H31-311_V2.5 HCIA-Transmission V2.5 Questions and Answers

Which of the following statements about the clock source are incorrect?

Which of the following statements about the EFS4 board are correct? (Multiple choice).

Which of the following is not an EVPLAN feature?

K1 and K2 bytes can send APS switching signaling or indicate that the multiplexed segment signal is invalid.

In the frame structure of the SDH signal, there are large overhead bytes for operation, management, and maintenance (OAM). Overhead bytes account for all bits () of the entire frame and greatly enhance the monitoring capabilities of the network.

In the OSN550, the CXL slot contains a function board that integrates a system control and communication (SCC) unit, a cross-connecting unit, and a clock unit Depending on the functionality and access features provided by the OSN550, there are several types of dashboards

Which of the following statements about the U2000 license is incorrect?

OTM nr.m consists of up to n " multiplexed channels and does not support non-channel-related overhead. The letter "r" indicates a decrease in functionality.

The scope of management of OMSn is the path from the input optical port on the multiplexer unit of the sending site to the output optical port on the multiplexer unit of the receiving site, called the optical multiplexing segment (OMS) path.

Which of the following logical function modules is used to generate exhaust R-LOS alerts?

When configuring VLAN-based service types, which of the following features must be enabled on the port?

After configuring PDH on a per-net element basis, the full trace cannot be searched. Which of the following is a possible cause? (Multiple choice)

Frame-Mapped GFP (GFPF> is a processing mode that targets data encoding blocks such as Fibre Channel and ESCON.

Which of the following alerts does not trigger an AU-AIS alert?

In MSP networking, when the optical fiber is connected between sites, the east light plate of the site is connected to the west light plate of the downstream site, and these stations are connected in turn to form a ring. In this case, the direction from the toko plate of the site to the wine light plate of the downstream station is the direction of the main ring, and the direction of forming the ring is the direction of service.

An unprotected chain consists of four net elements; ME1, NE2, NE3 and NE4.

Create an end-to-end VC4 path NE1-NE4 and add NE5 between NE2 and NE3 for capacity expansion.

The original configuration remains unchanged and no services are configured on the NE5.

In this case, the unprotected chain becomes NE1-NE2-NE5NE3-NE4, how many VC4 paths can be searched?

Which of the following local maintenance endpoints can be used to manage MSTP devices?

output networks require higher costs than belt networks, but provide a more reliable management channel.

Which of the following are the components of the WDM system summer with N glass lengths? (Multiple choice).

After the U2000 sends configuration data to the network element, if the SCC single board authentication fails, the network element enters the installation state.

Some SNCP protection inversion conditions are default, such as AU-AIS and TU-AIS. Other conditions are optional, such as HP-TIM and HP-SLM. Optional conditions can be flexibly set according to the level of the costume.

In WDM systems, it is ideal to use a dielectric thin film filter (TFF) when using less than () wavelengths.

When using a script to back up and restore network configuration data for the U2000, you can change the directory where the export file is saved.

The index is used to folio and delineate the starting position of VC-n in the corresponding AU or TU frame so that the receiving end can correctly remove the corresponding VC from the STM-N The VC and C packages are then separated into separate low-rate signals, such as PDH That is; Low-rate branch signals can be discarded directly from the STM-N signal

The standard Ethernet frame length should not be less than 64 bytes Which of the following factors contribute to this limitation? (Multiple choice).

Optical module parameter "L-64.2" in "2" indicates which of the following working windows?

Which of the following is not a condition that triggers multiplexed segment protection (MSP)?

WDM transmits optical signals multiplexed at multiple rates (wavelengths) through a single optical fiber, and the digital signals carried by these optical signals must have the same rate and data format

The backplane has two 48V power cords, and each board gets two -48V power supplies from the backplane. After combining the power supply via diodes, the various voltages required for each component are obtained by means of a DC/DC power module and a linear mane swap.

Linear MSP (LMSP) has two modes: 1+1 and 1:1. Additional services can only be configured for the protection channel in 1:1 mode of the LMSP.

Which of the following is the frame indicated by the VC-4 J1 byte by the AU pointer of the current frame?

When there is a Critical False In Seconds (SES) in the PM portion of the ODUk layer, which of the following alarms is reported by NMS?

What are the basic features of the U2000? Multiple Choices

Which of the following statements regarding the protection of the cross-connecting plate 1+1 is correct? (Multiple choice).

Which of the following is the VLAN classification method? (Multiple choice).

Which of the following statements about overhead bytes is incorrect?

If a network port that supports autonegotiation is connected to a network port that does not support autonegotiation, you can interconnect in both half-duplex and full-duplex modes.

Bait-doped fiber amplifiers (EDFAs) are a key component of the new generation of optical communication systems. Which of the following is the feature of EDFA? Multiple Choice) □

Which of the following is the configuration mode for the new NE?( Multiple choices).

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.

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.

Only one TCM can be used at one site

The AAC address consists of 46 bits and is globally unique

Which of the following - is the meaning of the eighth-digit MAC address with 1?

The refractive index n1 of the fiber core must be the Q of the cladding refractive Mo n2, which is a necessary condition for transmitting the optical signal in the optical fiber.

When you configure services on a per-NE basis, which of the following protection scenarios does not require subnet configuration before subsequent protection operations?

The value of the MFAS byte increases with the sequence number of the OTUk/ODUK base frame and includes the most () base frames.

When using a script to back up U2000 data, the backup speed is fast because the backup file is small.

When the U2000 is synchronized, the same network metadata as the U2000 is not uploaded to the U2000, and the data that exists on the U200 but does not exist on the network element is deleted.

Both PDH and SDH have globally harmonized standards.

During service configuration, which of the following service levels cannot be selected?

In the system control unit, which of the following databases does not lose data after a power failure? (Multiple choice).

Which of the following bytes can be used for ordenwire calls between two REG devices?

A PAUSE frames use reserved multicast addresses and are not forwarded by bridges or switches. In this way, the PAUSE frame does not generate any additional information.

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?

When configuring the SXCS single board for the OSN3500, which of the following is the access package of the fully configured substand?

The interval between two adjacent pointer alignment events is at least () frames.