CH 7, 8 ,9 Business Data & Communications

1.     A(n) _____________ is not a common type of dedicated server.

 

a.   file server

b.   print server

c.   database server

d.   collision server

e.   web server

D

1.     A(n) ____________ 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

C

1.     Which of the following is not a basic LAN component?

a.   client

b.   PAD

c.   server

d.   network interface card

e.   network operating system

B

1.     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)

E

1.     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.

C

1.     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

A

1.     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

A

1.     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

A

1.     _____________ 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

A

1.     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.

A

1.     _____________ 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

B

1.     A _________ is a group of centrally organized, related resources.

 

a.   workgroup

b.   domain

c.   server

d.   client

e.   sharepoint

B

1.     A hierarchical tree of active directory domains within one organization that is linked to other trees in the organization is called a/n ___________.

 

a.   ADS

b.   domain

c.   forest

d.   tree

e.   NDS

C

1.     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

C

1.     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.

A

1.     Ethernet LAN was developed by:

a.   IBM.

b.   ARPANET.

c.   DEC, Xerox, and Intel.

d.   University of Minnesota.

e.    CERN laboratory in Geneva

C

1.     ___________ is how the network works conceptually.

 

a.   Physical topology

b.   Logical topology

c.   Network topology

d.   Ethernet

e.   Media access control

B

1.     The type of logical topology that hub-based Ethernet uses is a:

 

a.   ring

b.   bus

c.   star

d.   mesh

e.   interconnected

B

1.     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.

D

1.     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.

D

1.     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

B

1.     _________ is not a type of Ethernet specification.

 

a.   100Base-T

b.   10GbE

c.   1000Base-T (1GbE)

d.   10Base-T

e.   Securenet

E

1.     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

E

1.     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

A

1.     ________ 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

C

 

1.     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

E

1.     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

B

 

1.     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 frame(s) temporarily.

B

1.     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.

A

1.     Which of the following is a mode in which a switch reads in the first 64 bytes of the Ethernet frame and then begins forwarding out the frame on an outgoing port?

 

a.   fast learning switching

b.   routing switching

c.   fragment-free switching

d.   store switching

e.   cut switching

C

1.     Each of the full duplex circuits connected to a switch is a separate _______________ circuit connecting the switch to a device on the network.

 

a.   multipoint

b.   point-to-point

c.   shared

d.   ring

e.   star

B

1.     Wired Ethernet is becoming a _______________ technology for small SOHO devices, meaning that manufacturers are no longer creating new products. .

 

a.   host

b.   legacy

c.   caching

d.   hub

e.   peak

B

1.     Which of the following can provide fault tolerance for the storage space on a server?

 

a.   RAID

b.   SCSI

c.   IDE

d.   USB

e.   EIDE

A

1.     Which of the following is not a potential bottleneck for LAN performance?

 

a.   number and speed of hard disks in the server

b.   amount of memory in the server

c.   speed of server’s CPU

d.   network interface card

e.   all of the answers are potential bottlenecks for LAN performance

E

1.     If your LAN server is overloaded, which of the following should you not consider (to solve the server problem)?

 

a.   adding one or more additional servers

b.   upgrading the server’s CPU with a faster CPU

c.   increasing the amount of memory of the server

d.   increasing the number and speed of hard disks in the server

e.   replacing the cable with fiber optic cable

E

1.     To increase the volume of simultaneous messages the LAN circuit can transmit from network clients to the server(s), you can:

