题目内容
（请给出正确答案）
● A （74） is a device that enables the computer to handle sounds.
（74）
A. network card
B. video card
C. sound card
D. monitor
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A (74) is a device that enables the computer to handle sounds．
A．network card
B．video card
C．sound card
D．monitor
A．data
B．controls
C．signals
D．registers
试题（71）～（75）
A Bluetooth device can be either a master or a slave and any of the devices within a （71）can be the master. There is only one master and there can be up to （72） active slave devices at a time within a single network. In addition, a device may be a standby slave or a parked slave. There can be up to （73） parked slaves. If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to （74） mode before it can become active. Within a network, all （75） communications are prohibited.
（71）
A. Wireless LAN
B. Wireless MAN
C. Cellular radio network
D. Piconet
（72）
A. 7
B. 15
C. 63
D. 255
（73）
A. 127
B. 255
C. 511
D. 1023
（74）
A. master
B. standby slave
C. parked slave
D. active slave
（75）
A. master-to-master
B. master-to-slave
C. slave-to-slave
D. slave-to-master
WAP uses (71) , which includes the Handheld Device Markup Language (HDML) developed by Phone.com. WML can also trace its roots to eXtensible Markup Language (XML). A markup language is a way of adding information to your (72) that tells the device receiving the content what to do with it. The best known markup language is Hypertext Markup Language. (73) HTML, WML is considered a meta. language. Basically, this means that in addition to providing predefined (74) , WML lets you design your own markup language (75) . WAP also allows the use of standard Internet protocols such as UDP, IP and XML.
A．HTML
B．XML
C．DML
D．WML
● (71) is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed-length bit string．
(72) is a protocol that most USENET machines now use it to allow news articles to propagate from one machine to another over a reliable connection．
(73) is an approach preferred by cable TV providers ．In this solution the fiber terminates at an optoelectrical converter and the final segment is a shared coaxial cable．
(74) is a device used to connect two separate network that use different communication protocol．
(75) is a digital-to-digital polar encoding method in which the signal level is always either positive or negative．
(71) A． MD
B．RSA
C．DES
D．MIB
(72)A．RTP
B．RTTPC FTP
D．NNTP
(73) A． ADSL
B．FTTC
C．HFC
D．FTTH
(74)A ．Router
B．Gateway
C．Bridge
D．hub
(75)A ．NNI
B．NRZ
C．NAK
D．NVT
●Flow control is a function that prevents network congestion by ensuring that (71) do not overwhelm (72) with datA．There are three commonly used methods for handling network congestion ． (73) is used by network devices to temporarily store bursts of excess data in memory until they can be processed． (74) are used by receiving devices to help prevent their buffers from overflowing ． (75) is a flow-control scheme in which the source device requires an acknowledgment from the destination after a certain number of packets have been transmitted．
(71)~(72)A．transmitting devices
B．transmitted devices
C．receiving devices
D．received devices
(73)~(75) A．Buffer
B．Source-quench messages
C．Buffering
D．Windowing
(71) is a channel's capacity which directly reflects the data transfer rate of the channel.
(72) is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.
(73) is a six bytes OSI layer 2 address which is burned into every networking device that provides its unique identity for point to point communication.
(74) is a transfer mode in which all types of information are organized into fixed form. cells on an asynchronous or non-periodic basis over a range of media.
Ethernet is the popular LAN developed under the direction of the (75).
A．The delay
B．The volume
C．The noise
D．The bandwidth
● Every valid character in a computer that uses even （71） must always have an even number of1bits.
（71）A. parity B. check C. test D. compare
● The maximum number of data that can be expressed by 8 bits is （72） .
（72）A. 64 B. 128 C. 255 D. 256
● Integration （73） is the process of verifying that the components of a system work together as described in the program design and system design specifications.
（73）A. trying B. checking C. testing D. coding
● GIF files are limited to a maximum of 8 bits/pixel, it simply means that no more than 256 colors are allowed in （74） .
（74）A. an image B. a file C. a window D. a page
● Computer （75） is a complex consisting of two or more connected computing units, it is used for the purpose of data communication and resource sharing.
（75）A. storage B. device C. network D. processor
When we announced Java 2 Micro Edition(J2ME)a few years ago, we believed that Java had an important role to play in hand held devices. Some were(71)that Java would be small enough for such limited devices.
But no(72), Java for the small device is a success. J2ME has emerged strongly in the wireless market. Java's portability and extensibility have brought about rapid(73)in this market.
The success of Java beyond desktop computers is significant(74)developers. Java literacy is now more important than ever, as Java is used more and more to(75)a whole range of new computing devices--not only wireless handsets but also personal digital assistants, cameras, automobiles, home control, and so on.
A．skeptical
B．think
C．believe
D．approve
