Deck 7: Local Area Networks: Part I

Question 1

A local area network cannot interface with other local area networks.

Answer 1

False

Question 2

Perhaps the strongest advantage of a local area network is its capability of allowing users to share hardware and software resources.

Answer 2

True

Question 3

The most popular example of a contention-based protocol is the token-passing protocol.

Answer 3

False

Question 4

The local area network first appeared in the 1950s.

Question 5

If the network is experiencing a high amount of traffic, the chances for collision are small.

Question 6

A hub is a simple device that requires virtually no overhead to operate.

Question 7

Most modern local area networks provide the capabilities of transferring video images and video streams.

Question 8

A hub is designed to perform much faster than a switch.

Question 9

Baseband signaling typically uses multiple digital signals to transmit data over the bus.

Question 10

One of the biggest advantages of local area networks is their ability to share resources in an economical and efficient manner.

Question 11

Switches can significantly decrease interconnection traffic and increase the throughput of the interconnected networks or segments.

Question 12

Hubs (and switches) support only twisted pair cable for interhub connection.

Question 13

The bus/tree topology was the first physical design used when local area networks became commercially available in the late 1970s.

Question 14

A local area network is only as strong as its strongest link.

Question 15

All bus networks share a major disadvantage: In general, it is difficult to add a new workstation if no tap currently exists.

Question 16

A cut-through switch does not store a data frame and then forward it.

Question 17

With the CSMA/CD protocol, only one workstation at a time can transmit.

Question 18

Most switches are transparent, which means they learn by themselves.

Question 19

By keeping all of the application on the server, the network can control access to the software and can reduce the amount of disk storage required on each user's workstation for this application.

Question 20

The hub, in most applications, has been replaced with the switch.

Question 21

The logical link control sublayer defines the layout or format of the data frame, simply called the frame.

Question 22

More complex bus topologies consisting of multiple interconnected cable segments are termed ____.

A)tokens
B)stars
C)rings
D)trees

Question 23

A local area network performs file serving when it's connected to a workstation with a large storage disk drive that acts as a central storage repository, or ____ server.

A)file
B)printer
C)database
D)application

Question 24

Early local area networks transmitted data at only ____ million bits per second.

A)1
B)10
C)100
D)1000

Question 25

____ cabling has become the preferred medium for star-wired bus topologies.

A)Twisted pair
B)Coaxial
C)Fiber-optic
D)FDDI

Question 26

The ____ topology consists of a simple cable, or bus, to which all devices attach.

A)bus/tree
B)token ring
C)ring star
D)star

Question 27

The most popular configuration for a local area network is the ____ topology.

A)ring
B)star-wired bus
C)bus
D)tree

Question 28

The spanning tree algorithm allows you to run cable spans between two or more networks.

Question 29

Switches can be used in combination with routers to further isolate traffic segments in a local area network.

Question 30

The local area network software called a ____ server provides workstations with the authorization to access a particular printer, accepts and queues prints jobs, prints cover sheets, and allows users access to the job queue for routine administrative functions.

A)application
B)database
C)file
D)print

Question 31

In a bus/tree topology, connecting to the cable requires a simple device called a(n) ____.

A)hub
B)router
C)tap
D)echo suppressor

Question 32

The term "Base", such as in 100BaseT, is an abbreviation for baseband signals using a Manchester encoding.

Question 33

The ____ design of a network determines how the data moves around the network from workstation to workstation.

A)electrical
B)data
C)physical
D)logical

Question 34

The Fast Ethernet standards are based on 1000-Mbps transmission speeds, or 1 gigabit (1 billion bits) per second.

Question 35

Two different signaling technologies can be used with a bus network: baseband signaling and ____ signaling.

A)multiband
B)broadband
C)uniband
D)singleband

Question 36

The 802.11 specification defined six different types of physical layer connections.

Question 37

In a shared segment network, each workstation then has a private or dedicated connection.

Question 38

Using coaxial cable to transmit analog signals, 10Broad36 can transmit data at 10 Mbps for a maximum segment distance of 3600 meters.

Question 39

Link aggregation allows you to combine two or more data paths, or links, into one higher-speed link.

Question 40

Three of the most popular local area network systems are Ethernet, IBM Token Ring, and Wireless Ethernet.

Question 41

The ____ is used to connect local area networks to wide area networks.

A)hub
B)repeater
C)router
D)bridge

Question 42

The IEEE 802.3z standards are also known as ____ Ethernet.

A)Switch
B)Fast
C)Gigabit
D)Terabit

Question 43

IEEE created the 100-Mbps Ethernet 802.3u protocol also called ____ Ethernet.

A)Fast
B)Gigabit
C)Terabit
D)FDDI

Question 44

A ____ system transmits 10-Mbps baseband (digital) signals over twisted pair for a maximum of 100 meters per segment length.

A)1Base5
B)10Broad36
C)10BaseT
D)100BaseTX

Question 45

The ____ standard was one of the first Ethernet standards approved.

A)10Broad36
B)10Base5
C)100BaseTX
D)100BaseT4

Question 46

When two or more hubs are interconnected and a workstation transmits data, all the workstations connected to all the hubs receive the data. This is an example of a(n) ____.

