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54 Cards in this Set
- Front
- Back
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The number of binary bits transmitted per second is measured in bps. For example, common modem speeds are 28,800 bps and 56,000 bps. Another way of writing 28,800 bps is 2838 Kbps, because kilo means 1,000 |
bits per second (bps) |
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An external _____ connects a computer to its peripheral devices. An I/O _____ connects the central processor of a PC with the video controller, disk controller, hard drives, memory, and other I/O devices. |
bus |
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One _____ is equal to eight bits |
byte |
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How are networks classified? |
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A _____ is a portion of a LAN in which all nodes are directly connected. |
Segment |
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What is a primary difference between a MAN (Metropolitan Access Network) and a campus network? |
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What type of topology is normally used by a WAN? |
Ring |
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What is the difference between a program and a process? |
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Which term describes sets of communication rules that give meaning to the signals exchanged by two nodes? |
Protocol |
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Which of these most closely defines a server? |
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Which of these is not another name for a physical address? |
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At what layer of the OSI model do you find logical addresses? |
Layer 3, Network Layer |
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What do you cooperating layers of protocols? |
Protocol stack, and protocol suite |
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When there is a change to any given layer of the OSI model, how are the other layers affected? |
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Which of these is not a technique for layers of protocols working together? |
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Which layer addresses data to a particular process running on a destination computer? |
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Twisted pair cable commonly ends where in a wiring closet? |
A punchdown block, server, or system backbone |
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A desktop's bus architecture determines how quickly data is exchanged between what? |
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Which is the minimum recommended UTP cable category for new installations? |
Cat 5 or Cat 5e |
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Signaling on optical fiber is accomplished by sending a signal encoded beam of light through a glass or plastic fiber called_____. |
Single mode fiber |
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Why do some fiber optic cables contain kevlar? |
To permit pulling the cable without stressing the optical fibers |
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Laser light is predominantly used in which of these? |
Both single and multimode fibers |
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Which of these does affect the range of optical fibers? |
single or multimode fiber use |
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802.11 defines what basic pieces of equipment? |
Wireless station and access point |
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What organization developed the National Electrical Code (NEC)? |
National Fire Protection Association (NFPA) |
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Which cable type is rarely installed anymore? |
Coaxial |
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Which of these is not a quality cable installation consideration? |
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How many wire pairs are in a UTP cable? |
4 |
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What type of UTP cable is used to connect two NICs directly to each other? |
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What type of device is used with UTP cabling to create a star network configuration? |
hub |
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NIC |
Network Interface Card |
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Why would you use a switch to replace a hub in a LAN? |
To increase Internet connectivity |
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Which of the following is NOT a MAC layer protocol? |
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What does MAU stand for? |
Multistation Access Unit, aka Media Access Unit |
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Which of the following best describes the function of a MAC layer address? |
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What is the most widely installed LAN technology? |
Ethernet |
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Which of the following describes a WAN? |
It spans multiple cities and possible multiple countries |
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What type of network topology uses a MAU? |
Ring |
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The most common topology being implemented in LANs today is star topology. |
True |
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Which of the following is not a MAC layer protocol? |
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A bicycle shop sells replacement parts for many popular models, taking orders from a printed catalog through the mail and over the telephone. They want you to design an online order processing Web site, including choosing and configuring the network and servers on which the site and database will run. They anticipate thousands of orders per hour placed by customers worldwide. On which communication model should you base the design? |
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When an application is sending data to a distant computer, what proces occurs on the sending node? |
Encapsulation |
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What is the OSI model? |
A layered stack of network communication protocols and services |
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What is the main advantage of a layered communication architecture? |
It increases system flexibility, and simplifies software development and maintenance |
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Which network unit of information has the following characteristics? |
Frame |
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Out of the following Physical Layer media: Coaxial Optical fiber Wireless
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Multimode cabling is capable of carring information over longer distances than single mode cabling |
False |
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Which cabling standard describes how cable is run through pathways between commercial buildings? |
TIA/EIA 568 |
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Plenum cable is required in airspaces because: |
It does not produce toxic fumes when burned |
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A network admin wants to upgrade from 10 Mbps Ethernet to Fast Ethernet. Half the computers use 10 Mbps NICs, and half use 10/100 Mbps NICs. The network is wired with Cat 5 UTP. Which one of the following upgrades best meets this requirement? |
Replace the hub and NICs with 100 Mbps or 10/100 Mbps devices |
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What is the difference between the Ethernet version 2 frame format and IEEE 802.3 frame format? |
Length field in the frame |
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What does the source address field of an Ethernet frame contain? |
The MAC address of the sending computer |
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Which standard describes Fast Ethernet over fiber optic cabling? |
100BaseFx |
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Your network engineer has asked you to replace a 24-port. 100 Mbps Ethernet workgroup hub with a 10/100 Mpbs Ethernet switch. What benefit can you expect to gain from this change? |
Increased bandwidth for each connected device |
