多选题Which two statements are true about optical networks?（）ASONET and SDH both use time-division multiplexing.BAn optical transport network system uses time-division multiplexing.CSONET and SDH both use wavelength-division multiplexing.DAn optical transpor

题目
多选题
Which two statements are true about optical networks?（）
A

SONET and SDH both use time-division multiplexing.

B

An optical transport network system uses time-division multiplexing.

C

SONET and SDH both use wavelength-division multiplexing.

D

An optical transport network system uses wavelength-division multiplexing.

相似考题

1.无源光网络由哪些部分构成?()A.OLT（Optical Line Terminal）－光线路终端B.ONU（Optical NetworkUnit）－光网络单元C.ONT（Optical Network Terminal）－光网络终端D.ODN（Optical Distribution Network）－光分配网

2.Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?()A. optical technology for transmitting up to 32 channels over multiple fiber strandsB. optical technology for transmitting up to 16 channels over multiple fiber strandsC. a WDM system that is compatible with EDFA technologyD. a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .

3.You are the network consultant from passguide.com. You have been asked for which two features of optical networks allow data to be transmitted over extremely long distances? （）A、EncryptionB、Bandwidth limitsC、Minimal signal lossD、No EMI

4.Which two statements are true about optical networks?()A. SONET and SDH both use time-division multiplexing.B. An optical transport network system uses time-division multiplexing.C. SONET and SDH both use wavelength-division multiplexing.D. An optical transport network system uses wavelength-division multiplexing.

参考答案和解析
正确答案： B,D
解析： 暂无解析
更多“多选题Which two statements are true about optical networks?（）ASONET and SDH both use time-division multiplexing.BAn optical transport network system uses time-division multiplexing.CSONET and SDH both use wavelength-division multiplexing.DAn optical transpor”相关问题

  • 第1题：

    Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?（）

    • A、optical technology for transmitting up to 32 channels over multiple fiber strands
    • B、optical technology for transmitting up to 16 channels over multiple fiber strands
    • C、a WDM system that is compatible with EDFA technology
    • D、a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .

    正确答案:C,D

  • 第2题：

    Your network contains a server that runs Windows Server 2008 R2. You need to schedule backups of the server. The solution must ensure that multiple versions of the backup are available. Which two possible backup locations should you use？（）

    • A、external hard disk
    • B、internal hard disk
    • C、optical media
    • D、remote shared folder

    正确答案:A,B

  • 第3题：

    无源光网络由哪些部分构成？（）

    • A、OLT（Optical Line Terminal）－光线路终端
    • B、ONU（Optical NetworkUnit）－光网络单元
    • C、ONT（Optical Network Terminal）－光网络终端
    • D、ODN（Optical Distribution Network）－光分配网

    正确答案:A,B,C,D

  • 第4题：

    Which network technology addresses these customer business needs: shrinking budgets and IT staffs, more complex networks, and an increased need for network security?（）

    • A、Optical network
    • B、Storage-area network (SAN)
    • C、Content delivery network (CDN)
    • D、Network management

    正确答案:D

  • 第5题：

    Which network technology addresses these customer business needs: shrinking budgets and IT staffs, more complex networks, and an increased need for network security?（）

    • A、Optical network
    • B、Network management
    • C、Storage-area network (SAN)
    • D、Content delivery network (CDN)

    正确答案:B

  • 第6题：

    A customer wants to install an IBM BladeCenter infrastructure but is concerned about the cost of the internal fibre switches. Consequently. the customer wants to use the Optical Pass-Thru Module （OPM）.  What TRUE statement should be mentioned to the customer regarding the OPM？（）

    • A、You can not put the Optical Pass-Thru Module in the same IBM BladeCenter chassis as a Cisco Intelligent Ethernet Switch.
    • B、Using blade servers with the Optical Pass-Thru Module will require more fibre ports on the external fibre switch.
    • C、The Optical Pass-Thru Module does not provide the customer with an opportunity to reuse their fibre switch.
    • D、The blade servers do not work with the Optical Pass-Thru Module.

