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نصائح اجتياز امتحان الشهادة

آخر أخبار الامتحانات ومعلومات الخصم

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نعم، أرسل لي النشرة الإخبارية

خذ اختبارات أخرى عبر الإنترنت
السؤال #1
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 a processed clock and provide a clock source for other devices that need timing.
A. True
B. False
عرض الإجابة
اجابة صحيحة: B
السؤال #2
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 #3
When a fiber cut test is performed on a normal MSP ring, which of the following alarms is reported? (Multiple Choice)
A. TU - AIS
B. R - LOS
C. APSJNDI
D. BD STATUS
عرض الإجابة
اجابة صحيحة: BC
السؤال #4
Measure the False correction capability of fec with encoded gain. Which of the following statements about the coding gain is incorrect?
A. When ber is constant, the OSNR saved by correcting the encoding is called the encoding gain
B. The False correction capability of B
C. The coding gain of the in-band FEC is greater than the coding gain of the out-of-band FEC
D. The coding gain of D
عرض الإجابة
اجابة صحيحة: C
السؤال #5
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 #6
The frame structure of 0DU4 is four times that of ODU1.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #7
When using the LCAS function, which of the following overhead bytes is used to transmit control information? (Multiple Choices)
A. M1
B. H4
C. K2
D. K4
عرض الإجابة
اجابة صحيحة: BD
السؤال #8
The rates of the SF64 and SL64 boards are both STM-64. Therefore, the two boards can be interconnected.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #9
Which of the following is not a non-linear effect?
A. APMD
B. BSPM
C. CSRS
D. DFWM
عرض الإجابة
اجابة صحيحة: A
السؤال #10
In the 2.5G MSP ring consisting of four MSTP sites, when a protection switching occurs, which of the following statements about the alarm reporting is correct?
A. The PS alarm is reported on the tributary board
B. The APS-INDI alarm is reported on the XCS board
C. The APS-INDI alarm is reported on the system control board
D. The APS-INDI alarm is reported on the line board
عرض الإجابة
اجابة صحيحة: B
السؤال #11
When a fiber cut test is performed on a normal MSP ring, which of the following alarms is reported? (Multiple Choice)
A. TU-AIS
B. R-LOS
C. APSJNDI
D. BD STATUS
عرض الإجابة
اجابة صحيحة: BC
السؤال #12
The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots
A. Unidirectional path protection ring
B. SNCP ring
C. Bidirectional MSP ring
D. All of the above
عرض الإجابة
اجابة صحيحة: C
السؤال #13
Which factors determine the optical signal-to-noise ratio (OSNR) of the receiving end to a certain extent After the signal transmission in the WOM system is transmitted over a certain distance, the "oSNR" of the receiving end of the optical signal-to-noise ratio is reduced to a certain extent. Which of the following is the main cause?
A. Use EDFA
B. Use of multi-density multiplexers and multiplexers
C. Do not use new optical fibers
D. Optical fiber attenuation is too high
عرض الإجابة
اجابة صحيحة: A
السؤال #14
Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?
A. SPI <> RST <> MST <> MSP<> MSA <> HPT
B. SPI <> RST <> MSA<> MSP<> MST <> HPT
C. SPI <> MST<> RST <> MSA <> MSP >HPT
D. SPT<> MS <> MSA<> RST > MSP<> HPT
عرض الإجابة
اجابة صحيحة: A
السؤال #15
There are 48 bits in MAC address. The first ( ) bits make up a unique identifier for the vendor and the last ( ) bits are allocated by the vendor
A. 16, 32
B. 24,24
C. 8,40
D. 32, 16
عرض الإجابة
اجابة صحيحة: B
السؤال #16
K1 and K2 bytes can send APS switching signaling or indicate that the multiplexed segment signal is invalid.
A. True
B. Error
عرض الإجابة
اجابة صحيحة: A
السؤال #17
The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots
A. Unidirectional path protection ring
B. SNCP ring
C. Bidirectional MSP ring
D. All of the above
عرض الإجابة
اجابة صحيحة: C
السؤال #18
Which of the following is the frame indicated by the VC-4 J1 byte by the AU pointer of the current frame?
A. Current framework
B. Next frame
C. Previous frame
D. None of the above
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
In a 2.5GMSP ring consisting of four MSTP sites, which of the following statements about alarm reports is correct when a protection switchover occurs?
A. PS Alarms are reported on the tributary board
B. APS-INDI alarms are reported on the xCS board
C. Report APS-INDl alerts on the system dashboard
D. Report APS-INDI alarms on the board
عرض الإجابة
اجابة صحيحة: B
السؤال #21
Which of the following statements about the multiplex section remote error indication (MS-REI) is correct?1. The B2 byte indicates the transmission channel.2. The Ml byte indicates the transmission channel.3. MS-REI is transmitted from the sink to the source.4. MS-REI is transmitted from the source to the sink.5. Indicates the number of detected bit errors after the sink receives the MS signals.
