Deck 7: Wired and Wireless Local Area Networks

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Question
Ethernet is a layer 3 protocol, which operates at the network layer.
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Question
A hardware device that is not included in a network profile cannot be accessed by another computer on the network.
Question
The NOS software for the server computer provides the physical, data link, and network layer functions.
Question
LDAP is an industry standard directory protocol.
Question
An access point plays the same role in a wireless network as a router does in a wired Ethernet network.
Question
Many network hubs and switches incorporate repeaters to regenerate signals so that attenuation of the signal does not occur.
Question
Fiber optic cable is thicker and heavier than unshielded twisted pair.
Question
The Ethernet standard was first developed by the IEEE.
Question
A switch always broadcasts all the packets it receives to all the computers that are connected to the switch.
Question
1000Base-LX is a version of 1000Base-T than runs on four pairs of CAT 5 cable.
Question
The term "domain controller" is a name commonly used to refer to a Microsoft directory services server.
Question
LANs that run on radio frequencies use a type of wired media.
Question
Hub-based Ethernet is a star physical topology and a bus logical topology.
Question
Network profile refers to what resources on each server are available on the network for use by other computers and which devices or people are allowed access on the network.
Question
The three latest versions of Ethernet run at speeds of 1Gbps, 10Gbps, and 50 Gbps.
Question
STP cable is least costly type of cable used in today's networks and is the most commonly used cable type in connecting computers to switches.
Question
Physical topology refers to the geometric layout of the network and describes how the computers are interconnected.
Question
A collision on a bus circuit means that two computers on that circuit have transmitted at the same time.
Question
The Network Interface Card NIC) permits a computer to be physically connected to a network's cable.
Question
One of the most important functions of Network Operating System NOS) is a directory service.
Question
An access point ensures that all computers within range of the access point can communicate with each other,
Question
Distributed Coordination Function is a media access control method used in wireless LANs where the sender waits for an ACK acknowledgement) from the receiver before transmitting any more packets.
Question
11n LANs operate at speeds up to 600 Mbps.
Question
Directional antennas signals are much stronger than omnidirectional antennas.
Question
Wireless LANs are never connected to a wired network.
Question
A switch can send and receive on all circuits simultaneously.
Question
A forwarding table tells a switch which port it should send out a packet to get to the destination computer.
Question
11b is a faster wireless standard than 802.11a.
Question
The DCF function of Wi-Fi resolves the hidden node problem.
Question
11a provides for speeds of up to 54 Mbps under perfect conditions.
Question
The frequency ranges of some access points are the same as some cordless telephones.
Question
Most access points AP) deployed in wireless LANs use directional antennas.
Question
Point Coordination Function requires that each station that wishes to transmit on the wireless network sends a request-to-transmit RTS) packet to the access point and waits for a clear-to-send CTS) packet from the AP before it can communicate with other nodes on the network.
Question
Cut-through switching has fewer errors than store and forward switching.
Question
Wireless LANs use Carrier Sense Multiple Access with Collision Detection CSMA/CD)
for medic access control.
Question
11b provides three separate channels for indoor use in the U.S.that can be used for communication between the access point and other wireless devices on the network.
Question
The maximum data rate of 802.11b LANs is 12 Mbps.
Question
An access point AP) is required to connect a WLAN to a wired network.
Question
Store and forward switching may only be used when the incoming and outgoing data circuit have the same data rate.
Question
When a switch receives an Ethernet frame with a destination address that is not in its forwarding table, the switch will broadcast the frame out all of its other ports.
Question
The maximum transmission speed of 802.11a LANs is 11 Mbps.
Question
Directional antennas produce a stronger signal over longer distances than omnidirectional antennas.
Question
11a LANs provide more channels than 802.11b LANs
Question
Wireless LANs do not share the bandwidth capacity of the wireless network.
Question
It takes 802.11a more access points to provide the same coverage as one 802.11b access point.
Question
An) ____________ allows many users to share the same set of files on a common, shared disk drive.

A)print server
B)database server
C)file server
D)piconet server
E)remote access server
Question
An) _____________ is not a common type of dedicated server.

A)file server
B)print server
C)database server
D)collision server
E)web server
Question
An 802.11g NIC can communicate with an 802.11n access point operating in mixed mode.
Question
Wi-Fi Protected Access WPA) uses the same key for every packet that is transmitted to the client.
Question
A site survey is not an important component of a WLAN design.
Question
Which of the following type of media is most commonly used in backbone networks because of its high capacity?