    正确答案:B

  • 第7题：

    Which two statements about Oracle Direct Network File System (NFS) are true?（）

    • A、It bypasses the OS file system cache.
    • B、A separate NFS interface is required for use across Linux, UNIX, and Windows platforms.
    • C、It uses the operating system kernel NFS layer for user tasks and network communication modules.
    • D、File systems need not be mounted by the kernel NFS system when being served through Direct NFS.
    • E、Oracle Disk Manager can manage NFS on its own, without using the operating system kernel NFS driver.

    正确答案:A,E

  • 第8题：

    多选题
    Which two statements about Oracle Direct Network File System (NFS) are true?（）
    A

    It bypasses the OS file system cache.

    B

    A separate NFS interface is required for use across Linux, UNIX, and Windows platforms.

    C

    It uses the operating system kernel NFS layer for user tasks and network communication modules.

    D

    File systems need not be mounted by the kernel NFS system when being served through Direct NFS.

    E

    Oracle Disk Manager can manage NFS on its own, without using the operating system kernel NFS driver.


    正确答案： E,A
    解析： 暂无解析

  • 第9题：

    多选题
    You are the network consultant from passguide.com. You have been asked for which two features of optical networks allow data to be transmitted over extremely long distances? （）
    A

    Encryption

    B

    Bandwidth limits

    C

    Minimal signal loss

    D

    No EMI


    正确答案： A,C
    解析： 暂无解析

  • 第10题：

    多选题
    What two descriptions best define DWDM？ （）
    A

    a WDM system that is compatible with EDFA technology

    B

    an optical technology for transmitting up to 16 channels over multiple fiber strands

    C

    an optical technology for transmitting up to 32 channels over multiple fiber strands

    D

    a technology for transmitting multiple optical signals using less sophisticated transceiver designthen CWDM

    E

    a technology for transmitting more closely packed optical signals using more sophisticatedtransceiver designs than CWDM


    正确答案： B,A
    解析： 暂无解析

  • 第11题：

    多选题
    Which two WAN interfaces does the Cisco SRP 520 Series support？ （）
    A

    passive optical network （PON）

    B

    serial

    C

    Fibre Channel

    D

    Fast Ethernet

    E

    ADSL2+


    正确答案： E,D
    解析： 暂无解析

  • 第12题：

    多选题
    Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?（）
    A

    optical technology for transmitting up to 32 channels over multiple fiber strands

    B

    optical technology for transmitting up to 16 channels over multiple fiber strands

    C

    a WDM system that is compatible with EDFA technology

    D

    a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .


    正确答案： A,B
    解析： 暂无解析

  • 第13题：

    A large corporation is concerned about the amount of time it takes to back up their main file server. They are also concerned that their IT technician frequently forgets to change the backup tapes， thereby leaving the company open to data loss. Which backup system would solve both problems？（）

    • A、 RAID
    • B、 tape library
    • C、 optical storage
    • D、 disk to disk to tape

    正确答案:B

  • 第14题：

    Which statement is true about Kompella-based and Martina-based VPNs？（）

    • A、Both use LDP
    • B、Both use BGP
    • C、Both require additional hardware.
    • D、Both use a two-label stack for forwarding.