A. 1 , 4 , 5
B. 2 , 4 , 5
C. 1 , 3 , 5
D. 2 , 3 , 5
عرض الإجابة
اجابة صحيحة: D
السؤال #22
Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?
A. SPI <> RST <> MST <> MSP<> MSA <> HPT
B. SPI <> RST <> MSA<> MSP<> MST <> HPT
C. SPI <> MST<> RST <> MSA <> MSP >HPT
D. SPT<> MS <> MSA<> RST > MSP<> HPT
عرض الإجابة
اجابة صحيحة: A
السؤال #23
K1 and K2 bytes can send APS switching signaling or indicate that the multiplexed segment signal is invalid.
A. True
B. Error
عرض الإجابة
اجابة صحيحة: A
السؤال #24
When configuring LMSP, there are two switching modes: single-ended switching and double-endedswitching. Single-ended switching does not require the protection protocol to be enabled.
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: A
السؤال #25
NE A and NE B are adjacent NEs. If B3 and lower-order bit errors occur in the A->B direction and B1, B2, B3, and lower-order bit errors occur in the B->A direction, which of the following performance events are reported by NE A? (Multiple Choice)
A. RSBBE
B. RSFEBBE
C. MSBBE
D. MSFEBBE
E. HPBBE
F. HPFEBBE
عرض الإجابة
اجابة صحيحة: ACEF
السؤال #26
The clock unit can access an external clock source as the timing signal source of the system only through the external clock interface. In addition, it can output the processed clock and provide the clock source for other devices that require timing.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #27
The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots
A. Unidirectional path protection ring
B. SNCP ring
C. Bidirectional MSP ring
D. All of the above
عرض الإجابة
اجابة صحيحة: C
السؤال #28
The working mode of a port determines the flow control mode of the port.When the working mode is 100 Mbit/s full duplex, which of the following flow control modes can be used?
A. Auto-negotiation flow control mode
B. Non-auto-negotiation flow control mode
C. Both of the above
D. None of the above
عرض الإجابة
اجابة صحيحة: B
السؤال #29
In the 2.5G MSP ring consisting of four MSTP sites, when a protection switching occurs, which of the following statements about the alarm reporting is correct?
A. The PS alarm is reported on the tributary board
B. The APS-INDI alarm is reported on the XCS board
C. The APS-INDI alarm is reported on the system control board
D. The APS-INDI alarm is reported on the line board
عرض الإجابة
اجابة صحيحة: B
السؤال #30
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 #31
NE A and NE B are adjacent NEIf B3 and low-order errors occur in the A->B direction, and B1, B2, B3, and low-order errors occur in the B->A direction, it is caused by Which of the following performance events does NEA report? (Multiple choice).
A. RSBEE
B. RSFEBE
C. MSBBE
D. MSFEBBE
E. HPBBE
F. HPFEBBE
عرض الإجابة
اجابة صحيحة: ACEF
السؤال #32
Which of the following bytes can be used for the orderwire phone between two REG devices?
A. 1
B. 1 and E2
C. one of the above
D. 2
عرض الإجابة
اجابة صحيحة: A
السؤال #33
Which of the following ITLI-T recommendations define the OTN frame structure?
A. G
B. G
C. G
D. G
عرض الإجابة
اجابة صحيحة: D
السؤال #34
Which of the following options is emitted from an ordinary light source, which has all possible vibration directions and is symmetrical to the direction of light propagation?
A. olarized light
B. olarization
C. olarization
D. atural light
عرض الإجابة
اجابة صحيحة: D
السؤال #35
In a WDM system, using a dielectric thin film filter (TFF) is ideal when fewer than ( ) wavelengths are used.
A. 4
B. 8
C. 16
D. 20
عرض الإجابة
اجابة صحيحة: C
السؤال #36
Optical monitoring channel is used for monitoring of WDM optical transmission systems. In the UU-T recommendation, it is preferable to use a 1510 nm wavelength of the a ") rate.
A. 64 kbit/s
B. 192 kbit/st
C. 2 Mbit/s
D. 5676 kbit/s
عرض الإجابة
اجابة صحيحة: C
السؤال #37
The 1510nm optical monitoring channel can be effectively amplified after passing through EDFA.
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: B
السؤال #38
When performing fiber cut-off test on an ordinary MSP ring, which of the following alarms will be reported? (Multiple choice).
A. YOU-AIS
B. R-LOS
C. APSJNDl
D. BD
عرض الإجابة
اجابة صحيحة: BC
السؤال #39
The device IP address of the gateway element and the non-gateway element must be set in the same network segment.
