单选题Which device creates an OEO conversion？ （）AamplifierBattenuatorCregeneratorDlight emitterEoptical switchFoptical receiverGfiber-optic cable

题目
单选题
Which device creates an OEO conversion？ （）
A

 amplifier

B

 attenuator

C

 regenerator

D

 light emitter

E

 optical switch

F

 optical receiver

G

 fiber-optic cable

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3.Which device creates an OEO conversion?()A. amplifierB. attenuatorC. regeneratorD. light emitterE. optical switchF. optical receiverG. fiber-optic cable

4.Which of the following technologies facilitates the conversion of internal private IP addressing toexternal public IP addressing?()A.DHCPB.TCP/IPC.NATD.SNMP

更多“Which device creates an OEO conversion？ （）”相关问题

  • 第1题：

    Which two statements are true about analog to digital conversion of voice signals for use in digital telephony networks？（）

    • A、The three required steps in the analog to digital conversion are sampling，encoding，and compression.
    • B、The three required steps in the analog to digital conversion are sampling，quantization，and compression.
    • C、The three required steps in the analog to digital conversion are sampling，quantization，and encoding.
    • D、The output of the sampling process is a pulse code modulation （PCM） signal.
    • E、The output of the sampling process is a pulse amplitude modulation （PAM） signal.

    正确答案:C,E

  • 第2题：

    What is the reason for running spanning-tree in a Cisco Single-Site Secure Network Foundation Solution？（）

    • A、To protect the network in case someone inadvertently creates a physical loop in it
    • B、To ensure that if a device fails another device automatically take over for it
    • C、To allow management of all network devices
    • D、To aggregate logical network groups together at one central point

    正确答案:A

  • 第3题：

    Which statements concerning casting and conversion are true？（）  

    • A、Conversion from int to long does not need a cast.
    • B、Conversion from byte to short does not need a cast.
    • C、Conversion from float to long does not need a cast.
    • D、Conversion from short to char does not need a cast.
    • E、Conversion from boolean to int using a cast is not possible.

    正确答案:A,B,E

  • 第4题：

    Which of the following is not information provided from an IP phone to a Catalyst switch using  CDP？（）

    • A、 device PoE requirements
    • B、 device IP address
    • C、 device voice VLAN ID
    • D、 device platform

    正确答案:C

  • 第5题：

    When using Device Manager, a red ‘X” indicates which of the following?（）

    • A、Device is disabled
    • B、Device conflict
    • C、No device driver found
    • D、Device has not been digitally signed

    正确答案:A

  • 第6题：

    While adding the forced varyon volume group option， it is decided to create a disk heartbeat  Network over the disk paths. Which HACMP function is used to create disk heartbeat devices？（）

    • A、 The Disk hearbeat facility is initialized when creating enhanced concurrent mode volume groups through HACMP.
    • B、 HACMP does not create the disk heartbeat area directly； RSCT facility creates the area used for the disk heartbeat when the device is started by Group Services.
    • C、 The ’Chdev -v-C " command creates an enhanced Volume Group from an ordinarilyVolume Group. This creates the heartbeat region on the vfirst disk in the chain.
    • D、 The disk heartbeat area on the disk is created and initialized when the device is created inHACMP "Extended Configuration -> Extended Topology -> Disk heartbeat facility" smit path.

    正确答案:A

  • 第7题：

    单选题
    Which of the following is not information provided from an IP phone to a Catalyst switch using  CDP？（）
    A

     device PoE requirements

    B

     device IP address

    C

     device voice VLAN ID

    D

     device platform


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    Which statement is true about the digital to analog conversion process？（）
    A

    the two steps of digital to analog conversion are decompression and reconstruction of the analog signal

    B

    the two steps of digital to analog conversion are decoding and filtering

    C

    the two steps of digital to analog conversion are decompression and filtering of the analog signal

    D

    the two steps of digital to analog conversion are quantization and decoding


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    Which device creates an OEO conversion?（）
    A

    amplifier

    B

    attenuator

    C

    regenerator

    D

    light emitter

    E

    optical switch

    F

    optical receiver

    G

    fiber-optic cable


    正确答案： G
    解析： 暂无解析

  • 第10题：

    单选题
    Which protocol creates a complete database of the network topology/prior to calculating the optimal route?（）
    A

