최신 H31-311_V2.5 무료덤프 - Huawei HCIA-Transmission V2.5
Compared with the dense wavelength division multiplexing system, the sparse wavelength division multiplexing system greatly reduces the cost of the system and has very strong flexibility while providing a certain number of wavelengths and a transmission distance within 100 kilometers.
정답: A
The rate represented by STM-1 is ().
정답:
155Mbit/s
The most effective subnet mask in a point-to-point WAN link is 255.255.255.252.
정답: A
Which of the following statements about the frame structure of SDH signals are correct? (Multiple choice)
정답: A,C,D
Which of the following descriptions about solving the system OSNR limitation problem are correct?
(Multiple choice)
(Multiple choice)
정답: A,C,D
Linear MSP (LMSP) has two modes: 1+1 and 1:1. Additional services can only be configured for the protection channel in the 1:1 mode of LMSP.
정답: A
Nonlinear effects are closely related to optical power. To prevent nonlinear effects, the total optical power on the optical fiber should be less than 29dBm.
정답: A
Users can easily access NCE through a browser without having to install additional traditional client software.
정답: A
Which logical function block generates the R-LOS alarm?
정답: D
FAS is the frame alignment overhead, with a length of 6 bytes, located in the 1st row and the 1st to 6th columns. The 1st to 3rd bytes are 3 OA1 bytes, each OA1 is always "1111 0110", which is F6 in hexadecimal. The 4th to 6th bytes are 3 OA2 bytes, each OA2 is always "0010 1000", which is 28 in hexadecimal.
정답: A
There are many types of optical wavelength division multiplexers. Which ones are listed below?
(Multiple choice)
(Multiple choice)
정답: A,B,C
GFP-F is a packet data (PDU) oriented processing mode. It encapsulates the entire packet data into the GFP payload information area, does not make any changes to the encapsulated data, and decides whether to add a payload area detection domain based on needs.
정답: B
The thickness, material and refractive index of the fiber core and cladding material have a decisive influence on the properties of the optical fiber.
정답: A
Chromatic dispersion includes material dispersion and waveguide dispersion. Generally, only material dispersion and waveguide dispersion are considered in single-mode optical fiber.
정답: A
Establishing a fixed connection for data forwarding between the designated external physical port, VCRTUNK port and the designated LP port of the designated VB is called hanging.
정답: A