Currently, to which of the following modes does network design conform?

• A.Modular
• B.Automatic
• C.Standard
• D.Hierarchical
• E.Modern

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Which of the following link can run PPP instead of HDLC? (Multiple Choice)

• A.PSTN
• B.MSTP
• C.El
• D.ISDN
• E.ATM

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Software upgrade operations are similar for Huawei datacom products. Therefore, before a software upgrade, you only need to briefly read the upgrade guide.

• A.FALSE
• B.TRUE

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Which of the following statements regarding the basic device information check is true?

• A.The device time should be consistent with the actual time (time difference < 24 hours) so that a fault can be accurately located based on the occurrence time.
• B.You can run the display current-configuration command to check the PCB version and the software version of a card.
• C.The debugging functions can be enabled when the device is running properly.
• D.You can run the display patch-information command to check patch information.

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Employees in an enterprise often need to connect to the enterprise's intranet for remote access when going on business.
Which of the following technologies can meet this demand? (Choose two.)

• A.SSL VPN
• B.MPLS VPN
• C.ISDN Dial-in
• D.IPSec VPN

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