A)fiber
B)infrared frequencies
C)coax cable
D)unshielded twisted pair
E)shielded twisted pair
Question
Which of the following is not a basic LAN component?

A)client
B)PAD
C)server
D)network interface card
E)network operating system
Question
Which of the following is not a purpose for using hubs in a network?

A)to act as a communications server
B)to connect network cables
C)to prevent attenuation
D)to act as a junction box
E)none of the above
Question
Which of the following is not an advantage of using Cat5 unshielded twisted pair for cabling LANs?

A)cost relative to fiber)
B)thickness relative to coax)
C)weight relative to coax)
D)flexibility relative to coax)
E)security relative to fiber)
Question
Compared to 802.11b, 802.11g provides fewer channels for stations to communicate with the access point.
Question
Of the following, which is not true about fiber optic cable?

A)it is thinner than unshielded twisted pair cable
B)it is lighter than unshielded twisted pair cable
C)it has a very low capacity
D)it is more expensive than CAT5 unshielded twisted pair cable
E)it is a type of guided media
Question
The data link layer protocols used by wireless LANs are similar to the ones used on Ethernet LANs
Question
Hubs:

A)usually incorporate repeaters or amplifiers
B)allow for simultaneous communication for all of the computers connected to them
C)limit the distance of a network to a few meters in length
D)are a difficult method to connect network cables
E)operate at the application layer
Question
Wired Equivalent Privacy requires that each user have a preconfigured key in order to communicate with an access point.
Question
_____________ is the software that controls the network.

A)Network Operating System
B)Client Operating System
C)Embedded Operating System
D)Network Control System
E)Network Software System
Question
A switch uses a _____________ that is very similar to a routing table used in a router.

A)cable plan
B)forwarding table
C)network server
D)reversing table
E)switching mullion
Question
___________ is how the network works conceptually.

A)Physical topology
B)Logical topology
C)Network topology
D)Ethernet
E)Media access control
Question
A hierarchical tree of active directory domains within one organization that is linked to other trees in the organization is called a ___________.

A)ADS
B)domain
C)forest
D)tree
E)NDS
Question
Which of the following is not true about CSMA/CD?

A)The acronym refers to Carrier Sense Multiple Access with Collision Detection
B)It is used in token ring protocol LANs
C)It is a contention-based media access control technique
D)When a collision has occurred, the computers that wish to transmit wait a random amount of time after a colliding message before attempting to retransmit
E)Computers on the circuit 'listen' before transmitting
Question
100 Base-T:

A)can run at either full- or half-duplex
B)is one of the oldest forms of Ethernet
C)is one of the slowest forms of Ethernet
D)can only be used over coaxial cables
E)has only one version, 100Base-SLCX
Question
A _________ is a group of centrally organized, related resources.

A)workgroup
B)domain
C)server
D)client
E)sharepoint
Question
Ethernet LAN was developed by:

A)IBM
B)ARPANET
C)DEC, Xerox, and Intel
D)University of Minnesota
E)CERN laboratory in Geneva
Question
_____________ provide information about resources on the network that are available to the users, such as shared printers, file servers and application software.

A)Network Services
B)Directory Services
C)Client Services
D)Computing Services
E)Remote Access Services
Question
A __________ indicates what resources on each server are available on the network for use by other computers and what people are allowed what access to the network.

A)user profile
B)user access log
C)network profile
D)network operating system
E)server allocation list
Question
The cheapest time to install network cabling is:

A)during the construction of the building
B)as soon as the building is completed
C)as soon as the building is occupied
D)about five years after the building is occupied so that the exact office locations for each network computer is known
E)any time that a network needs to be installed
Question
Switch-based Ethernet:

A)uses a hub to connect computers
B)has a physical topology of a ring
C)has a logical topology of a ring
D)has a logical topology of a bus
E)usually enables all attached circuits to send or receive packets simultaneously
Question
The server version of the Network Operating System does not:

A)provide the software that performs the functions associated with the physical layer
B)provide the software that performs the functions associated with the data link layer
C)provide the software that performs the functions associated with the application layer
D)provide the software that performs the functions associated with the network layer
E)usually provide the software that performs the functions associated with the computer's own operating system
Question
________ is a hybrid version of Ethernet that uses either 10Base-T, 100Base-T, or 1000Base-T.