 

a.   increase the CPU of the server

b.   upgrade to a bigger circuit

c.   increase the number of hard disks on the server

d.   increase the amount of disk capacity of the server

e.   increase the amount of memory of the server

B

1.     Breaking a network into smaller parts is called network:

 

a.   fragmentation

b.   segmentation

c.   localization

d.   allocation

e.   mitigation

B

1.     Which of the following is not an effective way to reduce LAN network demand:

a.   move files to client computers

b.   use disk caching on the client machines

c.   find an application that places a large demand on the network and run it a time when the network is lightly loaded

d.   add hidden nodes

e.   shift the users’ routines

D

1.     Which of the following is not a WLAN standard?

 

a.         802.11ac

b.         802.11a

c.         802.3

d.         802.11b

e.         802.11g

C

1.     The IEEE designation for the type of wireless standard that uses both the 2.4 and 5 GHz range is __________.

 

a.   802.11n

b.   802.11a

c.   802.3

d.   802.11b

e.   802.11g

a

1.     A(n) _____________ is used in a computer to connect it to a WLAN.

 

a.   Ethernet NIC

b.   antennae

c.   wireless NIC

d.   access point

e.   hub

C

1.     A(n) ___________ is a radio transceiver that plays the same role as a hub or switch in a wired network and connects the WLAN to the wired network.

 

a.   Ethernet NIC

b.   antennae

c.   wireless NIC

d.   access point

e.   hub

D

1.     How many channels does the 802.11ac standard provide for communication between the access point and clients?

 

a.   4

b.   6

c.   8

d.   11

e.   2

C

1.     __________ antennas transmit the signal in all directions.

 

a.   directional

b.   microware

c.   omnidirectional

d.   radio

e.   vertical

C

1.     __________ antennas project a signal in only one direction and are most often used on the inside of an exterior wall pointing to the inside of the building for security reasons.

 

a.   directional

b.   microware

c.   omnidirectional

d.   radio

e.   vertical

A

1.     CSMA/CA is an acronym for:

 

a.   Carrier Sense Multiple Access with Collision Acknowledgment

b.   Carrier Sense Mode Access with Carrier Avoidance

c.   Carrier Sense Multiple Access with Collision Avoidance

d.   Carrier Sensory Multiple Access without Collision Acknowledgment

e.   Carrier Sense Multiple Acknowledgment with Collision Avoidance

C

1.     Another name for distributed coordination function (DCF) is __________.

 

a.   distributed carrier sense method

b.   physical carrier sense method

c.   physical carrier sense mode

d.   distributed carrier sense mode

e.   distributed coordination mode

B

1.     When a computer transmits at the same time because it cannot sense that another computer on the WLAN is currently transmitting is referred to as the:

 

a.   out of range problem

b.   collision problem

c.   hidden node problem

d.   controlled access problem

e.   media access problem

C

1.     The maximum data rate of a an 802.11ad WLAN is

 

a.   24 Mbps

b.   36 Mbps

c.   11 Mbps

d.   7Gbps

e.   9 Mbps

D

1.      Many organizations today are installing traditional wired Ethernet for desktop users and install Wi-Fi as ______________.

 

a.   overlay networks

b.   Bluetooth

c.   cellular networks

d.   mobile networks

e.   Ethernet networks

A

1.     Which of the following is not determined by a site survey?

 

a.   feasibility of the desired coverage

b.   potential sources of interference

c.   the security of the WLAN

d.   estimated number of access points needed to provide coverage

e.   current locations of the wired network into which the WLAN will connect.

C

1.     _____________ refers to practice of writing symbols in chalk on sidewalks and walls to indicate the presence of an unsecured WLAN.

 

a.   Wardriving

b.   Chalking

c.   Warchalking

d.   Marking

e.   Identifying

C

1.     With _____________, the AP permits the owner to provide a list of valid addresses that can connect.

 

a.   EAP

b.   SSID

c.   WEP

d.   MAC address filtering

e.   SWEP

D

1.     IEEE 802.11ac runs on two different frequency spectrums simultaneously. Which of the following are those two frequencies?

