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خذ اختبارات أخرى عبر الإنترنت
السؤال #1
Which of the following is the database used by U2000 on PC/WIN2003?
A. Sybase
B. Microsoft SQL Server 2000correct
C. Foxpro
D. DB2
عرض الإجابة
اجابة صحيحة: B
السؤال #2
The standard Ethernet frame length should not be less than 64 bytes. Which of the following factors cause this limitation? (Multiple Choice)
A. Minimum transmission distance
B. Maximum transmission distance
C. Working mechanism of conflict detection
D. MAC address
عرض الإجابة
اجابة صحيحة: BC
السؤال #3
Which of the following are the service board types of MSTP devices? (Multiple Choice)
A. Interface boardcorrect
B. Service processing boardcorrect
C. Service processing board with interfacescorrect
D. Auxiliary board
عرض الإجابة
اجابة صحيحة: ABC
السؤال #4
Which of the following alarms is not a switching condition for a two-fiber bidirectional multiplex section protection ring?
A. RLOS
B. MS_AIS
C. TU_AIScorrect
D. B2_EXC
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اجابة صحيحة: C
السؤال #5
Which of the following IP addresses is a Class C IP address?
A. C2
B. 10
C. 10011010
D. 127
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اجابة صحيحة: A
السؤال #6
When a working PQ1 board is faulty, the device performs TPS protection switching. Which of the following statements about the switching process are correct? (Multiple Choice)
A. The protection PQ1 board receives and processes the services that are transferred from the D75S board to the protection bus to complete the protection switching
B. If the protection PQ1 board is normal, the cross-connect board sends a switching message to the D75S corresponding to the faulty PQ1 board through the switching control bus
C. The cross-connect board detects that the PQ1 board is faulty through the board status bus
D. The D75S board responds to the switching message by transferring services to the shared protection bus and stopping sending services to the faulty PQ1 board
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اجابة صحيحة: ABCD
السؤال #7
When setting the LCAS mode, follow the following principles: 1. If devices at the two ends are both Huawei devices, set them to the "Standard Mode". 2. If a Huawei device is interconnected with a third-party device, set the interconnected devices to the same mode according to the mode supported by the third-party device.
A. TRUE
B. FALSE
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اجابة صحيحة: B
السؤال #8
What are the following steps for low-speed services to be multiplexed into high-speed SDH services? (Multiple choice)
A. Mappingcorrect
B. Overhead Insertion
C. Positioningcorrect
D. Multiplexingcorrect
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اجابة صحيحة: ACD
السؤال #9
What is the function of the overhead TCM in ODUk?
A. Channel monitoring unlocking
B. Path Trace Identifier Overhead
C. Tandem connection monitoring overheadcorrect
D. General communication channel overhead
عرض الإجابة
اجابة صحيحة: C
السؤال #10
In the frame structure of SDH signals, there are abundant overhead bytes used for operation, administration, and maintenance (OAM). The overhead bytes account for ( ) of all bits in the entire frame and greatly enhance the monitoring functions of the network.
A. 1/10
B. 1/20correct
C. 1/30
D. 1/40
عرض الإجابة
اجابة صحيحة: B
السؤال #11
Which of the following statements about the MST functional module are correct? (Multiple Choice)
A. The MST is both the source and sink of the Mcorrect
B. The MST implements the BIP-8 statistics calculation of the B2 byte
C. The MST returns bit error information, but not the specific number of bit errors
D. The MST provides the E2 orderwire channel
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اجابة صحيحة: AC
السؤال #12
When the bridge uses ivl learning mode, an entry in the MAC address table is created based on the source MAC address and source port of the teach frame. This entry applies to all VLANs
A. True
B. False
عرض الإجابة
اجابة صحيحة: B
السؤال #13
A 1510 nm optical supervisory channel can be effectively amplified after it passes an EDFA.
A. TRUE
B. FALSEcorrect
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اجابة صحيحة: B
السؤال #14
When serious bit error seconds occur in the PM segment of ODUk, the network management will report the ODUk_PM_ES alarm.
A. True
B. Falsecorrect
عرض الإجابة
اجابة صحيحة: B
السؤال #15
QinQ technology is a technology of VLAN nesting. QinQ complies with IEEE 802.1q recommendations, and it is also a technology of VLAN extension.
