H31-311_V2.5 HCIA-Transmission V2.5 Exam Dumps

1. Download the latest HCIA-Transmission H31-311_V2.5 dumps to practice real questions. Exam : H31-311_V2.5 Title : HCIA-Transmission V2.5 https://www.passcert.com/H31-311_V2.5.html 1 / 7

2. Download the latest HCIA-Transmission H31-311_V2.5 dumps to practice real questions. 1.FAS is the frame alignment overhead, the length is 6 bytes, located in the first row, column 1~6, the first~3 bytes are 3 OA1 bytes, and each OA1 is always "1111 0110", that is, 16 F6 in hexadecimal; the 4th to 6th bytes are 3 OA2 bytes, and each OA2 is always "0010 1000", that is, 28 in hexadecimal. A. True B. False Answer: A 2. The LDG supports electrical layer scheduling at the ODU1 level. A. True B. False Answer: B 3. The number of network elements (including REG) in the two-fiber bidirectional multiplex section sharing protection ring can exceed 16. A. True B. False Answer: A 4. In Ethernet, the frame length has a lower limit, which is mainly due to which of the following considerations. A. Carrier sense B. Multi-point access C. Conflict detection D. Improve network bandwidth utilization Answer: C 5. When the PM segment of the ODUk generates seriously errored seconds, the network management will report the ODUk_PM_ES alarm. A. True B. False Answer: B 6. If a network port that supports auto-negotiation is connected to a network port that does not support auto-negotiation, half-duplex to full-duplex may occur. A. True B. False Answer: A 7. Which of the following options are in the low-loss area of single-mode fiber? (Multiple choice) A. 1310nm B. 900nm C.1550nm D.1200nm Answer: AC 2 / 7

3. Download the latest HCIA-Transmission H31-311_V2.5 dumps to practice real questions. 8. What are the following steps for low-speed services to be multiplexed into high-speed SDH services? (multiple choice) A. Mapping B. Overhead Insertion C. Positioning D. Multiplexing Answer: ACD 9. OSN 3500 branch line business has strong up and down capabilities, with 16 branch line outlet slots, 504 2M, 32 E4, 117 E3/DS3, 132 STM-1e, providing STM-1/4/ 16/64 group rate. A. True B. False Answer: A 10. The levels of forced switching, fiber cut switching, manual switching, and practice switching are arranged from high to low. A. True B. False Answer: A 11. Physical port: also known as MAC port, is the external port of the board. A. True B. False Answer: A 12. Which of the following is not included in the basic architecture of MPLS L2VPN. A. AC B. VC C. Tunnel D. S-VLAN Answer: D 13. If a bit error is detected in the B1 byte, which of the following alarms will be reported by the peer end. A. MS-AIS B. RS-BBE C. RS-FEBBE D. Not reporting Answer: D 14. For the OSN6800 device, which of the following slots does not have an electrical layer crossover backplane bus? A. Slot1 B. SIot9 3 / 7

4. Download the latest HCIA-Transmission H31-311_V2.5 dumps to practice real questions. C. SIot10 D. SIot17 Answer: D 15. Complex traffic classification refers to classifying packets according to the ToS (Type of Service) field of IP packets, user priority or EXP field of MPLS packets to identify traffic with different priority characteristics. A. True B. False Answer: B 16. The communication network can be divided into local area network and wide area network according to the geographical scope it covers, and a metropolitan area network between the local area network and the wide area network. The wide area network is characterized by low delay, high data rate and reliable transmission. A. True B. False Answer: B 17. The advantages of WDM mainly include the following. (multiple choice) A. Large capacity, "transparent" transmission of data B. The system is easy to upgrade, and the existing investment can be protected to the greatest extent when upgrading C. Can fully replace SDH equipment D. Compatible with future all-optical switching networks E. High networking flexibility, economy and reliability Answer: ABDE 18. The dispersion coefficient is the delay difference caused by the optical wavelength signal passing through the unit length of optical fiber in the unit wavelength interval, so which of the following is the unit of the dispersion coefficient? () A. ps/nm B. ps/km C.ps/nm.km D.ps/km.nm Answer: C 19. When inserting LCK to the ODUk signal at the local end, what processing will the downstream station system not perform? A. Report ODUk_PM_LCK alarm B. Download ODUk_AIS information C. Return ODUk_PM_BDI D. Insert ODUk_PM_LCK alarm Answer: D 4 / 7

