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H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. A PBX of a company in Beijing was originally connected to the operator's telephone network through an analog line, using a total of 18 analog lines.In order to reduce maintenance complexity, it is proposed to apply for a digital line from the operator. ______ is the most economical choice.

A) ATM
B) E1
C) E&M
D) T1

2. Which of the following codes has the lowest requirement for broadband?

A) G726
B) G711
C) G729
D) G723

3. IP OVER IP of GRE encapsulation, the IP protocol number used ________ marking GRE header

4. The interconnection between ordinary telephones, PBX and other equipment has a unified interface standard, including analog and digital interfaces.The following are analog voice interfaces.

A) FXO
B) E1
C) FXS
D) T1

5. In the Ethernet access application, the correct statement about the deployment of the access point AN and the aggregation equipment AGG at the edge of the operator's access network is ____ .

A) When AN adopts a Layer 2 switch, it needs to support and deploy complex Layer 2 isolation and security features on AN and AGG
B) When AN uses a three-layer switch, the maximum number of user terminals that an AGG device can connect to will no longer be limited by the number of its own MAC address table entries
C) the AN taken when a switcher, three switches can team with respect to the end-user access to a higher density to achieve
D) When AN adopts a three-layer switch, it is more helpful to control the scope of the broadcast domain than a two-layer switch

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