H35-260 HCSA-Field-Transmission & PTN V1.0 Questions and Answers
In OptiX OSN8800, which of the following boards provides clock time input and output interfaces?
During the debugging of the SDH system, if the E1 port reports a T-ALOS alarm, which of the following actions are meaningful?
Which of the following alarms will be reported when a fiber cut test is performed on a common MSP ring?
During device initialization and commissioning, which of the following configuration descriptions is incorrect?
There are five trigger conditions for the execution of protection switching. According to the priority of the trigger conditions, they are arranged from high to low. Which of the following is correct?
When the data is forwarded by the PTN device, when the value of the TYPE field of the Ethernet header is 8847, what protocol is the inner packet of the encapsulation?
opt ⅸ Datacollector supports black box fault data collection of multiple products. Which of the following products is not supported?
OSN6800 equipment, ND2, TQX report the BUS_ERROR alarm after configuring the power cross-connect, what are the possible reasons?
Which one is wrong in the description of hardware redundancy backup of PTN7900-32?
Which of the following item levels are included in the MPLS-TP OAM detection object?
When the PTN equipment configures the CBS parameters of QoS, the value affects which items are described correctly
The purpose of setting the upper and lower threshold alarms for performance monitoring through professional network management does not include which of the following?
Standard Ethernet frame length should not be less than 64 bytes. Which of the following factors would cause this limitation?
Which of the following statements about the slave subrack SCC function is correct?
Which of the following is the destination MAC address of the Layer 2 header of the data received by the PTN960 from the LTE base station?
Regarding electrical layer service configuration, which of the following statements is false?
According to the IEEE 802JQ standard, where is the VLAN ID field on the Ethernet?
OptiX OSN8800 provides 8 kinds of DCM optical modules, corresponding to compensation distances of 10km, 20km, 40km, 60km, 80km, 100km, 120km and 140km
respectively
When congestion occurs, what are the packet discarding methods supported by OptiX PTN 1900 & 3900?
The MPLS label has four identification fields, Lable, EXP, S and TTL, with a total of 4 bytes, of which Lable occupies 20 bits. The label value 0-15 is reserved for special purposes,
which indicates that the inner payload carried is MPLS-OAM packet. , the label value is which of the following?
Which of the following identification fields in the data packet header of each protocol layer cannot identify the upper layer data type carried by this layer
What are the possible reasons for the unsuccessful OCH creation by the path method?
In the PTN network, the L3 node needs to learn the ARP message to forward the message to the SGW. What is the type of the ARP response message?
In the PTNLTE solution, which source interface is used when deploying multi-hop daily BFD at the core L3 nodes in the prefecture and city?
The frame rate of STM-1, STM-4, STM-16, STM-64 signals are all the same 8000 frames/sec.
MPLS is used to label packets instead of IP forwarding. Which of the following descriptions about MPLS packet encapsulation are correct?
Standard FEC, AFEC and HFEC techniques all increase the FEC overhead, and the coding gains achieved are progressively increased.
In the OSN6800 subrack, when the OTU is inserted in the 17th slot, electrical layer scheduling can be realized
Which of the following are the possible reasons for the disconnection of network elements?
In the path hierarchy of the WDM network, which paths belong to the optical layer?
Regarding the function of backing up and restoring all data in the network management database, which of the following statements is correct?
When the data link layer of a router (IP forwarding) receives a packet whose length is greater than the maximum MTU of the interface that the router will send out, which of the following strategies is adopted?
When creating a PTN tunnel, you can set the priority of the tunnel. There are 0, 1, and 7. The larger the value, the higher the priority.
SNCP switching speed can be improved if SNCP services with the same source, sink or route are grouped
The device IP addresses of gateway network elements and non-gateway network elements must be set in the same network segment
The DCN red copper feature between network elements of PTN, which VLAN number is used by default for DCN self-communication between network elements.