5. Download the latest HCIA-Transmission H31-311_V2.5 dumps to practice real questions. 20. Pointer adjustment is related to which of the following. A. The clock B. Speed C. Expenses D. Scrambling Answer: A 21. Which of the following statements about reuse is correct? In the process of byte interleaved multiplexing, the information payload and pointer bytes of each frame are interleaved and multiplexed according to the original value, and the segment overhead is also multiplexed accordingly. A. There will be 4 times the overhead in STM-1 in STM-4 B. The overhead in STM4 is newly integrated and has only one set of overhead C. The amount of overhead in STM-4 is the same as in STM-1 D. Overhead random generation in STM-4 Answer: B 22. The U2000 client supports installation on Windows, Solaris and SUSE Linux operating systems. A. True B. False Answer: B 23. The optical monitoring channel is set up for the monitoring of the WDM optical transmission system. ITU-T recommends that the wavelength of 1510nm is preferred, and the capacity is 2MHz/s. A. True B. False Answer: B 24. The half-duplex mode must have a collision detection and avoidance mechanism to avoid the situation where multiple devices seize the line at the same time. This mechanism is the so-called CSMA/CD, and the Chinese name is carrier sense multiple access/collision detection . A. True B. False Answer: A 25. The current sparse wavelength division multiplexing system generally works in the band from 1271nm to 1611nm. Which of the following is the channel spacing? A. 10nm B. 5nm C. 20nm D. 18nm Answer: C 5 / 7

6. Download the latest HCIA-Transmission H31-311_V2.5 dumps to practice real questions. 26. Compared with traditional SDH and SONET equipment, which of the following advantages does OTN have? (multiple choice) A. Meet the transmission bandwidth requirements of each optical Tb/s through the wavelength division function B. Provide 2.7Gb/s, 10.7Gb/s, 43Gb/s and even 111.8Gb/s high-speed interface C. Provide up to 5 levels of nested overlapping TCM connection monitoring D. Support virtual concatenation transmission mode to improve and optimize the network structure E. Provide powerful out-of-band FEC function, which effectively guarantees the line transmission performance Answer: ABDE 27. The most effective subnet mask for a point-to-point WAN link is 255.255.255.252. A. True B. False Answer: A 28. OSN 7500 supports a maximum of 2M service boards. Which of the following is correct. A.1 B.2 C.3 D.4 Answer: D 29. Which of the following alarms is not a switching condition for a two-fiber bidirectional multiplex section protection ring? A. R_LOS B. MS_AIS C. TU_AIS D. B2_EXC Answer: C 30. Which of the following are the main functions of the U2000 network management? (multiple choice) A. Topology management B. Performance management C. Troubleshooting D. End-to-end business management Answer: ABD 31. Both QinQ and MPLS can provide users with L2 VPN services, but QinQ is cheaper and easier than MPLS. A. True B. False Answer: A 6 / 7

7. Download the latest HCIA-Transmission H31-311_V2.5 dumps to practice real questions. 32. Which of the following descriptions of MPLS is incorrect. (multiple choice) A. MPLS: Multi-protocol Label Switching, a non-standardized routing and switching technology platform B. P/PE: P (Provider) is the internal node of the MPLS network, and PE (Provider Edge) is the edge of the MPLS network C. The operation of PE->P is Egress, adding MPLS labels to client signals D. The operation of P->P is Ingress, which exchanges MPLS labels Answer: ACD 33. Which of the following is the database used by U2000 on PC/WIN2003? A. Sybase B.Microsoft SQL Server 2000 C. Foxpro D. DB2 Answer: B 34. Which of the following is correct for optical amplifiers and regenerators? (multiple choice) A. Higher regenerator cost B. When the regenerator works at a specific bit rate and a specific frame format C. Where the amplifier can work at any bit rate and frame format D. Optical amplifiers are rarely used, and regenerators are commonly used Answer: ABC 7 / 7