 

a.   2.4GHz and 5GHz

b.   24GHz and 5GHz

c.   11GHz and 54GHz

d.   8GHz and 11GHz

e.   2.4GHz and 11GHz

A

1.     WiGig is standardized as

 

a.   IEEE 802.11ad

b.   IEEE 802.11ac

c.   IEEE 802.11n

d.   IEEE 802.11g

e.   IEEE 802.11a

A

1.     The ___________ is where the organization housing its primary servers.

 

a.   MDF

b.   guest house

c.   SOHO network

d.   data center

e.   load balancer

D

1.     The ________ acts as a router at the front of the server farm.

 

a.   load router

b.   MDF

c.   Layer 2 switch

d.   front-end loader

e.   load balancer

E

1.     ____ is the process of creating several logically separate servers on the same physical computer.

 

a.   Server virtualization

b.   Server optimization

c.   Server proliferation

d.   Server platforming

e.   Server redundancy

A

1.     A ___ has a set of high-speed storage devices and servers that are networked together using a very high-speed network.

 

a.   wide area network

b.   local area network

c.   storage area network

d.   storage server

e.   local area storage WAN

C

1.      The _____ contains the servers that are designed to serve data to customers and suppliers.

 

a.   e-commerce edge

b.   SAN

c.   LAN

d.   domain controller

e.   bottleneck

A

1.     _______ are wired into a Wi-Fi Controller. They report what devices are attached to them and how busy they are to the controller, which balances traffic across the APs it manages.

 

a.   Managed APs

b.   Managed routers

c.   SAN

d.   Managed Wi-Fi hub

e.   Wireless router

A

1.     ______ provides Ethernet over the existing electrical power wires in your house at rates up to 1 Gbps.

 

a.   Managed APs

b.   SAN

c.   Powerline networking

d.   Wireless LANs

e.   Powertrain LANs

A

1.     Standard voice-grade twisted-pair wires.

 

a.   Category 1 cable

b.   Category 2 cable

c.   Category 5e cable

d.   Category 6 cable

e.   Category 7 cable

A

1.     Old standard that is no longer in use today.

 

a.   Category 1 cable

b.   Category 2 cable

c.   Category 5e cable

d.   Category 6 cable

e.   Category 7 cable

B

1.     An improved version that has better insulation and a center plastic pipe inside the cable to keep the individual wires in place and reduce noise from cross talk.

 

a.   Category 1 cable

b.   Category 2 cable

c.   Category 5e cable

d.   Category 6 cable

e.   Category 7 cable

C

1.     Has a maximum range of 55 meters.

 

a.   Category 1 cable

b.   Category 2 cable

c.   Category 5e cable

d.   Category 6 cable

e.   Category 7 cable

D

1.     Has a maximum range of 15 meters.

 

a.   Category 1 cable

b.   Category 2 cable

c.   Category 5e cable

d.   Category 6 cable

e.   Category 7 cable

E

1.     Typically used between networking devices that are near each other (e.g., in a rack or data center).

 

a.   Category 1 cable

b.   Category 2 cable

c.   Category 5e cable

d.   Category 6 cable

e.   Category 7 cable

E

1.     Which of the following is not true about backbone networks?

 

a.   They may also be called enterprise networks if they connect all networks within an organization.

b.   They typically connect many networks, including LANs.

c.   They typically provide connections to other BNs, WANs, MANs, and the Internet.

d.   They may also be called campus networks if they connect many BNs spanning several buildings as a single location.

e.   They tend to use lower speed circuits than LANs.

E

1.     Which of the following is not a type of hardware device that can be used to interconnect networks?

 

a.   layer 3 switches

b.   routers

c.   dumb terminals

d.   layer 2 switches

e.   all of the above can be used

C

1.     Switches:

 

a.   learn addresses by reading the source and destination addresses.

b.   operate at the physical layer only.

c.   connect two or more network segments that use different data link protocols.

d.   connect two or more network segments that use different network protocols.

e.   have become less popular than hubs.

A

1.     Routers:

a.   operate at the application layer.

b.   operate only at the physical layer.

c.   cannot connect two or more networks that use the same type of cable.

d.   may also be called TCP/IP gateways.

e.   operate only at the data link layer.