A)Mullion Ethernet
B)Base-T Ethernet
C)10/100/1000 Ethernet
D)Token ring Ethernet
E)FDDI Ethernet
Question
A logical bus topology:

A)is always used by token ring protocol LANs
B)has all computers connected to each other in point-to-point connections
C)is limited to short distances since devices like a hub or repeater cannot be used with this type of topology
D)permits every message to be received by every computer on the bus, even when those messages are intended for other computers
E)has a central control device, such as a mainframe
Question
Which of the following is not true about layer-2 switched Ethernet?

A)A switch replaces the hub.
B)The physical topology is the same as the physical topology of shared Ethernet: a ring.
C)The logical topology is a star.
D)The switch uses a forwarding table to switch the frame to the correct circuit/computer.
E)The switch chooses which frame to transmit first if it receives more than one frame destined for the same computer at the same time, and stores the other frames) temporarily.
Question
_________ is not a type of Ethernet specification.

A)100Base-T
B)10GbE
C)1000Base-T 1GbE)
D)10Base-T
E)Securenet
Question
100Base-T:

A)supports 100 Mbps data rate
B)is inexpensive
C)runs on twisted pair
D)is more dominant than token ring
E)all of the answers are correct
Question
Media access control refers to:

A)the price of fiber optic cable
B)security over floppy disks in a user environment
C)the ability for a user to use multimedia equipment in a LAN
D)controlling access to a media by more than one computer in a LAN
E)the control over coax cable installed by a cable service provider
Question
The type of logical topology that hub-based Ethernet uses is a:

A)ring
B)bus
C)star
D)mesh
E)interconnected
Question
Which of the following is not true about switched Ethernet?

A)The switch has a physical bus topology.
B)It uses a switch instead of a hub.
C)Most switches support full duplex circuits.
D)It essentially provides a point-to-point connection between computers.
E)It has forwarding tables in which entries are learned over time.
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Deck 7: Wired and Wireless Local Area Networks
1
Ethernet is a layer 3 protocol, which operates at the network layer.
False
2
A hardware device that is not included in a network profile cannot be accessed by another computer on the network.
True
3
The NOS software for the server computer provides the physical, data link, and network layer functions.
False
4
LDAP is an industry standard directory protocol.
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5
An access point plays the same role in a wireless network as a router does in a wired Ethernet network.
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6
Many network hubs and switches incorporate repeaters to regenerate signals so that attenuation of the signal does not occur.
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7
Fiber optic cable is thicker and heavier than unshielded twisted pair.
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8
The Ethernet standard was first developed by the IEEE.
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9
A switch always broadcasts all the packets it receives to all the computers that are connected to the switch.
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10
1000Base-LX is a version of 1000Base-T than runs on four pairs of CAT 5 cable.
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11
The term "domain controller" is a name commonly used to refer to a Microsoft directory services server.
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12
LANs that run on radio frequencies use a type of wired media.
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13
Hub-based Ethernet is a star physical topology and a bus logical topology.
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14
Network profile refers to what resources on each server are available on the network for use by other computers and which devices or people are allowed access on the network.
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15
The three latest versions of Ethernet run at speeds of 1Gbps, 10Gbps, and 50 Gbps.
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16
STP cable is least costly type of cable used in today's networks and is the most commonly used cable type in connecting computers to switches.
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17
Physical topology refers to the geometric layout of the network and describes how the computers are interconnected.
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18
A collision on a bus circuit means that two computers on that circuit have transmitted at the same time.
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19
The Network Interface Card NIC) permits a computer to be physically connected to a network's cable.
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20
One of the most important functions of Network Operating System NOS) is a directory service.
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21
An access point ensures that all computers within range of the access point can communicate with each other,
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22
Distributed Coordination Function is a media access control method used in wireless LANs where the sender waits for an ACK acknowledgement) from the receiver before transmitting any more packets.
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23
11n LANs operate at speeds up to 600 Mbps.
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24
Directional antennas signals are much stronger than omnidirectional antennas.
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25
Wireless LANs are never connected to a wired network.
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26
A switch can send and receive on all circuits simultaneously.
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27
A forwarding table tells a switch which port it should send out a packet to get to the destination computer.
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28
11b is a faster wireless standard than 802.11a.
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29
The DCF function of Wi-Fi resolves the hidden node problem.
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30
11a provides for speeds of up to 54 Mbps under perfect conditions.
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31
The frequency ranges of some access points are the same as some cordless telephones.
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32
Most access points AP) deployed in wireless LANs use directional antennas.
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33
Point Coordination Function requires that each station that wishes to transmit on the wireless network sends a request-to-transmit RTS) packet to the access point and waits for a clear-to-send CTS) packet from the AP before it can communicate with other nodes on the network.
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34
Cut-through switching has fewer errors than store and forward switching.
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35
Wireless LANs use Carrier Sense Multiple Access with Collision Detection CSMA/CD)
for medic access control.
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36
11b provides three separate channels for indoor use in the U.S.that can be used for communication between the access point and other wireless devices on the network.
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37
The maximum data rate of 802.11b LANs is 12 Mbps.
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38
An access point AP) is required to connect a WLAN to a wired network.
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39
Store and forward switching may only be used when the incoming and outgoing data circuit have the same data rate.
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40
When a switch receives an Ethernet frame with a destination address that is not in its forwarding table, the switch will broadcast the frame out all of its other ports.
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41
The maximum transmission speed of 802.11a LANs is 11 Mbps.
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42
Directional antennas produce a stronger signal over longer distances than omnidirectional antennas.
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43
11a LANs provide more channels than 802.11b LANs
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44
Wireless LANs do not share the bandwidth capacity of the wireless network.
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45
It takes 802.11a more access points to provide the same coverage as one 802.11b access point.
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46
An) ____________ allows many users to share the same set of files on a common, shared disk drive.