A. True
B. Error
عرض الإجابة
اجابة صحيحة: B
السؤال #40
Which of the following is not an optical-layer board?
A. Optical multiplexer board
B. Optical supervisory board
C. Optical transponder board
D. Optical add/drop multiplexing board
عرض الإجابة
اجابة صحيحة: B
السؤال #41
Which of the following ITLI-T recommendations define the OTN frame structure?
A. G
B. G
C. G
D. G
عرض الإجابة
اجابة صحيحة: D
السؤال #42
When the number of block errors detected by the B2 byte received at the recerve end is returned to the transmit end through the Ml byte, which of the following alarms or performance events are reported at the transmit end?
A. MS_FEBBF
B. MS_AIS
C. MS_REI
D. MS_BBF
عرض الإجابة
اجابة صحيحة: AC
السؤال #43
In the 2.5G MSP ring consisting of four MSTP sites, when a protection switching occurs, which of the following statements about the alarm reporting is correct?
A. The PS alarm is reported on the tributary board
B. The APS-INDI alarm is reported on the XCS board
C. The APS-INDI alarm is reported on the system control board
D. The APS-INDI alarm is reported on the line board
عرض الإجابة
اجابة صحيحة: B
السؤال #44
Which of the following is the frame indicated by the VC-4 J1 byte by the AU pointer of the currentframe?
A. urrent framework
B. ext frame
C. revious frame
D. one of the above
عرض الإجابة
اجابة صحيحة: B
السؤال #45
Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?
A. SPI <> RST <> MST <> MSP<> MSA <> HPT
B. SPI <> RST <> MSA<> MSP<> MST <> HPT
C. SPI <> MST<> RST <> MSA <> MSP >HPT
D. SPT<> MS <> MSA<> RST > MSP<> HPT
عرض الإجابة
اجابة صحيحة: A
السؤال #46
Which of the following is the basic requirement of DWDM system on the light source?
A. utput wavelength is stable
B. igh transmission power
C. sing direct modulation method
D. ow dispersion tolerance
عرض الإجابة
اجابة صحيحة: A
السؤال #47
NE A and NE B are adjacent NEs. If B3 and lower-order bit errors occur in the A->B direction and B1, B2, B3, and lower-order bit errors occur in the B->A direction, which of the following performance events are reported by NE A? (Multiple Choice)
A. RSBBE
B. RSFEBBE
C. MSBBE
D. MSFEBBE
E. HPBBE
F. HPFEBBE
عرض الإجابة
اجابة صحيحة: ACEF
السؤال #48
Manual configuration will clear data on the NE side.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #49
The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots
A. Unidirectional path protection ring
B. SNCP ring
C. Bidirectional MSP ring
D. All of the above
عرض الإجابة
اجابة صحيحة: C
السؤال #50
The SNCP switching speed can be improved if you classify the SNCP services that have the same source, sink, or route into groups.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #51
Which of the following statements about the optical-layer interfaces OTM-n.m and OTM-nr.m of OTN is incorrect?
A. n indicates the number of wavelengths carried by the maximum capacity
B. m indicates the rate
C. r indicates OTM without the OSC function
D. OTM-nr
عرض الإجابة
اجابة صحيحة: B
السؤال #52
K1 and K2 bytes can send APS switching signaling or indicate that the multiplexed segment signal is invalid.
A. True
B. Error
عرض الإجابة
اجابة صحيحة: A
السؤال #53
TU-AIS is often encountered during network maintenance. Which of the following alerts can trigger a TU-AIS alert? (Multiple choice).
A. AU-LOP
B. R-LOS
C. HP-TIM
D. B2-EXC
عرض الإجابة
اجابة صحيحة: ABCD
السؤال #54
K1 and K2 bytes can send APS switching signaling or indicate that the multiplexed segment signal is invalid.
A. True
B. Error
عرض الإجابة
اجابة صحيحة: A
السؤال #55
The frame structure of 0DU4 is four times that of ODU1.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #56
Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?
A. Cross-connecting unit
B. Auxiliary units
C. Tributary units
D. Line units
عرض الإجابة
اجابة صحيحة: D
السؤال #57
K1 and K2 bytes can send APS switching signaling or indicate that the multiplexed segment signal is invalid.
A. True
B. Error
عرض الإجابة
اجابة صحيحة: A
السؤال #58
Which of the following statements about the OTM-n .m and OTMnr .m for OTN are incorrect?
A. n represents the number of wavelengths carried by the maximum capacity
B. m indicates the rate
C. r represents OTM
D. OTM-nr
عرض الإجابة
اجابة صحيحة: B
السؤال #59
Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?
A. Cross-connecting unit
B. Auxiliary units
C. Tributary units
D. Line units
عرض الإجابة
اجابة صحيحة: D
السؤال #60
The U2000 can be flexibly interconnected with different third-party NMSs through northbound interfaces (NBIs), and provides information about physical inventory and alarms to the upper-layer NMSs.