D

 

1.     Which of the following is not a way that a router differs from a switch?

 

a.   Routers can connect two or more networks that use the same data link protocol.

b.   Routers only process messages that are specifically addressed to it.

c.   Routers operate at the network layer.

d.   Routers perform more processing on each message than switches do.

e.   Routers can choose the “best” route between networks for forwarding a packet.

A

1.     Which of the following is not true about Layer-3 switches?

 

a.   They switch messages based on their IP address.

b.   They can be used in place of routers.

c.   They function faster than routers.

d.   They have more simultaneously active ports than routers.

e.   They can only switch messages based on their data link layer addresses.

E

1.     Which of the following is a fundamental backbone network architecture?

a.   Bridged backbone

b.   Virtual LAN

c.   Hubbed backbone

d.   Gatewayed backbone

e.   Virtual backbone

B

1.     Which of the following is not a technology layer that is considered when designing backbone networks?

 

a.   access layer

b.   distribution layer

c.   decentralized layer

d.   core layer

e.   none of the options

C

1.     A subnetted or hierarchical backbone can also be called:

 

a.   Bridged backbone

b.   Virtual LAN

c.   Hubbed backbone

d.   Collapsed backbone

e.   Routed backbone

E

1.     _________ move packets along the backbone based on their network layer address.

 

a.   Bridged backbones

b.   Hubbed backbones

c.   Multistation access unit backbones

d.   Routed backbones

e.   NIC backbones

 

D

1.     Routers:

 

a.   connect different IP networks or subnetworks

b.   typically do not require any configuration by the network administrator

c.   use data link layer addresses to move packets that leave the subnet

d.   typically require only one TCP/IP address

e.   do less processing on packets than a layer 2 switch does

 

A

1.     Two primary disadvantages to the ______ BN type are that the routers in the network impose time delays, and routers are typically more expensive and require more management than switches.

 

a.   bridged backbone

b.   virtual LAN

c.   hubbed backbone

d.   collapsed backbone

e.   routed backbone

E

1.     A __________ type of BN has a star topology with a switch at its center resulting in all devices on the BN segment being part of the same IP network.

 

a.   Bridged backbone

b.   Virtual LAN

c.   Hubbed backbone

d.   Switched backbone

e.   Routed backbone

D

1.     Switched backbone networks:

 

a.   always use a ring topology

b.   are the least common type of BN used in one building

c.   use a star topology with one device, usually a switch

d.   switch the traffic based on layer 3 addresses

e.   require much more management that do routed backbone networks

 

C

1.     Which of the following is not true about switched backbones?

 

a.   Network latency (delay) is decreased in comparison to traditional (bridged or routed) backbone networks.

b.   Each connection into the switch is a separate point-to-point circuit, which supports simultaneous access by the LANs connected to the switch.

c.   There are many more networking devices in a switched backbone network compared to the number of LAN.s attaching to it.

d.   The use a star topology

e.   The backbone essentially exists in the switch; there is no backbone cable.

C

1.     Which of the following is true regarding switched backbones?

 

a.   They place all network devices for one part of the building physically in the same room, often in a rack of equipment.

b.   They have an advantage of requiring less cable.

c.   They make it more difficult to move computers from one LAN to another.

d.   Network capacity is always tied to the physical location of the computers.

e.   They are harder to maintain and upgrade than a BN that is not rack-based.

 

A

1.     Associated with a switched backbone, MDF is an acronym for:

 

a.   multi-station device foundation.

b.   main distribution facility.

c.   manual data frequency.

d.   multiplexer downstream flow.

e.   maximum data facility.

B

1.     A _____________ type of BN is a new type of LAN/BN architecture made possible by intelligent, high-speed switches that assign computers to LAN segments via software, rather than by hardware.