    正确答案:D

  • 第15题：

    What two descriptions best define DWDM？ （）

    • A、 a WDM system that is compatible with EDFA technology
    • B、 an optical technology for transmitting up to 16 channels over multiple fiber strands
    • C、 an optical technology for transmitting up to 32 channels over multiple fiber strands
    • D、 a technology for transmitting multiple optical signals using less sophisticated transceiver designthen CWDM
    • E、 a technology for transmitting more closely packed optical signals using more sophisticatedtransceiver designs than CWDM

    正确答案:A,E

  • 第16题：

    Which two WAN interfaces does the Cisco SRP 520 Series support？ （）

    • A、 passive optical network （PON）
    • B、 serial
    • C、 Fibre Channel
    • D、 Fast Ethernet
    • E、 ADSL2+

    正确答案:D,E

  • 第17题：

    Which of the following would a company implement to help reduce the cost of electricity？（）

    • A、Shutdown/power policies
    • B、Redundant power supplies
    • C、Use optical mice
    • D、Social engineering policy

    正确答案:A

  • 第18题：

    Which two statements are true about interoperating with Oracle AQ JMS with Oracle WebLogic server ？（）

    • A、 If you select a non-XA JDBC driver， you can use WebLogic AQ JMS in both local & global transactions
    • B、 Oracle WebLogic Server requires a JDBC driver to communicate with the Oracle AQ JMS
    • C、 Oracle WebLogic AQ JMS stand-alone client automatically participate in global transactions managed by Oracle WebLogic Server
    • D、 If you select an XA JDBC driver， you can use WebLogic AQ JMS in both local and global transactions

    正确答案:B,D

  • 第19题：

    单选题
    A large corporation is concerned about the amount of time it takes to back up their main file server. They are also concerned that their IT technician frequently forgets to change the backup tapes， thereby leaving the company open to data loss. Which backup system would solve both problems？（）
    A

     RAID

    B

     tape library

    C

     optical storage

    D

     disk to disk to tape


    正确答案： B
    解析： 暂无解析

  • 第20题：

    多选题
    Which two statements are true about interoperating with Oracle AQ JMS with Oracle WebLogic server ？（）
    A

    If you select a non-XA JDBC driver， you can use WebLogic AQ JMS in both local & global transactions

    B

    Oracle WebLogic Server requires a JDBC driver to communicate with the Oracle AQ JMS

    C

    Oracle WebLogic AQ JMS stand-alone client automatically participate in global transactions managed by Oracle WebLogic Server

    D

    If you select an XA JDBC driver， you can use WebLogic AQ JMS in both local and global transactions


    正确答案： D,B
    解析： 暂无解析

  • 第21题：

    多选题
    Which two statemets are true？（）
    A

    DPT/RPR uses a bi-directional ring consisting of two symmetric counter rotating fibre rings.

    B

    DPT/RPR is defined in the IEEE 802.17 standard and it uses Token Bucket system to avoid collisions on the fiber.

    C

    In DPT/RPR rings， data packets can be sent in one direction （downstream） and the corresponding control packets in the opposite direction （upstream），thus using both fibres concurrently to maximise bandwidth.

    D

    DPT/RPR can be deployed in the Core of the SP networks where point-to-point POS links are used tomake best use of the Bandwidth.


    正确答案： A,C
    解析： 暂无解析

  • 第22题：

    多选题
    Which two statements are true about optical networks?（）
    A

    SONET and SDH both use time-division multiplexing.

    B

    An optical transport network system uses time-division multiplexing.

    C

    SONET and SDH both use wavelength-division multiplexing.

    D

    An optical transport network system uses wavelength-division multiplexing.


    正确答案： B,D
    解析： 暂无解析

  • 第23题：

    多选题
    无源光网络由哪些部分构成？（）
    A

    OLT（Optical Line Terminal）－光线路终端

    B

    ONU（Optical NetworkUnit）－光网络单元

    C

    ONT（Optical Network Terminal）－光网络终端

    D

    ODN（Optical Distribution Network）－光分配网


    正确答案： D,B
    解析： 暂无解析

  • 第24题：

    多选题
    Which two statements about the use of VLANs to segment a network are true? （）
    A

    VLANs increase the size of collision domains.

    B

    VLANs allow logical grouping of users by function.

    C

    VLANs simplify switch administration.

    D

    VLANs enhance network security.


    正确答案： B,D
    解析： 暂无解析

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