A. True
B. Falsecorrect
عرض الإجابة
اجابة صحيحة: B
السؤال #16
A. The value range of U-PTR is 0~782. When the receiving end receives invalid pointer values for 8 consecutive frames, which of the following alarms will the device generate?
A. AU-AIS
B. AU-LOPcorrect
C. MS-AIS
D. MS-RDI
عرض الإجابة
اجابة صحيحة: B
السؤال #17
When a bridge uses the IVL learning mode, the entry in the MAC address table is created according to the source MAC address and source port of the data frame. This entry is valid for all VLANs.
A. TRUE
B. FALSEcorrect
عرض الإجابة
اجابة صحيحة: B
السؤال #18
If a bit error occurs in the SDH network, the service signal recovered after the signal is decapsulated must have a bit error.
A. True
B. Falsecorrect
عرض الإجابة
اجابة صحيحة: B
السؤال #19
The standard Ethernet frame length should not be less than 64 bytes Which of the following factors contribute to this limitation? (Multiple choice).
A. Minimum transmission distance
B. Maximum transmission distance
C. How conflict detection works
D. MAC address
عرض الإجابة
اجابة صحيحة: BC
السؤال #20
The number of network elements (including REG) in a two-fiber bidirectional multiplex section shared protection ring can exceed 16.
A. Truecorrect
B. False
عرض الإجابة
اجابة صحيحة: A
السؤال #21
The device IP addresses of the gateway network element and non-gateway network element must be set in the same network segment.
A. True
B. Falsecorrect
عرض الإجابة
اجابة صحيحة: B
السؤال #22
The clock unit can only access the external clock source as the timing signal source of the system through the external clock interface. In addition, it can also output the processed clock and provide the clock source for other devices that need timing.
A. True
B. Falsecorrect
عرض الإجابة
اجابة صحيحة: B
السؤال #23
Compared with dense wavelength division multiplexing (DWDM) systems, crude glass division multiplexing (CWDM) systems provide a certain amount of glass length and transmission distance within (kmkm), which greatly reduces system cost and has strong flexibility
A. 50
B. 100
C. 200
D. 20
عرض الإجابة
اجابة صحيحة: B
السؤال #24
Compared with a dense wavelength division multiplexing (DWDM) system, a coarse wavelength division multiplexing (CWDM) system provides a certain number of wavelengths and a transmission distance within ( ) km, which greatly reduces system cost and has strong flexibility.
A. 50
B. 100
C. 200
D. 20
عرض الإجابة
اجابة صحيحة: B
السؤال #25
K1 and K2 bytes can transmit APS switching signaling, and can also indicate that the signal of the multiplex section is invalid.
A. Truecorrect
B. False
عرض الإجابة
اجابة صحيحة: A
السؤال #26
The optical amplifier unit compensates for line losses and extends the transmission distance. Connecting multiple optical amplifier units in cascaded mode allows for extended transmission distances without following the system.
A. ATrue
B. BFalse
عرض الإجابة
اجابة صحيحة: B
السؤال #27
The levels of forced switching, fiber break switching, manual switching, and practice switching are arranged from high to low.
A. Truecorrect
B. False
عرض الإجابة
اجابة صحيحة: A
السؤال #28
Which of the following is the monitoring overhead for monitoring and reporting OTUk_DEG and OTUk_EXC alarms?
A. SMcorrect
B. PM
C. TCMi
عرض الإجابة
اجابة صحيحة: A
السؤال #29
The number of bit error blocks on each VC4 channel is detected by B3 on the receiving side. At the same time, the information is sent back to the sender via Q, and HP-REI and HP-FEBBE report on the sender.
A. AK3 (b1-b4)
B. BG1 (b5-b8
C. CG1 (b1-b4)
D. DJ(bt-4)
عرض الإجابة
اجابة صحيحة: C
السؤال #30
After mapping and multiplexing, 4 channels of ODU2 signals can be multiplexed into 1 channel of OTU3[ V ] signal, while for ODU2e signal, only 3 channels are needed to be multiplexed into 1 channel of OTU3 [V] signal.
A. Truecorrect
B. False
عرض الإجابة
اجابة صحيحة: A

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