Shared Flashcard Set

Details

2E251 Vol 2 UREs
AF CDCs
100
Other
9th Grade
09/14/2009

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Cards

Term
What happens when more bits are added to a digital signal and are arranged in a sequence that is understood by the sender and receiver?
Definition
a code set is established
Term
What term is sometimes used to identify a byte in networking?
Definition
an octet
Term
The DoD Joint Technical Architecture (JTA) is by the Air Force covers?
Definition
technology related equipment and standardization
Term
The result of DoD standaradizing all technical equipment is that they operate more efficiently and effectively?
Definition
during military operations
Term
What organization's series of wiring standards for residential and commerical network cabling are important for computer networking?
Definition
Electronic Industries Alliance (EIA)
Term
What EIA/Telecommunications Industry Association (TIA) standard is used for commercial building telecommunications cabling?
Definition
568A
Term
Which of the following is an International Telecommunications Union (ITU) standardized format used for digital telecommunications services backbone system?
Definition
E1
Term
There is a worldwide, non-profit association of technical professionals that promotes the development of standards called the ?
Definition
Institute of Electrical and Electronics Engineers (IEEE)
Term
A collection of standards for LAN architectures, protcols, and technologies called project 802 were developed by the ?
Definition
IEEE
Term
The organization headquartered in Geneva, Switzerland that is the parent organization for all other telecommunications organizations is the ?
Definition
International Telecommunications Union
Term
The organization responsible for the X-series and V-series standards is the?
Definition
ITU-T
Term
Which series of standards are recommendations for data transmission using the telephone network?
Definition
V
Term
The definition of the OSI reference model was a major contribution to networking made by the ?
Definition
International Organization for Standardization (ISO)
Term
What electrical interface standard has the ability to work in either balanced or unbalanced electrical circuits?
Definition
EIA RS-530
Term
What two categories are the OSI reference model divided into?
Definition
application and data transport layers
Term
What two sublayers did the IEEE divide the OSI data link layers into?
Definition
logical link control (LLC) and media access control (MAC)
Term
At what OSI layer are virtal circuits established, maintained, and terminated?
Definition
transport
Term
At what OSI layer are common data compression and encryption schemes used?
Definition
presentation
Term
What OSI layer is closest to the end user?
Definition
application
Term
What information unit, whose source and destination are network-layer entities, uses connectionless network services?
Definition
datagram
Term
What topology defines the layout of a network's devices and media?
Definition
physical
Term
What topology defines the way in which devices communicate and data is transmitted throughout the network?
Definition
logical
Term
What topology consists of cable segments from each computer connected to a centralized component?
Definition
star
Term
What topology combines two or more different physical topologies in a single network?
Definition
hybrid
Term
What is the most widely implemented logical topology?
Definition
bus
Term
What protocol system uses data frames to start and stop bits for synchronization, and has special bits used for error detection?
Definition
asynchronous protocol
Term
What data communication protocol uses character control or handshaking to link and represent information?
Definition
binary synchronous protocol (BSC)
Term
What TCP/IP network layer protocol provides information about how and where data should be delivered, including the data's source and destination addresses?
Definition
Internet Protocol (IP)
Term
What TCP/IP network layer protocol provides the IP address for a device that knows its own MAC address?
Definition
Reverse address resolution protocol (RARP)
Term
What TCP/IP network layer protocol provides messaging that can help with troubleshooting?
Definition
Internet control message protocol (ICMP)
Term
What TCP/IP network layer protocol does not guarantee that packets will be received at all?
Definition
User Data Protocol (UDP)
Term
What application within TCP/IP is used to send and receive files via the UDP and is very simple?
Definition
Trivial File Transfer Protocol (TFTP)
Term
What TCP/IP network layer protocol is a utility that can verify that TCP/IP is installed and communicating with the network?
Definition
Packet Internet Groper (PING)
Term
What kind of network interconnects users with computer resources in a geographic area or region like a city?
Definition
Metropolitan area network (MAN)
Term
What type of network connects networks that are typically separated by geographical distances between cities, states, countries, or around the world?
Definition
Wide area network (WAN)
Term
What option(s) do you have when configuring a client to join a Microsoft network?
Definition
workgroups and domains
Term
Instead of using binary, how are IPv4 addresses expressed to be more user friendly?
Definition
dotted decimal notation (DDN)
Term
How many and what are the classes of IPv4 addresses?
Definition
Five (A-E)
Term
Which of the following is a class B address?
Definition
169.16.0.125
Term
What IPv4 class address is used for multicasting?
Definition
D
Term
What is the default classful subnet mask on class B networks?
Definition
255.255.0.0.
Term
What method borrows bits from the host field of an IP address to create a subnet?
Definition
classless inter-domain routing
Term
Instead of using bunary, how are IPv6 addresses expressed to be more user friendly?
Definition
colon hexadecimal format
Term
What notation is expressed in leading zero compression for IPv6?
Definition
FEDC:BE97:0:0:4567:0:9876:1234.
Term
What notation is expressed in zero compression for IPv6?
Definition
10AB::3:0:1234:5678.
Term
What unicast address scope is designed to be private, internally routable addresses that do not route outside the site?
Definition
site-local
Term
What rule is observed when calculating the number of addressable subnets or hosts?
