更多"Relational Model表示()。"的相关试题:
[单项选择]Data Model表示()
A. 数据模型
B. 文件
C. 因特网
D. 记录
[单项选择]在货物描述中,用“MASHINE”表示”MACHINE”,用”MODLE”表示”MODEL”,是否构成不符点()。
A. 前者是不符点,后者不是
B. 前者不是不符点,后者是
C. 两者都不是
D. 两者都是
[单项选择]Which layer of the OSI reference model is responsible for ensuring reliable end-to-end delivery of data?()
A. Application
B. Presentation
C. Session
D. Transport
E. Network
F. Data-Link
[单项选择]Which layer in the OSI reference model is responsible for determining the availability of the receiving program and checking to see if enough resources exist for that communication?()
A. transport
B. network
C. presentation
D. session
E. application
[判断题]转义序列表示法只能表示字符不能表示数字。
[填空题]UHT用M6表示();M2表示();M11表示();V14表示();V76表示();M9表示();压力控制阀V74在设备消毒期间的平衡压力为(),加工生产期间的平衡压力为()。
[单项选择]在电能表组别代号中,D表示单相,S表示三相三线,()表示三相四线,表示无功,B表示标准。
A. M
B. J
C. T
D. K
[单项选择]Which layer of the OSI reference model uses flow control, sequencing, and acknowledgements to ensure that reliable networking occurs?()
A. data link
B. network
C. transport
D. presentation
E. physical
[单项选择]Which layer of the OSI reference model uses the hardware address of a device to ensure message delivery to the proper host on a LAN?()
A. physical
B. datalink
C. network
D. transport
[单项选择]Which IP telephony deployment model uses an H.225 Gatekeeper-Controlled trunk for call admission control within existing H.323 environments?()
A. single site with centralized call processing
B. single site with distributed call processing
C. multisite with centralized call processing
D. multisite with distributed call processing
[单项选择]在电能表组别代号中,D表示单相,s表示三相三线,()表示三相四线,X表示无功,B表示标准。
A. M
B. J
C. T
D. K
[单项选择]At Layer 2 of the OSI model, which component connects a host to the network media?()
A. Hub
B. Switch
C. Bridge
D. NIC
E. Transceiver
[多项选择]At which layers of the OSI model do WANs operate (Choose two.)()。
A. application layer
B. session layer
C. transport layer
D. network layer
E. datalink layer
F. physical layer
[单项选择]At which lay er of the OSI model does the Spanning Tree Protocol (STP) operate at()
A. Lay er 5
B. Lay er 4
C. Lay er 3
D. Lay er 2
E. Lay er 1