根据下面的文字资料回答 72~76 题 ( 1 )is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed-length bit string.
( 2 )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.
( 3 )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.
( 4 )is a device used to connect two separate network that use different communication protocol.
( 5 )is a digital-to-digital polar encoding method in which the signal level is always either positive or negative.
第6题:文中( 1 )处正确的答案是( )。
A.MD
B.RSA
C.DES
D.MIB
第1题:
请根据以下内容回答 72~76 题
A.非处方药
B.处方药
C.两者均是
D.两者均不是
第 72 题 营养保健品是( )
第2题:
根据下面的文字资料回答 63~67 题
In low-speed network,it is usually adequate to wait for congestion to occur and
then react to it by telling the source of packets to slow down.In high-speed
networks,this approach oftenworks poorly,because in the( 1 )between sending the
notification and notification arriving at the source,thousands of
additional( 2 )may aITive.In ATM network,a major tool for
preventing( 3 )is( 4 )control.when a host wants a new virtual( 5 ),it must
describe the traffic to be offered and the service expected.
第63题:文中( 1 )处正确的答案是( )。
A.interval
B.time
C.slot
D.delay
【正确答案】:A
【参考解析】:
在低速网络中,通常采用碰到拥塞时,通过向源端反映其降低发送速率。而在告诉网络中,这种方式将会恶化,因为在发送通告和通告到达之间会有成千上万的其它数据包到达。在ATM网络中,主要采用允许控制来避免拥塞,当有一台主机要建立一条新的虚连接时,它必须描述它所需的流量和服务等级。
第3题:
根据以下材料回答第 76~79 题
已知某企业工人H产量统计资料,如表3—4所示。
第 76 题 上述变量数列属于( )。
第4题:
根据下列选项,回答 72~76 题:
A.盐炙品
B.蜜炙品
C.炭制品
D.烫制品
E.麸炒品处方中
第 72 题 枳壳应付( )。
第5题:
根据下面的文字资料回答 68~72 题For each blank.choose the best answerfrom the four choices and write down on the answer sheet.
( 1 )is a protocol that a host uses toinform. a router when it joins or leaves an Internet muhicast group.
( 2 ) is an error detection code that most data communication networks use.
( 3 )is an interior gateway protocol that uses a distance vector algorithm topropagate routing information.
( 4 )is a transfer mode in which all types of information ate organized intofixed form. cells onan asynchronous or non-periodic basis over a range of media.
( 5 )is an identifier of a web page.
第68题:文中( 1 )处正确的答案是( )。
A.SMTP
B.ICMP
C.RARP
D.IGMP