PTN can support in-band DCN. At this time, the port needs to enable the DCN function. Therefore, in CES service, PTN setup cannot be managed by in-band
DCN.
Which of the following queue scheduling mechanisms can ensure the priority of the most urgent and critical services?
If the E1 interface board D75S is not plugged into the OSN 3500 hardware, which indicator light on the PQ1 will light up red?
VLANs are used to isolate Layer 2 broadcast domains. Which of the descriptions of VLANs are correct?
Which of the following protections are protected by electrical layer double transmission and selective reception?
Which items belong to the optical layer path in the path hierarchy of the WDM network?
How many bits does the VLAN ID occupy in the Ethernet frame format marked with IEEE 802.1Q?
Which of the following items can be included in the upgradeable boards of the PTN3900 NE upgrade operation?
Which of the following conditions can cause the board to insert the BDI maintenance signal back to the upstream site?
The U2000 network management supports a variety of external interfaces. Which of the following interfaces can be used when connecting with the network management equipment of other manufacturers?
During the troubleshooting process, if you need to loopback the protected services carried by the NG WDM device, which of the following operations need to be performed first when performing the loopback
operation?
Which of the following descriptions about electrical layer service configuration is wrong?
In the PIN LTE bearer solution, if the link between the core L3 PTN node and the SGW is faulty, what are the triggering detection mechanisms and protection mechanisms?
In WDM systems, the use of dielectric thin film filters (TFFs) is ideal when less than ( ) wavelengths are used.
The 1588V2 clock protocol can realize clock and time synchronization, and the working modes are OC, BC, TC.
In Huawei ' s PTN7900 LTE solution, which of the following protection methods are used in the L2VPN part?
After the optical cable is cut, the optical power is normal and there is no ETH_LOS alarm, but the TUNNEL_LOCV alarm is not cleared. What is the most likely cause?
When PTN carries LTE services, it forwards packets based on MPLS label switching. In the MPLS label, which identification field can be used as a PTN to distinguish the label
at the bottom of the stack?
The ARP protocol is a broadcast-based protocol through which the host can dynamically discover the MAC address corresponding to an address.
When using the LCAS function, which of the following overhead bytes are used to transmit control information?
After a certain distance transmission in the wavelength division system, the optical signal-to-noise ratio of the signal at the receiving end will decrease to a certain extent. The main reason is which of the following?
In CES SATOP encapsulation, PWE3 will transparently transmit 32 time slots of an E1 frame as a whole from one end to the other
According to the deployment plan of the existing network, which protocol does not need to be deployed for the interconnection between PTN equipment and SGW
Which of the following technologies is used in the dynamic BGP MPLS L3VPN to distinguish the same IP address prefix in different VPNs in the BGP protocol?
In the following label operation modes, which options does the PTN device support?
To create a unicast BFD session between two IP addresses in a PIN network, which of the following must be satisfied?
Which of the following descriptions about bit errors in the SDH network is wrong?
NE1 and NE2 are the intersection nodes of the SNCP ring and the SNCP ring. How many SNCP protection groups and how many unidirectional cross-connects should be configured on NE1.
Which of the following is correct?
In the chain networking of Huawei NG-SDH equipment, if the SCC board of a single station is faulty, the site and the downstream site cannot log in.
When creating an electrical layer path, what options (Client, ODUK, ODUflex) may cause the route calculation to fail
Among the maintenance signals at the ODUk level, which of the following maintenance signals are included in the STAT bits of PM and TCM?
When configuring electrical layer crossing, what are the rules for time slot configuration?
Which of the following is the destination MAC address of the Layer 2 header of the data received by the PTN960 from the LTE base station?
Which of the following 7900 single-board software function descriptions are correct?
On the U2000 network management, you can make an inner ring and an outer ring on the PTNE1 port to facilitate testing
IEEE 802.1Q defines the structure of VLAN tags, including TPID, PRI, CR, and VLAN ID. Which of the following is used to classify service
priorities?
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