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Huawei H31-311 Practice Test - Questions Answers, Page 7

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Question 61

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Which of the following statements about extended ECC is incorrect?

Question 62

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On a Layer 2 switching device, if the Ethernet port is an Access port, the port can receive only the Ethernet frames without VLAN tags or Ethernet frames with the same VLAN ID as the default VLAN ID

Question 63

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Which of the following statements about U2000 license is incorrect?

Question 64

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Which of the following statements about an MSP ring are correct? (Multiple Choice)

Question 65

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Which of the following are optical-layer trails? (Multiple Choice)

Question 66

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The 1310 nm and 1550 nm transmission windows are low-loss windows. In DWDM systems, only the 1550 nm transmission window is used. Which of the following is the major cause?

Question 67

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On the OSN series transport devices, Ethernet ports cannot access tagged frames and untagged frames at the same time,

Question 68

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The number of bit error blocks on each VC-4 channel is detected by B3 at the receive end. At the same time, the information is sent back to the transmit end through ( ), and HP-REI and HP-FEBBE are

Question 69

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An Ethernet private line service is set up between HI (HQ) and H2 (branch) of enterprise H, and five VC-12s are bound in the corresponding VCTRUNK. When one VC-12 fails, the Ethernet private line be

Question 70

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An arrayed waveguide grating (AWG) multiplexer/demultiplexer has the following advantages: short wavelength spacing, large number of channels, and flat passband. It suits DWDM systems with ultra-hig

Question 61

Which of the following statements about extended ECC is incorrect?

Extended ECC is classified into automatic extended ECC and extended ECC in specified mode.

Automatic extended ECC indicates using a straight-through cable to connect the Ethernet ports of two NEs.

Extended ECC in specified mode indicates that the server and client need to be specified.

Automatic extended ECC can be enabled on a maximum of four NEs. In manual extended ECC mode, each server can be connected to a maximum of three clients.

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On a Layer 2 switching device, if the Ethernet port is an Access port, the port can receive only the Ethernet frames without VLAN tags or Ethernet frames with the same VLAN ID as the default VLAN ID of the port.

TRUE

FALSE

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Question 63

Which of the following statements about U2000 license is incorrect?

Each license file corresponds to the equipment serial number (ESN) of one U2000 computer, and therefore can be used only on the corresponding computer.

Formal U2000 license varies depending on operating system platforms. You must apply for a U2000 license based on the specific operating system.

The U2000 license file is named in the 'xxxxxxx.dat' format.

Do not modify license files. Otherwise, the license files will fail.

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Question 64

Which of the following statements about an MSP ring are correct? (Multiple Choice)

The number of nodes on an MSP ring cannot exceed 16.

When creating a protection subnet, select SDH NEs only. Do not select REG or WDM NEs.

When multiple protection subnets occupy the same port on the same board, you must select 'Resource Sharing'.

'Assigned by VC4' means that different VC4s are assigned to different protection subnets to achieve MSP only in some channels.

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Question 65

Which of the following are optical-layer trails? (Multiple Choice)

OCH

OMS

OTS

OSC

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Question 66

The 1310 nm and 1550 nm transmission windows are low-loss windows. In DWDM systems, only the 1550 nm transmission window is used. Which of the following is the major cause?

The working wavelength flatness area of the EDFA is included in this window.

The non-linear effect of the 1550 nm wavelength area is small.

The 1550 nm wavelength area is applicable to long-haul transmission.

None of the above

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Question 67

On the OSN series transport devices, Ethernet ports cannot access tagged frames and untagged frames at the same time,

TRUE

FALSE

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Question 68

The number of bit error blocks on each VC-4 channel is detected by B3 at the receive end. At the same time, the information is sent back to the transmit end through ( ), and HP-REI and HP-FEBBE are reported at the transmit end.

K3 (bl-b4)

G1 (b5-b8)

G1 (bl-b4)

J (bl-b4)

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Question 69

An Ethernet private line service is set up between HI (HQ) and H2 (branch) of enterprise H, and five VC-12s are bound in the corresponding VCTRUNK. When one VC-12 fails, the Ethernet private line between HI and H2 is not interrupted. Therefore, which of the following statements is correct?

The LCAS function is enabled on the ports used by the Ethernet private line service between HI and H2.

The LCAS function is enabled on the VCTRUNK ports used by the Ethernet private line service between HI and H2.

The QinQ function is enabled on the ports used by the Ethernet private line service between HI and H2.

The QinQ function is enabled on the VCTRUNK ports used by the Ethernet private line service between HI and H2.

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Question 70

An arrayed waveguide grating (AWG) multiplexer/demultiplexer has the following advantages: short wavelength spacing, large number of channels, and flat passband. It suits DWDM systems with ultra-high speed and large capacity.

TRUE

FALSE

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Total 186 questions