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The VoIP gateway can perform the digitization, () and encapsulation required, and it controls the setup of VoIP calls between the calling device and the called deviceA.amplificationB.depressionC.radiationD.compression
题目
The VoIP gateway can perform the digitization, () and encapsulation required, and it controls the setup of VoIP calls between the calling device and the called device
A.amplification
B.depression
C.radiation
D.compression
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第1题：
You are the network administrator for Ezonexam. You are planning to upgrade 35 Windows NT Server 4.0 computers to Windows 2000 Server. You want to accomplish the upgrades by using a distribution server. The Windows NT Server 4.0 computers support a tight production schedule that requires them to be online from 8:00 A.M. to midnight, seven days a week. You schedule the upgrade to run during non-business hours. Because of the limited amount of time the upgrades must be performed as quickly as possible.
You want to complete the upgrades before production begins in the morning.
What should you do?
A．Perform. an unattended installation by running the winnt32 command and the /cmdcons switch.
B．Perform. an unattended installation by running the winnt32 command and specify the use of a .txt file and a uniqueness database file.
C．Perform. an unattended installation by running the winnt command and specify the use of a .txt file and a uniqueness database file.
D．Perform. an unattended installation by using a Winnt.sif file with a commands section that initiates the Update.exe command in quiet mode.
正确答案：B
解析：Explanation: Performing an unattended installation from a distribution server will work since the upgrade must be done in non-business hours.
An answer file provides the generic answers to setup questions. This is typically a file with a .txt extension (although the extension does not matter).
A uniqueness database file: This file, which has a .udf extension, provides the answers to computer specific questions that will change from machine to machine (for example, the computer name). Thus it identifies names of computers.
Incorrect answers:
A: This /cmdcons switch specifies that files required for command-line repair console be installed when making use of winnt32.exe. This is not what is required; you need to completer upgrades and not repair.
C: The winnt.exe command line is used in DOS-based and 16-bit installations.
D: To use a bootable CD-ROM for a fully automated operating system installation, the answer file must be called Winnt.sif and be located on a floppy disk. This is not how the upgrade is envisaged under the given circumstances.
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第2题：
A goal of the()process is to determine the correctness of deliverables.A.Perform. Quality Assurance
B.Plan Quality Management
C.Control Quality
D.Perform. Quality Improvement
参考答案：C -
第3题：
You are the network administrator for Ezonexam.com.
You are planning to install 10 new Windows 2000 Server computers. Ezonexam has a tight production schedule that requires no changes be made to the Active Directory except during scheduled outages. You schedule the installations during an upcoming network outage which will occur betweenmidnight and 8:00 A.M.
You want to complete the installations before production begins in the morning.
What should you do?
A．Perform. the installations by using four floppy disks create with the Makebt32.exe utility.
B．Perform. the installations by using four floppy disks create with the Makeboot.exe utility.
C．Perform. the installations by using the Windows 2000 Installation compact disc.
D．Perform. the installations by using the Windows 2000 Installation compact disc and a floppy disk containing a Winnt.sif file.
正确答案：D
解析：Explanation: We must use Setup Manager to create a winnt.sif. We must then copy this file to a floppy. Then start the installation process from the CD-ROM and insert the floppy disk. The installation process will be a fully automated unattended installation.
Incorrect answers:
A: Makebt32.exe is used to create four installation startup disks. This is not automated.
B: Makeboot.exe is used to make Windows 2000 setup floppy disks.
C: Performing the installation using the Windows 2000 Installation CD alone is not what is required in this instance.
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第4题：
以下关于VoIP的描述不正确的是(60)。
A．VoIP系统一般由IP电话终端、网关(Gateway)、网(关)守(Gatekeeper)、网管系统、计费系统等几部分组成
B．在实现方式上，VoIP有电话机到PC、PC到电话机和PC到PC等三种方式
C．VoIP的关键技术包括信令技术、编码技术、实时传输技术、服务质量(QoS)保证技术以及网络传输技术等
D．VoIP的核心与关键设备是IP电话网关
正确答案：B
解析：本题考查VoIP的相关知识点。在实现方式上，VoIP有电话机到电话机、电话机到PC、PC到电话机和PC到PC等4种方式。最初VoIP方式主要是PC到PC，利用IP地址进行呼叫，通过话音压缩、打包传送的方式实现因特网上PC机间的实时话音传送。话音压缩、编解码和打包均通过PC上的处理器、声卡、网卡等硬件资源完成，这种方式和公用电话通信有很大的差异，且限定在因特网内，所以有很大的局限性。电话到电话是指普通电话经过电话交换机连到IP电话网关，用电话号码穿过IP网进行呼叫，发送端网关鉴别主叫用户，翻译电话号码/网关IP地址，发起IP电话呼叫，连接到最靠近被叫的网关，并完成话音编码和打包，接收端网关实现拆包、解码和连接被口LJ。对于电话到PC或PC到电话的情况，则由网关来完成IP地址和电话号码的对应和翻译，以及话音的编解码和打包。 -
第5题：
以下下关于VoIP的描述不正确的是(60)。
A．VoIP系统一般由IP电话终端、网关(Gateway)、网(关)守(Gatekeeper)、网管系统、计费系统等几部分组成
B．在实现方式上，VoIP有电话机到PC、PC到电话机和PC到PC等3种方式
C．VoIP的关键技术包括信令技术、编码技术、实时传输技术、服务质量(QoS)保证技术以及网络传输技术等
D．VoIP的核心与关键设备是IP电话网关
正确答案：B
解析：本题考查VoIP的相关知识点。
在实现方式上，VoIP有电话机到电话机、电话机到PC、PC到电话机和PC到PC等4种方式。最初VoIP方式主要是PC到PC，利用IP地址进行呼叫，通过语音压缩、打包传送方式，实现因特网上PC机间的实时话音传送，话音压缩、编解码和打包均通过PC上的处理器、声卡、网卡等硬件资源完成，这种方式和公用电话通信有很大的差异，且限定在因特网内，所以有很大的局限性。电话到电话即普通电话经过电话交换机连到IP电话网关，用电话号码穿过IP网进行呼叫，发送端网关鉴别主叫用户，翻译电话号码/网关IP地址，发起IP电话呼叫，连接到最靠近被叫的网关，并完成话音编码和打包，接收端网关实现拆包、解码和连接被叫。对于电话到PC或是PC到电话的情况，是由网关来完成IP地址和电话号码的对应和翻译，以及话音编解码和打包。 -
第6题：
以下关于VoIP的描述不正确的是(1)。
A．VoIP系统一般由IP电话终端、网关(Gateway)、网(关)守(Gatekeeper)、网管系统、计费系统等几部分组成
B．在实现方式上，VoIP有电话机到PC、PC到电话机和PC到PC等3种方式
C．VoIP的关键技术包括信令技术、编码技术、实时传输技术、服务质量(QoS)保证技术以及网络传输技术等
D．VoIP的核心与关键设备是IP电话网关
正确答案：B
解析：在实现方式上，VOIP有电话机到电话机、电话机到PC、PC到电话机和PC到PC等4种方式。