 

a.   Bridged backbone

b.   Virtual LAN

c.   Hubbed backbone

d.   Collapsed backbone

e.   Routed backbone

B

1.     Which of the following is not true about multi-switch VLANs?

 

a.   Several switches are used to build a VLAN.

b.   The switches in the VLAN can send packets among themselves in a way that identifies the VLAN to which the frame belongs.

c.   In some multi-switch VLANs, the Ethernet frame is modified based on the emerging IEEE 802.1q standard.

d.   In some multi-switch VLANs, a new VLAN packet encapsulates the Ethernet packet.

e.   VLAN configurations are limited to spanning over no more than two switches.

E

1.     Which of the following would be least effective in improving backbone performance?

 

a.   upgrading memory for devices in the network

b.   changing the demand placed on the network

c.   adding new keyboards to the client computers

d.   upgrading the circuits between devices

e.   improving devices in the network

C

1.     Circuit capacity on a backbone network will not be improved by:

 

a.   going from 100Base-T Ethernet to 10Base-T Ethernet.

b.   going from 100Base-T Ethernet to gigabit Ethernet.

c.   adding additional circuits alongside heavily used ones.

d.   replacing a shared circuit backbone with a switched circuit backbone.

e.   providing a faster circuit to the server.

 

A

1.     Device performance on a backbone network will not be improved by:

 

a.   using the same protocols in the backbone and the LANs.

b.   using static routing in low to moderate traffic conditions.

c.   ensuring that backbone devices have sufficient memory so that packets do not have to be retransmitted by the sender.

d.   translating packets from one protocol to another as they enter the BN.

e.   none of the options.

D

1.     Network demand will not be reduced by:

 

a.   restricting (or moving) applications such as desktop videoconferencing.

b.   using network devices to ensure that broadcast messages do not go to other networks.

c.   encouraging the use of applications such as medical imaging.

d.   sending status information to all computers on all LANs in the backbone network.

e.   restricting (or moving) applications such as multimedia.

 

C

1.     Which of the following would not be part of an “ideal” backbone design?

 

a.   Access layer composed of 10/100 layer 2 Ethernet switches

b.   Distribution layer composed of layer 3 Ethernet switches of 100 (or 1000) Base-T

c.   Redundant switches

d.   Core layer composed of layer 3 Ethernet switches running 10 (or 40) GbE over fiber

e.   Coax cabling throughout LANs and BN

E

1.     The backbone architecture layer that is closest to the users is the

 

a.   Access layer

b.   Distribution layer

c.   Core layer

d.   Privacy layer

e.   Switched layer

A

1.     The _______ is the part of the backbone that connects the LANs together.

 

a.   Access layer

b.   Distribution layer

c.   Core layer

d.   Privacy layer

e.   Switched layer

 

B

1.     The _________ is the part of the backbone that connects the different backbones together.

 

a.   Access layer

b.   Distribution layer

c.   Core layer

d.   Privacy layer

e.   Switched layer

C

1.     With a switched backbone network, the equipment is usually placed in a ______.

 

a.   server

b.   NIC

c.   cabinet

d.   basement

e.   rack

E

1.     Devices in a rack are connected together using ___________.

 

a.   patch cables

b.   string

c.   servers

d.   modules

e.   chassis switches

A

1.     Using ______ capabilities, network managers can connect VOIP phones directly into a VLAN switch and configure the switch to reserve sufficient network capacity so that they will always be able to send and receive voice messages.

 

a.   backbone

b.   switched

c.   routed

d.   QoS

e.   access

D

1.     Computers can be assigned to a VLAN based on the ________.

 

a.   IEEE 802.1q standard

b.   NIC interface

c.   physical port on the switch

d.   IEEE 802.3 standard

e.   physical location of the computer

 

C

1.     The biggest drawbacks to VLANs are their_________________.

 

a.   cost and management complexity

b.   size and contention

c.   contention and cost

d.   learning curve and contention

e.   speed and size

A