CMS专题

多选题Which classes does the U.S. government place classified data into？ （）ATop-secretBConfidentialCSBUDSecret

题目
多选题
Which classes does the U.S. government place classified data into？ （）
A

Top-secret

B

Confidential

C

SBU

D

Secret

参考答案和解析
正确答案： A,B
解析： 暂无解析
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相似问题和答案

第1题：

Which database does WX Central Management System (WX CMS) software use to store historical data?()

A. Oracle

B. MySQL

C. Sybase

D. Microsoft Access


参考答案：B

第2题：

When a host transmits data across a network to another host, which process does the data go through?()

A.standardization

B.conversion

C.encapsulation

D.synchronization


参考答案：C

第3题：

Which OSI layer does a Router operate at?

A．the Physical Layer

B．the Data Link Layer

C．the Transfer Layer

D．the Network Layer


正确答案：D

第4题：

Tropical cyclones are classified by form and intensity．Which system does not have closed isobars ________．

A.Hurricane

B.Tropical disturbance

C.Tropical depression

D.Cyclone


正确答案：B

第5题：

Dangerous goods of packaged form and solid form are classified into nine classes according to their ________ ．

A.package forms

B.natures

C.physical properties

D.chemical properties


正确答案：B

第6题：

At which layer of the OSI model does the protocol that provides the information displayed by the "show cdp neighbors" command operate?

A．Transport

B．Physical

C．Application

D．Data link

E．Network


正确答案：D
解析：Explanation:
CDP is a device discovery protocol that runs over Layer 2 (the data link layer) on all Cisco-manufactured devices (routers, bridges, access servers, and switches) and allows network management applications to discover Cisco devices that are neighbors of already known devices. With CDP, network management applications can learn the device type and the Simple Network Management Protocol (SNMP) agent address of neighboring devices running lower-layer, transparent protocols.

第7题：

We learn from Paragraph 1 that ( ).

A． the government is usually the first to name a place

B． many places tend to have more than one name

C． a ceremony will be held when a place is named

D． people prefer the place names given by the government


正确答案：B

第8题：

You are the administrator of a SQL Server 2000 database. You import a table of geographic information from a Microsoft access database into a SQL Server 2000 database. The table has 12,000 rows. Each row averages 5,000 bytes. The table contains lockup data that does not change.

You want to minimize the size of the data file and the time required to back up the data. Which two actions should you take? (Each correct answer presents part of the solution. Choose two)

A. Create a 60-MB data file named geography.ndf

B. Create a 95-MB data file named geography.ndf

C. Create a 60-MB data file named geography.mdf

D. Create a 95-MB data file named geography.mdf

E. Place the table in the PRIMARY filegroup.

F. Place the table in a new filegroup named LOCATION.


正确答案：BF
B,F 解析：Explanation: As SQL Server 2000 supports backing up or restoring individual files or file groups within a database, it is possible to reduce back up time by creating a separate data file table so that only that table will be backed up. This separate data file will have to be a secondary data file because a database can only have one primary data file, which is identified by the .mdf extension, it is the starting point of the database and locates all the other files in the database. Secondary data files are identified by the .ndf extension and comprise all of the data files except the primary data file. A database need not have a secondary data file and it is also possible to create multiple secondary data files on database.

Rows are stored in data pages. Rows cannot cross different data pages. The size of data page in SQL Server 2000 (or SQL 7.0) is 8,192 bytes. We can only store one row in every data page in this scenario. Thus, to estimate the size of the tale we would need to multiply the number of rows, 12,000 in this scenario, by 8,192 bytes. This will give us a table size of 98,304,000 bytes. As computer data storage is calculated using the binary rather than the decimal system, there is 1,024 bytes per Kb and 1,024 Kb per MB, rather than 1,000 bytes per Kb and 1,000 Kb per MB, we thus require a database size of at least 93.75 MB.

Incorrect Answers:
A: The data size of this table is insufficient as a minimum size of 93.75 MB is required.

C: The data size of this table is insufficient as a minimum size of 93.75 MB is required. Furthermore, the .mdf file extension indicate in this solution implies that the data file will be placed in the primary filegroup. It would thus not be possible to backup the data file pertaining to the table only.

D: The .mdf file extension indicate in this solution implies that the data file will be placed in the primary filegroup. It would thus not be possible to backup the data file pertaining to the table only.

E: As SQL Server 2000 supports backing up or restoring individual files or file groups within a database, it is possible to reduce back up time by creating a separate data file table so that only that table will be backed up. This separate data file will have to be a secondary data file because a database can only have one primary data file, which is identified by the .mdf extension, it is the starting point of the database and locates all the other files in the database.

第9题：

Which of the listed classes of fire would most likely occur in the engine room of a vessel?

A.Classes A and B

B.Classes B and C

C.Classes C and D

D.Classes A and D


正确答案：B

第10题：

A computer is connected to the network through a NIC， which has a unique assignment that is called the Ethernet MAC address. Which layer of the OSI model does the MAC address use to communicate with the network？（）

  • A、 network
  • B、 application
  • C、 session
  • D、 data link

正确答案:D

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