Definition
minus 2 rule
Term
What kind of classful IPv4 address do you have when you have all zeros in the host field?
Definition
network address
Term
What kind of classless IPv4 address do you have when you have all zeros in the host field?
Definition
subnet address
Term
What does variable length subnet masking utilize?
Definition
classless inter-domain routing
Term
When using variable length subnet masking (VLSM), if the next subsequent subnet identification on the VLSM chart cannot start at binary 1 in the subnet field, then you would start at the ?
Definition
first available subnet address
Term
What are the time periods that memory devices must be able to supply data measured in?
Definition
nanoseconds
Term
Randon Access Memory (RAM) chips are classified as?
Definition
volatile
Term
A characteristic of read-only memory (ROM), compared to RAM, is that ROM is?
Definition
much slower
Term
What year did the small computer system interface (SCSI) standard originate?
Definition
1986
Term
A personal computer transmits or sends data to a printer or other device by using a ?
Definition
parallel port
Term
How many peripherals can a universal serial bus (USB) handle at once?
Definition
127
Term
How many devices can connect to a FireWire bus?
Definition
63
Term
Hard disk drives are rigid platters that spin at a ?
Definition
high rate of speed with magnetic coating
Term
What loads the operating system into memory and allows it to beging operation?
Definition
bootstrap loader
Term
The path between the OS and virtually all hardware not on the computer's motherboard goes through a special program called?
Definition
driver
Term
What OS's task lets programmers use functions of the computer without having to directly keep track of all the details in a CPUs operation?
Definition
application interface
Term
The core operating-system function is the management of the computer system which resides with the?
Definition
kernel
Term
Which Windows OS is based on Windows NT?
Definition
2000
Term
What directory is always identified by the slash symbol and is in the "a" partition?
Definition
root
Term
Three types of pathnames are?
Definition
absolute, relative, and simple
Term
A device used to input and display data is a ?
Definition
terminal
Term
The terminal equipment that has a limited computing and processing capability that executes small applications without outside support is a ?
Definition
client
Term
What layer of the OSI model to transceivers operate at?
Definition
physical
Term
What functions does the network interface card provide to communicate onto the network media?
Definition
physical, electrical, and logical
Term
Which of the following is not an address format managed by the IEEE?
Definition
Media access control (MAC)-24
Term
What device receives a digital signal and regenerates the signal along the next leg of the medium?
Definition
repeater
Term
What type of hub is a simple signal splitter and not a repeater?
Definition
passive
Term
Typically, repeater spacing is every?
Definition
40 kilometers
Term
What type of bridge is used to convert one data link layer protocol to another?
Definition
translational
Term
What is the forwarding method used when the entire frame is received and placed into the buffer, but an error check is performed, and the frame is sent to the proper port for delivery?
Definition
store-and-forward
Term
Whta layer of the OSI model do routers operate?
Definition
3
Term
What do routing algorithms initialize and maintain to aid in the process of path determination?
Definition
routing tables
Term
Which routing protocol is also used on interior or border routers and can coexist with the Routing Information Protocol (RIP) on a network?
Definition
Open Shortest Path First (OSPF)
Term
What is the routing protocol of internet backbones and is used on border and exterior routers?
Definition
Border Gateway Protocol (BGP)
Term
An Intel-based PC can both communicate and share resources with a Macintosh computer or mainframe using the translation services of a ?
Definition
gateway
Term
What protocol is used to route e-mails across the internet?
Definition
simple mail transfer protocol
Term
The STU-III is a user friendly:
Definition
low-cost, secure telephone device
Term
What encryption device is capable of loading up to 500 keys?
Definition
AN/CYZ-10/DTD
Term
Tha classification of a fill device is?
Definition
classified as soon as a key is loaded, and holds the classification of the loaded key
Term
Which of the following is not a function of the CSU?
Definition
manages timing errors and signal regeneration
Term
The determining factor in calculating the correct size of a waveguide is?
Definition
frequency
Term
Which SATCOM system is used to transmit space operations?
Definition
defense satellite communcations system (DSCS)
Term
HF ground waves can be transmitted up to ?
Definition
400 miles
Term
The frequency bandwidth of a HF signal is between 3MHz and ?
Definition
30MHz
Term
Which is an advantage of laser light transmissions?
Definition
no FCC license is required
Term
Shielded cables are often used in the systems control facility between the main distribution frame and the patch bays to reduce?
Definition
interference and crosstalk
Term
An optical communications system is comprised of a transmitter?
Definition
cable and receiver
Term
Why are fiber optic cables immue to EMI?
Definition
fibers are made of dielectric material
Term
Which statement best describes a fiber optic cables' critical angle?
Definition
The smallest angle of incidence between two media where total reflection takes place.
Term
What term refers to fiber optic cable's core with the same refractive index throughout the cable?
Definition
step index
Term
What noise is a mixture of all frequencies and can completely mask the intelligence frequencies?
Definition
white noise
Term
What are the two principle weighting characteristics in use with telecommunication circuit noise?
Definition
CCITT psophometric weighting and C-message weighting
Term
The two major types of fram structures are?
Definition
CCITT and low speed
Term
What term is associated with the delay or lag introduced in the application of voltage from one section to the next?
Definition
latency
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