A)print server
B)database server
C)file server
D)piconet server
E)remote access server
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47
An) _____________ is not a common type of dedicated server.

A)file server
B)print server
C)database server
D)collision server
E)web server
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48
An 802.11g NIC can communicate with an 802.11n access point operating in mixed mode.
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49
Wi-Fi Protected Access WPA) uses the same key for every packet that is transmitted to the client.
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50
A site survey is not an important component of a WLAN design.
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51
Which of the following type of media is most commonly used in backbone networks because of its high capacity?

A)fiber
B)infrared frequencies
C)coax cable
D)unshielded twisted pair
E)shielded twisted pair
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52
Which of the following is not a basic LAN component?

A)client
B)PAD
C)server
D)network interface card
E)network operating system
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53
Which of the following is not a purpose for using hubs in a network?

A)to act as a communications server
B)to connect network cables
C)to prevent attenuation
D)to act as a junction box
E)none of the above
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54
Which of the following is not an advantage of using Cat5 unshielded twisted pair for cabling LANs?

A)cost relative to fiber)
B)thickness relative to coax)
C)weight relative to coax)
D)flexibility relative to coax)
E)security relative to fiber)
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55
Compared to 802.11b, 802.11g provides fewer channels for stations to communicate with the access point.
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56
Of the following, which is not true about fiber optic cable?

A)it is thinner than unshielded twisted pair cable
B)it is lighter than unshielded twisted pair cable
C)it has a very low capacity
D)it is more expensive than CAT5 unshielded twisted pair cable
E)it is a type of guided media
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57
The data link layer protocols used by wireless LANs are similar to the ones used on Ethernet LANs
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58
Hubs:

A)usually incorporate repeaters or amplifiers
B)allow for simultaneous communication for all of the computers connected to them
C)limit the distance of a network to a few meters in length
D)are a difficult method to connect network cables
E)operate at the application layer
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59
Wired Equivalent Privacy requires that each user have a preconfigured key in order to communicate with an access point.
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k this deck
60
_____________ is the software that controls the network.

A)Network Operating System
B)Client Operating System
C)Embedded Operating System
D)Network Control System
E)Network Software System
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61
A switch uses a _____________ that is very similar to a routing table used in a router.

A)cable plan
B)forwarding table
C)network server
D)reversing table
E)switching mullion
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62
___________ is how the network works conceptually.

A)Physical topology
B)Logical topology
C)Network topology
D)Ethernet
E)Media access control
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k this deck
63
A hierarchical tree of active directory domains within one organization that is linked to other trees in the organization is called a ___________.

A)ADS
B)domain
C)forest
D)tree
E)NDS
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64
Which of the following is not true about CSMA/CD?

