1. In Model 1, the overall trend is that the students ____watch ____television have higher test scores. in relation to who shows how much increase less who a decrease scores much around approximately

A . Application B . Presentation C . Session D . Transport E . Internet F . Data Link G . Physical

A . made；is sailing B . has made；is sailing C . made；sails D . has made；sail

A .  the signal to noise of the current optical amplifier B .  the signal to noise of the previous amplifier or source C .  the signal to noise introduced by the optical multiplexer D .  the accumulated noise to signal ratio of the optical channel

A . enable concatenation on the non-root bridge only B . enable concatenation on the root bridge only C . enable concatenation on both the root bridge and non-root bridge D . enable concatenation on the root bridge and set it as desirable on the non-root bridge E . set concatenation as desirable on the root bridge and enable it on the non-root bridge

A . Layer one B . Layer two C . Layer three D . Layer four

A . Applicationlayer B . Presentationlayer C . Sessionlayer D . Transportlayer E . Networklayer F . Datalinklayer G . Physicallayer

A . LLQ B . FIFO C . CBWFQ D . priority queuing E . weighted fair queuing F . IP RTP priority queuing

A . enable concatenation on the non-root bridge only B . enable concatenation on the root bridge only C . enable concatenation on both the root bridge and non-root bridge D . enable concatenation on the root bridge and set it as desirable on the non-root bridge E . set concatenation as desirable on the root bridge and enable it on the non-root bridge

A . It encourages industry standardization by defining what functions occur at each layer of the model. B . It necessitates changes in functionality in one layer to other layers. C . It enables equipment efficiency from different vendors to use the same electronic components. D . It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting. E . It supports the evolution of multiple competing standards, and thus enhances business equipment manufacturing opportunities.

A . session B . physical C . protocol D . gateway E . data link F . transport G . applicatio

A . The gateway voice-capable device is configured to support call control directly performing call setup， call maintenance， and call teardown B . The gateway voice-capable device has a local call routing table configured through a routing protocol. C . The gateway voice-capable device relies on a call agent to support call control. D . The gateway voice-capable device relies on a gatekeeper to support call setup， call maintenance， and call teardown.

A . the signal to noise of the current optical amplifier B . the signal to noise of the previous amplifier or source C . the signal to noise introduced by the optical multiplexer D . the accumulated noise to signal ratio of the optical channel

A.different activities B.different project size C.different project management manner D.different way of activity organization

A．Applicationlayer B．Presentationlayer C．Sessionlayer D．Transportlayer E．Networklayer F．DatalinklayerG.Physicallayer

A．depends on the real exchange rate. The quantity of dollars supplied in foreign-exchange markets depends on the real interest rate B．depends on the real interest rate. The quantity of dollars supplied in foreign-exchange markets depends on the real exchange rate C．and the quantity of dollars supplied in the foreign-currency exchange market depend on the real exchange rate D．and the quantity of dollars supplied in the foreign-currency exchange market depend on the real interest rate

是 否

A．interactive B．bottom-up C．top-down D．interactional