ISL is being configured on a Company switch.  Which of the following choices are true regarding  the ISL protocol? ()A、 It can be used between Cisco and non-Cisco switch devices.B、 It calculates a new CRC field on top of the existing CRC field.C、 It adds 4 bytes of protocol-specific information to the original Ethernet frame.D、 It adds 30 bytes of protocol-specific information to the original Ethernet frame.

ISL is being configured on a Company switch.  Which of the following choices are true regarding  the ISL protocol? ()

  • A、 It can be used between Cisco and non-Cisco switch devices.
  • B、 It calculates a new CRC field on top of the existing CRC field.
  • C、 It adds 4 bytes of protocol-specific information to the original Ethernet frame.
  • D、 It adds 30 bytes of protocol-specific information to the original Ethernet frame.

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先张法施工钢筋张拉时,应力应如何控制?()A、0→初应力→1.05con(持荷2min)→0.9con→con(锚固)B、0→初应力→0.9con→con(锚固)1.05con→(持荷2min)C、0→初应力→0.9con→1.05con(持荷2min)→con(锚固)D、0→初应力→0.9con→con(锚固)→1.05con(持荷2min)

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单选题对于夹片式具有自锚性能的锚具,先张法低松弛力筋张拉程序为 ( )A 0→初应力→1.05σcon→0.9σcon→σcon(锚固)B 0→初应力→1.05σcon(持荷2min)→0→σcon(锚固)C 0→初应力→1.03σcon(锚固)D 0→初应力→σcon(持荷2min锚固)

多选题ISL is being configured on a Company switch.  Which of the following choices are true regarding  the ISL protocol? ()AIt can be used between Cisco and non-Cisco switch devices.BIt calculates a new CRC field on top of the existing CRC field.CIt adds 4 bytes of protocol-specific information to the original Ethernet frame.DIt adds 30 bytes of protocol-specific information to the original Ethernet frame.

单选题You need to connect two Company core switches via an ISL trunk.  Which statement is true  regarding the configuration of ISL trunks? ()A A Catalyst switch cannot have ISL and IEEE 802.1q trunks enabled.B All Catalyst switches support ISL trunking.C A Catalyst switch will report giants if one side is configured for ISL while the other side is not.D ISL trunking requires that native VLANs match.E None of the other alternatives apply

单选题Your company has a mix of employees and contractors. Contractor usernames always begin with"con-"; employee usernames never begin with "con-". You need to give employees access to allresources and give contractors access to a limited set of resources. Employee and contractor roles have been created with the appropriate access privileges, and the realm is set to merge settings for all assigned roles. Which role mapping ruleset would result in the correct access privileges being assigned?()Ausername=* - Employee-role Stop username=con-* - Contractor-roleBusername=* - Employee-role username=con-* - Contractor-role StopCusername=con-* - Contractor-role Stop username=* - Employee-roleDusername=con-* - Contractor-role username=* - Employee-role Stop

单选题下列关于先张法预应力筋张拉程序的选项中,适用于钢筋的是()A0→初应力→1.03δcon(锚固)B0→初应力→1.05δcon(持荷2min)→0.9δcon→δcon(锚固)C0→初应力→δcon(持荷2min锚固)D0→初应力→1.05δcon(持荷2min)→0→δcon(锚固)

判断题“0→1.05con (持荷2分钟)→con ”与“0→1.03con ”两种超张拉程序是等效的。A对B错