    BGP

    B

    PIM

    C

    OSPF

    D

    RIP


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    You manage your Hyper-V environment by using Microsoft System Center Virtual Machine Manager （VMM） 2008 R2. You plan to perform a virtual-to-virtual （V2V） conversion of existing VMware virtual  machines （VMs）. You need to choose a type of virtual disk that is supported by VMM. Which type should you choose？（）
    A

    vmfs

    B

    vmfs raw

    C

    vmfs Raw Device Map

    D

    vmfs Pass through Raw Device Map


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    Which explanation describes a wireless client IGMP multicast join request using a Cisco Unified Wireless Network v5.2 architecture of AP to WLAN controller?（）
    A

    passed by the AP to its connected switch and then forwarded directly to the connected router，which  creates an MGID table entry

    B

    passed by the AP to the WLAN controller and then forwarded to the source PIM-enabled router，which  creates an MGID table entry

    C

    passed by the AP to the WLAN controller， which creates an MGID table entry before forwarding to the  directly connected PIM-enabled router

    D

    passed by the AP to its connected switch and then forwarded to the rendezvous point router，which  creates an MGID table entry


    正确答案： D
    解析： 暂无解析

  • 第13题：

    Which virtualization technology allows multiple physical devices to be combined into a singlelogical device？（）

    • A、 device visualization
    • B、 device clustering
    • C、 server visualization
    • D、 network visualization

    正确答案:B

  • 第14题：

    Which four are types of functions available in SQL? （）

    • A、string
    • B、character
    • C、integer
    • D、calendar
    • E、numeric
    • F、translation
    • G、date
    • H、conversion

    正确答案:B,E,G,H

  • 第15题：

    Which device creates an OEO conversion？ （）

    • A、 amplifier
    • B、 attenuator
    • C、 regenerator
    • D、 light emitter
    • E、 optical switch
    • F、 optical receiver
    • G、 fiber-optic cable

    正确答案:C

  • 第16题：

    Which statement is true about the digital to analog conversion process？（）

    • A、the two steps of digital to analog conversion are decompression and reconstruction of the analog signal
    • B、the two steps of digital to analog conversion are decoding and filtering
    • C、the two steps of digital to analog conversion are decompression and filtering of the analog signal
    • D、the two steps of digital to analog conversion are quantization and decoding

    正确答案:B

  • 第17题：

    Which of the following types of UPS would be used with equipment that is very sensitive to power fluctuations？（）

    • A、Offline/Standby
    • B、Line interactive
    • C、Rackmount
    • D、Online/Double Conversion

    正确答案:D

  • 第18题：

    Which command creates an image copy？（）

    • A、 backup as copy
    • B、 backup copy
    • C、 copy as backup
    • D、 copy back

    正确答案:A

  • 第19题：

    单选题
    Which virtualization technology allows multiple physical devices to be combined into a singlelogical device？（）
    A

     device visualization

    B

     device clustering

    C

     server visualization

    D

     network visualization


    正确答案： A
    解析： 暂无解析

  • 第20题：

    多选题
    Which two statements are true about analog to digital conversion of voice signals for use in digital telephony networks？（）
    A

    The three required steps in the analog to digital conversion are sampling，encoding，and compression.

    B

    The three required steps in the analog to digital conversion are sampling，quantization，and compression.

    C

    The three required steps in the analog to digital conversion are sampling，quantization，and encoding.

    D

    The output of the sampling process is a pulse code modulation （PCM） signal.

    E

    The output of the sampling process is a pulse amplitude modulation （PAM） signal.


    正确答案： B,E
    解析： 暂无解析

  • 第21题：

    单选题
    Which command creates an image copy？（）
    A

     backup as copy

    B

     backup copy

    C

     copy as backup

    D

     copy back


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    While adding the forced varyon volume group option， it is decided to create a disk heartbeat  Network over the disk paths. Which HACMP function is used to create disk heartbeat devices？（）
    A

     The Disk hearbeat facility is initialized when creating enhanced concurrent mode volume groups through HACMP.

    B

     HACMP does not create the disk heartbeat area directly； RSCT facility creates the area used for the disk heartbeat when the device is started by Group Services.

    C

     The ’Chdev -v-C  command creates an enhanced Volume Group from an ordinarilyVolume Group. This creates the heartbeat region on the vfirst disk in the chain.

    D

     The disk heartbeat area on the disk is created and initialized when the device is created inHACMP Extended Configuration -> Extended Topology -> Disk heartbeat facility smit path.


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    Which of the following technologies facilitates the conversion of internal private IP addressing toexternal public IP addressing?（）
    A

    DHCP

    B

    TCP/IP

    C

    NAT

    D

    SNMP


    正确答案： C
    解析： 暂无解析

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