A)wireless topology
B)switched network
C)shared network
D)FDDI topology

Question 47

A(n) ____ protocol is the software that allows a workstation to place data onto a local area network.

A)error control
B)noise control
C)medium access control
D)flow control

Question 48

The switch operates in place of a ____.

A)repeater
B)bridge
C)router
D)hub

Question 49

____ was the first commercially available local area network system and remains, without a doubt, the most popular local area network system today.

A)Ethernet
B)IBM Token Ring
C)FDDI
D)Wireless Ethernet

Question 50

In a ____ architecture, the data frame begins to exit the switch almost as soon as it begins to enter the switch.

A)forward
B)backward
C)cut-through
D)random-propagation

Question 51

A ____ is a device that interconnects two or more workstations in a star-wired bus local area network and immediately retransmits the data it receives from any workstation out to all other workstations connected.

A)hub
B)switch
C)router
D)repeater

Question 52

____ was a system designed for twisted pair wiring, but with only a 1-Mbps data transfer rate for 500 meters.

A)10BaseT
B)10Broad36
C)100BaseTX
D)1Base5

Question 53

A transparent bridge creates the internal port table by using a form of ____.

A)forward learning
B)backward correction
C)backward learning
D)forward correction

Question 54

The ____ sublayer is primarily responsible for logical addressing and providing error control and flow control information.

A)medium access control (MAC)
B)physical access control (PAC)
C)medium physical control (MPC)
D)logical link control (LLC)

Question 55

A ____ is a device that interconnects two segments of local area networks and acts as a filter.

A)hub
B)switch
C)router
D)satellite

Question 56

With ____, you can send electrical power over the Ethernet connection.

A)1Base5
B)power over Ethernet (PoE)
C)10GBase-fiber
D)FDDI

Question 57

The most popular contention-based protocol is ____.

A)token ring
B)round-robin
C)carrier sense multiple access with collision avoidance (CSMA/CA)
D)carrier sense multiple access with collision detection (CSMA/CD)

Question 58

The ____ sublayer contains a header, computer (physical) addresses, error-detection codes, and control information.

A)logical link control (LLC)
B)logical flow control (LFC)
C)medium access control (MAC)
D)physical link control (PLC)

Question 59

____ was the standard created for fiber-optic systems.

A)1Base5
B)10BaseTX
C)100BaseTX
D)100BaseFX

Question 60

The interval during which the signals propagate down the bus and back is the ____.

A)exponential backoff
B)collision window
C)attenuation
D)bounce window

Question 61

To promote acceptance, the ____________________ suite of protocols was created to support the many different types of wireless local area networks in existence.

Question 62

____________________ (nicknamed Cheapernet) was designed to allow for a less-expensive network by using less-expensive components.

Question 63

Whether shared or dedicated segments are involved, the primary goal of a(n) ____ is to isolate a particular pattern of traffic from other patterns of traffic or from the remainder of the network.

A)hub
B)switch
C)repeater
D)amplifier

Question 64

Depending on user requirements, a switch can interconnect two different types of CSMA/CD network segments: ____ segments and dedicated segments.

A)shared
B)remote
C)local
D)distributed

Question 65

____________________ means that when the signal is transmitted from a given workstation, the signal propagates away from the source in both directions on the cable.

Question 66

The ______________________________ is an electronic device that performs the necessary signal conversions and protocol operations that allow the workstation to send and receive data on the network.

Question 67

A(n) ____________________ protocol is basically a first-come, first-served protocol.

Question 68

One of the most common standards for broadband (analog) Ethernet was the ____________________ specification.

Question 69

In IEEE 802.3 standard for CSMA/CD, frames shorter than 64 bytes are considered ____________________, or frame fragments.

Question 70

A(n) ____________________ occurs when two or more workstations listen to the medium at the same moment, hear nothing, and then transmit their data at the same moment.

Question 71

A(n) ____________________ protocol is one in which you cannot calculate the time at which a workstation will transmit.

Question 72

In ____ segment networks, a switch may be directly connected to a workstation, and the switch connects to the hub.

A)shared
B)dedicated
C)distributed
D)remote

Question 73

A(n) _________________________ is a communications network that interconnects a variety of data communications devices within a small geographic area and broadcasts data at high data transfer rates.

Question 74

The tap is a(n) ____________________, as it does not alter the signal and does not require electricity to operate.

Question 75

A(n) ____________________ is the physical (hardware) layout used to interconnect the workstations within a local area network.

Question 76

A relatively new standard, IEEE ____, was designed to allow multiple devices to intercommunicate and work together to create a virtual LAN.

A)802.1a
B)802.1g
C)802.1P
D)802.1Q

Question 77

________________ allows you to combine two ore more data paths, or links, into one higher-speed link.

A)The Spanning Tree Algorithm
B)Link aggreation
C)A virtual LAN
D)Quality of service

Question 78

The ____________________ design refers to the pattern formed by the locations of the elements of the network, as it would appear if drawn on a sheet of paper.

Question 79

If a switch has eight 100-Mbps ports, the backplane has to support a total of ____ Mbps.

A)200
B)400
C)600
D)800

Question 80

One of the more interesting applications for a dedicated segment network and a switch is creating a ____.

A)virtual LAN
B)dedicated LAN
C)shared LAN
D)local LAN