A)The acronym refers to Carrier Sense Multiple Access with Collision Detection
B)It is used in token ring protocol LANs
C)It is a contention-based media access control technique
D)When a collision has occurred, the computers that wish to transmit wait a random amount of time after a colliding message before attempting to retransmit
E)Computers on the circuit 'listen' before transmitting
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65
100 Base-T:

A)can run at either full- or half-duplex
B)is one of the oldest forms of Ethernet
C)is one of the slowest forms of Ethernet
D)can only be used over coaxial cables
E)has only one version, 100Base-SLCX
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Unlock for access to all 139 flashcards in this deck.
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k this deck
66
A _________ is a group of centrally organized, related resources.

A)workgroup
B)domain
C)server
D)client
E)sharepoint
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Unlock for access to all 139 flashcards in this deck.
Unlock Deck
k this deck
67
Ethernet LAN was developed by:

A)IBM
B)ARPANET
C)DEC, Xerox, and Intel
D)University of Minnesota
E)CERN laboratory in Geneva
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Unlock for access to all 139 flashcards in this deck.
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k this deck
68
_____________ provide information about resources on the network that are available to the users, such as shared printers, file servers and application software.

A)Network Services
B)Directory Services
C)Client Services
D)Computing Services
E)Remote Access Services
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Unlock for access to all 139 flashcards in this deck.
Unlock Deck
k this deck
69
A __________ indicates what resources on each server are available on the network for use by other computers and what people are allowed what access to the network.

A)user profile
B)user access log
C)network profile
D)network operating system
E)server allocation list
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Unlock for access to all 139 flashcards in this deck.
Unlock Deck
k this deck
70
The cheapest time to install network cabling is:

A)during the construction of the building
B)as soon as the building is completed
C)as soon as the building is occupied
D)about five years after the building is occupied so that the exact office locations for each network computer is known
E)any time that a network needs to be installed
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Unlock for access to all 139 flashcards in this deck.
Unlock Deck
k this deck
71
Switch-based Ethernet:

A)uses a hub to connect computers
B)has a physical topology of a ring
C)has a logical topology of a ring
D)has a logical topology of a bus
E)usually enables all attached circuits to send or receive packets simultaneously
Unlock Deck
Unlock for access to all 139 flashcards in this deck.
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k this deck
72
The server version of the Network Operating System does not:

A)provide the software that performs the functions associated with the physical layer
B)provide the software that performs the functions associated with the data link layer
C)provide the software that performs the functions associated with the application layer
D)provide the software that performs the functions associated with the network layer
E)usually provide the software that performs the functions associated with the computer's own operating system
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73
________ is a hybrid version of Ethernet that uses either 10Base-T, 100Base-T, or 1000Base-T.

A)Mullion Ethernet
B)Base-T Ethernet
C)10/100/1000 Ethernet
D)Token ring Ethernet
E)FDDI Ethernet
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74
A logical bus topology:

A)is always used by token ring protocol LANs
B)has all computers connected to each other in point-to-point connections
C)is limited to short distances since devices like a hub or repeater cannot be used with this type of topology
D)permits every message to be received by every computer on the bus, even when those messages are intended for other computers
E)has a central control device, such as a mainframe
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75
Which of the following is not true about layer-2 switched Ethernet?

A)A switch replaces the hub.
B)The physical topology is the same as the physical topology of shared Ethernet: a ring.
C)The logical topology is a star.
D)The switch uses a forwarding table to switch the frame to the correct circuit/computer.
E)The switch chooses which frame to transmit first if it receives more than one frame destined for the same computer at the same time, and stores the other frames) temporarily.
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76
_________ is not a type of Ethernet specification.

A)100Base-T
B)10GbE
C)1000Base-T 1GbE)
D)10Base-T
E)Securenet
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77
100Base-T:

A)supports 100 Mbps data rate
B)is inexpensive
C)runs on twisted pair
D)is more dominant than token ring
E)all of the answers are correct
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78
Media access control refers to:

A)the price of fiber optic cable
B)security over floppy disks in a user environment
C)the ability for a user to use multimedia equipment in a LAN
D)controlling access to a media by more than one computer in a LAN
E)the control over coax cable installed by a cable service provider
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79
The type of logical topology that hub-based Ethernet uses is a:

A)ring
B)bus
C)star
D)mesh
E)interconnected
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80
Which of the following is not true about switched Ethernet?

A)The switch has a physical bus topology.
B)It uses a switch instead of a hub.
C)Most switches support full duplex circuits.
D)It essentially provides a point-to-point connection between computers.
E)It has forwarding tables in which entries are learned over time.
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Unlock Deck
Unlock for access to all 139 flashcards in this deck.