A. ALSE
B. RUE
عرض الإجابة
اجابة صحيحة: B
السؤال #61
Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?
A. Cross-connecting unit
B. Auxiliary units
C. Tributary units
D. Line units
عرض الإجابة
اجابة صحيحة: D
السؤال #62
NE A and NE B are adjacent NEs. If B3 and lower-order bit errors occur in the A->B direction and B1, B2, B3, and lower-order bit errors occur in the B->A direction, which of the following performance events are reported by NE A? (Multiple Choice)
A. RSBBE
B. RSFEBBE
C. MSBBE
D. MSFEBBE
E. HPBBE
F. HPFEBBE
عرض الإجابة
اجابة صحيحة: ACEF
السؤال #63
QinQ technology can be used when multiple users need to share the same VCTRUK and use the sameVLAN ID.
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: A
السؤال #64
The transmission network does not produce information, it only transmits services.
A. RUE
B. ALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #65
Which of the following ITLI-T recommendations define the OTN frame structure?
A. G
B. G
C. G
D. G
عرض الإجابة
اجابة صحيحة: D
السؤال #66
The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots
A. Unidirectional path protection ring
B. SNCP ring
C. Bidirectional MSP ring
D. All of the above
عرض الإجابة
اجابة صحيحة: C
السؤال #67
The clock unit can access an external clock source as the timing signal source of the system only through the external clock interface. In addition, it can output the processed clock and provide the clock source for other devices that require timing.
A. ALSE
B. RUE
عرض الإجابة
اجابة صحيحة: A
السؤال #68
The 1510nm optical monitoring channel can be effectively amplified after passing through EDF
A.
B. True
C. False
عرض الإجابة
اجابة صحيحة: B
السؤال #69
The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots
A. Unidirectional path protection ring
B. SNCP ring
C. Bidirectional MSP ring
D. All of the above
عرض الإجابة
اجابة صحيحة: C
السؤال #70
K1 and K2 bytes can send APS switching signaling or indicate that the multiplexed segment signal is invalid.
A. True
B. Error
عرض الإجابة
اجابة صحيحة: A
السؤال #71
Which of the following statements regarding the protection of the cross-connecting plate 1+1 is correct? (Multiple choice).
A. The source business board sends services to the main and standby crossover boards
B. After the service cross-connection is completed, the active and standby cross-board sends the data of the primary cross-board to the receiving service board
C. The receiving service board can only receive data from the active cross-link board
D. The bus of the two cross-connected modules works independently and does not interfere with each other
E. Dual bus system structure indicates that the service board performs dual data transfer to the cross- connection side and selectively receives data on the cross-connection side
F. Both cross-connecting plates have the same configuration
عرض الإجابة
اجابة صحيحة: ADEF
السؤال #72
Which of the following statements about clock sources is wrong?
A. enerally, the tributary clock is not used as the clock source for the device
B. he internal clock source has the lowest priority due to its low accuracy
C. elect the same SSM protocol for all NEs in the clock protection subnet
D. f the standard SSM protocol is enabled, you need to set the clock source ID
عرض الإجابة
اجابة صحيحة: D
السؤال #73
Which of the following is the electrical layer cost of OTN? (Multiple choice).
A. OPUk
B. ODUk
C. och
D. OTUR
عرض الإجابة
اجابة صحيحة: ABD
السؤال #74
According to the formula "ODUk rate = 239/(239k) x STM-N frame rate", ODU4 The rate is equal to the 239/235xSTM-N Pa rate.
A. True
B. False
عرض الإجابة
اجابة صحيحة: B
السؤال #75
Manual configuration will clear data on the NE side.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #76
The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots
A. Unidirectional path protection ring
B. SNCP ring
C. Bidirectional MSP ring
D. All of the above
عرض الإجابة
اجابة صحيحة: C
السؤال #77
The rates of the SF64 and SL64 boards are both STM-64. Therefore, the two boards can be interconnected.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #78
In the 2.5G MSP ring consisting of four MSTP sites, when a protection switching occurs, which of the following statements about the alarm reporting is correct?
A. The PS alarm is reported on the tributary board
B. The APS-INDI alarm is reported on the XCS board
C. The APS-INDI alarm is reported on the system control board
D. The APS-INDI alarm is reported on the line board
عرض الإجابة
اجابة صحيحة: B
السؤال #79
The rates of the SF64 and SL64 boards are both STM-64. Therefore, the two boards can be interconnected.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #80
The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots
A. Unidirectional path protection ring
B. SNCP ring
C. Bidirectional MSP ring
D. All of the above
عرض الإجابة
اجابة صحيحة: C

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