H35-260 HCSA-Field-Transmission & PTN V1.0 Questions and Answers

Auto-negotiation flow control mode

Non-auto-negotiation flow control mode

Both of the above

None of the above

8 10GE+12 GE

20 GE/FE

Otu1

STM-16

Optical Transponder Board

Combine/demultiplex board

Raman magnifying board

EDFA slab

The received signal is attenuated too much

The signal sent by the peer station has no frame structure

The receiving direction of the board is faulty

Broken fiber

The hardware supports the transmission of messages

Support real-time monitoring of performance events such as packet loss rate and delay

Can be used to trigger protection switching

Tunnel's OAM and PW OAM are related and affect each other

The input optical power of the OTU board is too high or too low

Optical fiber failure of optical cable or multiplexer

The signal is lost too much in the transmission of line C

Abnormal external environment

True

False

-2

-3

-4

-5

Translated from Chinese (Simplified) to English - www.onlinedoctranslator.com

The dispersion compensation is unreasonable, such as under-compensation or over-compensation

The optical power of the incoming fiber is too high or too low

The performance of the transmitting laser of the OTU board at the originating end deteriorates

The pigtail connector is seriously polluted

OSC board failure

True

False

True

False

Solve the problem of increasingly scarce public network VLAN ID resources

Users can plan their own private network VLAN ID

Provide a simpler L3VPN solution

Make the user network more independent

The L2VE interface can be directly selected as a member port of MC-LAG

Configurable to load burden mode

The higher the active/standby priority value, the lower the priority

The heartbeat is carried by unidirectional LSP and configured with 1:1 protection

True

False

OPDK

ODUK

OTUK

OMS

True

False

The jitter buffer time represents the size of the buffer

Packet loading time refers to the length of time for PW packets to load TDM frames

Packet loading time, the configuration of NEs at both ends must be the same

The value of the packet loading time cannot be less than the jitter buffer time

It is composed of all L2 routers (including L1/L2)

can be discontinuous

For inter-area routing

Identify with area 0

Create a loopback interface address on the active L3

Create the BFD between the main L3 Loopback interface device L3 and the EPC port

The standby L3 configures the standby traceroute BFD to the EPC

The primary L3 configures the backup traceroute BFD to the EPC

Ingress

Lable

Transit

Egress

The IP address configured before the Layer 3 port is added to the UNI of the L3VPN

Create the UNI port from the base station direction as a VLAN aggregation sub-interface

Enable ARP proxy on VLAN aggregation sub-interfaces

The IPs of the two service access ports in the direction of the base station are the same IP

8100

8847

8147

88A8

True

False

The Raman amplifier selects different pump sources to amplify signals in different bands, so the Raman amplifier has no gain bandwidth limit in theory, while the EDFA has a range of gain bandwidth

The equivalent noise figure of the Raman amplifier is smaller than that of the EDFA

The gain calculation/testing method of Raman amplifier and EDFA is consistent, both are "gain = output power - input power"

The gain medium of Raman amplifier is transmission fiber: while the gain medium of EDFA is EDF (Erbium Doped Fiber)

Routing loops may occur when different routing domains import routes from each other

Routing loops can only be generated by dynamic routing protocols

Routing loops prevent packets from reaching their destination correctly and cause link congestion

The packet is routed circularly between two or more routers until the TTL is reduced to 0 and

discarded

True

False

ATE

STI

ER

AUX

8

9

10

11

850nm.1310nm.1500nm

850nm, 1310nm.1550nm

850nm, 1330nm, 1550nm

800nm, 1310nm, 1550nm

X2 traffic forwarding on the same network segment does not require Layer 3 routes or interfaces

For forwarding in the X2 flow between base stations on different network segments under the same L2L3 node, it is necessary to transfer between L3VE sub-interfaces

Different L2L3 nodes must forward the X2 traffic with the base station to the base station, and it must be transited by the L3 node.

X2 traffic forwarding between different cities requires SGW participation

Configure the route to the DHCP server on the PTN

DHCP server address can be configured with multiple

The default relay hop count of DHCP Relay is 255

DHCP Relay is deployed on L2/L3 nodes

version (4bit), identifies the IP version, the current iP version is 4, and the next generation version is 6

TLN Time to live, 8bit), when an IP packet is generated, an initial value will be set, and when an old packet is forwarded from one router to another, the TTL value will decrease by 1. When the TTL is 0, the packet will be

discarded

Protocol (8bit), indicating the protocol type to which the IP payload belongs, and a value of 6 indicates that the IP encapsulation is a TCP segment

Total Length (16bit), indicating the length of the IP header

After the logical fiber connection is completed, no path search operation is required, and the OTS path and OMS path can be automatically generated

When the Och service path exists, create an OTUk path directly, and the network management can automatically create the OTUk path

If there is an Och service path, you can first search for the OTUk path, create the ODUk service layer path, and then create the Client path.

When the Och service path exists, directly create the OTUk path, and the network management can automatically create the OTUk and 0DUk paths.

Larger dispersion tolerance

Using LEDs

Output standard and stable wavelength

Using the method of direct modulation

Client Official Report

External reporting

Engineer's Report

Internal Reporting

Priority

Port MAC address

Preemptive Mode

VRRP group ID

True

False

True

False

Each ring operates independently, and when multiple rings intersect, they operate independently in pairs

The intersection point requires business synchronization

The intersection point requires business synchronization

Once the business reaches the intersection, it will choose to cross the ring

OAM

BFD

8O2.ae

802.ba

True

False

The network element is located at the SDH/PDH boundary

The frequency difference between the network element clock and the network clock

There is a phase difference between the network element clock and the network clock

The NE clock works in hold mode

TUAIS

R-LOS

APSJNDI

BD Status

True

False

NG SDH

WDM

COS

PTN