups. NetWare and UNIX were not based on VMS.

Aparna Shakti
Aparna Shakti
Numerade Educator
02:12

Problem 30

$\square$ A. Originally developed at Bell Labs, UNIX is a very popular operating system for powerful networking and database management. UNIX boasts three key features that make it powerful: multitasking, multiuser, and networking capabilities.
ख B, C, and D are incorrect. Windows 95 and NT were developed by Microsoft; NetWare was developed by Novell.

Aparna Shakti
Aparna Shakti
Numerade Educator

Problem 31

â–  A and D. Novell NetWare and Microsoft Windows Server 2003 are NOSs. The major difference between Windows servers and NetWare is at the server.
ख B and C are incorrect. Windows 98 and Windows XP are client operating systems and not true servers.

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Problem 32

B. Novell's directory service is known as NDS or eDirectory.
ख A, C, and D are incorrect. Active Directory is the name of Microsoft's directory service, DNS is the name of a service that performs FQDN-to-IP address name resolution, and Street Talk is Banyan's directory service.

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Problem 33

$\square$ A. Active Directory is the name of Microsoft's directory service.
ख B, C, and D are incorrect. Novell's directory service is known as NDS, DNS is the name of a service that performs FQDN-to-IP address name resolution, and StreetTalk is Banyan's directory service.

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