Which of the following is most typical of a broadband network? - correct answerMultiple analog channels
What components are common to all computer
... [Show More] systems? (Check all that apply.) - correct answerProcessor
Memory
Storage
I/O
What does I/O stand for? - correct answerInput / Output
A NIC is a device used for: - correct answerSignaling
A sound card is what general type of computer component? - correct answerInput/output
Which of the following is managed by the OS? - correct answerKeyboard input
Screen display
File I/O
Peripheral control
The primary purpose of a device driver is to control hardware under the supervision of the OS. True or False? - correct answerTrue
Which of the following network topologies forms a closed loop? - correct answerRing topology
Which of the following network topologies connects devices to a shared straight-line cable? - correct answerBus topology
M1L5 When is UTP cable preferred over STP? - correct answerWhen there is little electrical interference
Which connector type is used with Thinnet coaxial cable? - correct answerBNC
Which of the following cable types uses a T-connector to connect each NIC to the cable? - correct answerThinnet
Which of the following cable types can transmit data farthest? - correct answerFiber optic
How are bits represented on fiber optic cable? - correct answerPulses (on/off) of light
Which of the following are the two primary types of light sources in fiber optic cables? - correct answerLaser diode and LED
What is the main advantage of star topology? - correct answerEase of management
Which of the following would not be used in a typical star topology? - correct answerThinnet
How many wire pairs can be terminated on a 66 block? - correct answer25 or 50
What makes a crossover cable different from a patch cord? - correct answerA crossover cable uses the 568A pattern on one jack, and the 568B pattern on the other. A patch cord uses the same pinout pattern on both jacks.
What is the key reason that smart LAN administrators demand well-made cable connections? - correct answerBad cable connections degrade a network's performance.
What is the main advantage of using balanced signaling on a serial cable? - correct answerThe cable can be longer because balanced signaling is less vulnerable to interference.
What term describes the number of wave crests that pass a fixed point during a particular period of time? - correct answerFrequency
In data networking, this term is defined as "Signals may flow in either direction, but not simultaneously". - correct answerHalf-duplex
Two CPUs have the same size data bus. Which one will process data faster? - correct answerThe one with a higher clock speed
This unique ID number is coordinated by the Institute of Electrical and Electronics Engineers and is used by only one network interface card anywhere in the world. - correct answerMedia access control address (MAC)
Which is a network management and utility software that is typically used by network administrators and information systems personnel when the network is unused or lightly used, often in the middle of the night? - correct answerBackup and recovery utilities
Which of the following is also called "Thicknet" or "yellow wire" and includes two layers of foil shielding as well as an additional copper mesh shield? - correct answer10Base5 cable
According to 10BaseT wiring rules, what is the maximum segment length without a repeater? - correct answer100m
When light travels through a fiber-optic cable, the change in refractive index causes the light to refract off which of the following? - correct answerThe boundary between the core and the cladding
Which of the following requires a laser transmitter? - correct answerSingle-mode fiber
In what part of a building would you typically find punch-down blocks? - correct answerWiring closet
Which OSI model layers are concerned primarily with applications? - correct answerThe top three
Which layers are primarily concerned with moving raw data? - correct answerThe lower four
Which of the following is the primary purpose of a Physical Layer protocol? - correct answerTransmit bits across a physical link
Which of the following will not occur at the Physical Layer? - correct answerRerouting of information
Which of the following is the primary purpose of a Data Link Layer protocol? - correct answerTransmit frames across a physical link
Which of the following hardware devices builds a frame? - correct answerNIC
Frame headers and packet headers contain addresses. True or False? - correct answerTrue
Which of the following is an example of a Network Layer protocol? - correct answerIP
The Network Layer is to packets as the Data Link Layer is to: - correct answerFrames
Which of the following is the primary purpose of a Transport Layer protocol? - correct answerTransmit messages from process to process
The Transport Layer is not concerned with which of the following? - correct answerNone of the above
Which layer uses port numbers for communication? - correct answerTransport Layer
The Session Layer is concerned with which of the following? - correct answerManaging dialog
Beginning dialog
Ending dialog
The OSI model Presentation Layer does which of the following? - correct answerManages the way computers read information
Encrypts and decrypts information
Is concerned with the order of bytes and integers
Which activities occur at the Application Layer? - correct answerFile transfer and access
email
Web browser
Encapsulation and protocol headers, decapsulation, and reassembly are three of the four basic techniques used whenever different layers of protocols work together. What is the fourth? - correct answerSegmentation
Which type of address is unique anywhere in the world? - correct answerNIC address
Which layer of the OSI protocol stack handles frames? - correct answerData Link
Which of the following best represents a logical address? - correct answerIPv6
In data networking, ________ describes the characteristics of a transmission link, such as throughput, setup time, or accuracy. - correct answerQuality of service (QoS)
Transport layer processes work with transmission channels using multiplexing and ___________ techniques. - correct answerParallelization
Which of the following protocols is commonly used in the Session Layer? - correct answerAdvanced Program-to-Program Communications (APPC)
What is the binary equivalent to the decimal number "14"? - correct answer0000 1110
Data security, data compression, and ________ are the three main services that the Presentation Layer provides. - correct answerData representation
Which of the following is an example of a Transport Layer protocol? - correct answerTransmission Control Protocol (TCP)
Ethernet operates at all speeds except which of the following? - correct answer16 Kbps
Which of the following is the most popular LAN Data Link Layer technology? - correct answerEthernet
An Ethernet LAN that uses UTP cabling and a hub as the physical medium is referred to as which of the following? - correct answerStar
The CD in CSMA/CD refers to the ability of an Ethernet node to do which of the following? - correct answerDetect frame collisions
The CS in CSMA/CD refers to the ability of an Ethernet node to do which of the following? - correct answerSense an electrical signal
Collisions are normal on CSMA/CD LANs and not usually the result of errors. True or False? - correct answerTrue
Which of the following is another name for a CO? - correct answerLocal exchange
Which of the following is the primary difference between a public and private network? - correct answerWho owns and maintains the network
Which of the following WAN services usually provides the highest bandwidth? - correct answerSONET
Which of the following is the unit of data transferred by an ATM network? - correct answerCell
Why is ATM better for multimedia? - correct answerAll cells are the same size.
Cells are small.
ATM runs over fast fiber optics.
WANs are shifting away from switched services and increasingly using dedicated network services. True or False? - correct answerFalse
A frame relay network uses fewer lines to connect 10 locations than a T1 mesh, and is therefore more cost effective. True or False? - correct answerTrue
ATM requires fiber media to run. True or False? - correct answerFalse
Carrier sense multiple access with collision detection (CSMA/CD) is most like which of the following? - correct answerAn informal conversation in which each person speaks when the opportunity presents itself, but only one person speaks at any time
The IEEE 802.3 standard defines which of the following? - correct answerEthernet
What Fast Ethernet standard can send Ethernet frames at 100 Mbps over Category 5E UTP or fiber optic cabling? - correct answerIEEE 802.3u
What enables the transport of computer data over analog telephone local loops? - correct answerTelephone modems.
Which of the following describes the bandwidth of a single FT1? - correct answer64 Kbps
How much bandwidth in a T1 circuit is allocated for control information? - correct answer8 Kbps.
What device is required to attach a non-ISDN device to an ISDN network? - correct answerTerminal adaptor (TA)
Which of the following is a connection-oriented packet-switched network service that works at the Data Link Layer? - correct answerFrame relay
What is a private, internal network that uses Internet applications, tools, and protocols? - [Show Less]