帧中继网的用户网络接口协议体系结构分为用户平面和（ ）[1分]
-
100（）[1分]
- A.WiMAX
- B.WiMAX2
- C.LTE AIE
- D.IMT-Advanced
-
99（）[1分]
- A.1
- B.2
- C.3
- D.4
-
98（）[1分]
- A.two
- B.three
- C.four
- D.five
-
The approaching 4G mobile communication systems are projected to （ ） still remaining problems of 3G systems and to provide （ ） newservices ,from high-quality voice to high-definition video to high data-rate wireless channels.[1分]
- A.solve
- B.solving
- C.reduce
- D.increase
-
Deploying enhanced broadband services over existing network infrastructure （ ）in increase of the network complexity and therefore,extraexpenses on network management and maintenanc
- A.[1分]
- B.results
- C.resulted
- D.resulting
- E.result
-
The approaching 4G mobile communication systems are projected to （ ） still remaining problems of 3G systems and to provide （ ） newservices ,from high-quality voice to high-definition video to high data-rate wireless channels.[1分]
- A.all kinds of
- B.all sorts of
- C.a kind of
- D.a wide varieyt of
-
4G is the fourth generation wireless technology adopted by the （ ） and carriers around the worl
- A.[1分]
- B.IEEE
- C.ISO
- D.ITU
- E.ETO
-
Nobody had predicted the scale of impact of （ ） communications and that it world be one of the largest businesses in the history of mankind with and immense impact on all economies.[1分]
- A.microwave
- B.satellite
- C.cell
- D.cellular
-
分布式数据库中的数据分布在不同节点上，有的事务分解成不同节点上的多个局部事务，若某个局部事务不能正常提交，则必须撤销所有其他节点已提交的局部事务。事务的这种性质，被称为事务的（ ）。[1分]
- A.原子性
- B.透明性
- C.健壮性
- D.一致性
-
在通信专业中，WDM的英文全称是（ ），“吞吐量”英文通常翻译为（ ）。[1分]
- A.Wierless Digital Modulation
- B.Wave Division Multiplexing
- C.Wavelength Division Multiplexing
- D.Wireless Data Modulation
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