# Analisis De Alarmas De Equipos De Transmision

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Quizzes Created: 8 | Total Attempts: 7,623
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• 1.

### Es la prueba de la etapa de radio donde se recomienda verificar el desempeño del AGC

• A.

Prueba de la etapa de recepcion de RF

• B.

Prueba el Radio de alta frecuencia

• C.

Prueba el Radio de baja frecuencia

• D.

Prueba de envio de AGC

A. Prueba de la etapa de recepcion de RF
Explanation
The given correct answer is "Prueba de la etapa de recepcion de RF" which translates to "Test of the RF reception stage". This is the most appropriate answer because the initial statement mentions "verificar el desempeño del AGC" which means "to verify the performance of the AGC". The AGC (Automatic Gain Control) is a feature commonly used in the RF reception stage to adjust the signal strength and maintain a consistent level. Therefore, testing the RF reception stage would involve checking the performance of the AGC.

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• 2.

### Es la prueba de la etapa de radio donde se recomienda verificar el nivel de potencia de salida de FI:

• A.

Prueba de Radio FI

• B.

Pruebas de alta frecuencia

• C.

Pruebas de baja Frecuencia

• D.

Prueba de la etapa del Modem

D. Prueba de la etapa del Modem
Explanation
The correct answer is "Prueba de la etapa del Modem". This is because the given statement mentions verifying the level of output power of the Intermediate Frequency (FI) stage. The Modem stage is responsible for converting the intermediate frequency signal into a digital signal, so it is necessary to test and verify the performance of this stage.

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• 3.

### Es la función que tiene que ver con la aceptación de las señales adaptadas y con el hecho de retirar o agregar los encabezados

• A.

• B.

Terminacion

• C.

Trama

• D.

Bit de señalizacion

B. Terminacion
Explanation
La terminación se refiere a la función de aceptar las señales adaptadas y retirar o agregar los encabezados. En este contexto, la terminación puede implicar la finalización o el cierre de un proceso o una señal. En el contexto de las opciones proporcionadas, la terminación parece ser la opción más adecuada en relación con la función descrita.

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• 4.

### En PDH es la indicación de alarma que se activa cuando desaparece el ritmo de temporización en la señal de línea entrante por lo menos 50 µseg:

• A.

TRF Transmicion de Refaccion de Frecuencia

• B.

TRF Bit rate de transmision y frecuencia

• C.

TRF Perdida de la Señal entrante en una Tributaria

• D.

TRF Transmicion de Radio Frecuencia

C. TRF Perdida de la Señal entrante en una Tributaria
Explanation
In PDH, the indication of alarm that is activated when the timing signal disappears in the incoming line signal for at least 50 microseconds is referred to as "TRF Perdida de la Señal entrante en una Tributaria" which translates to "Loss of incoming signal in a Tributary".

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• 5.

### Esta alarma es un indicador de la pérdida del puntero de la unidad administrativa, proveniente del equipo remoto

• A.

AU4 LOP

• B.

TRF

• C.

AIS

• D.

B3T

A. AU4 LOP
Explanation
This answer suggests that the alarm AU4 LOP is an indicator of the loss of the administrative unit pointer from the remote equipment.

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• 6.

### Esta alarma es un indicador de errores excesivos con valor de E mayor o igual a 10 exp -3 en la tasa de transferencia de bits en la sección regeneradora

• A.

B13R

• B.

AIS

• C.

RS EXC

• D.

MSS

C. RS EXC
Explanation
This answer is correct because RS EXC stands for "Regenerator Section Excessive Errors". The given statement explains that the alarm is indicating excessive errors with a value of E greater than or equal to 10 exp -3 in the bit transfer rate in the regenerator section. Therefore, RS EXC is the appropriate answer as it accurately represents the alarm being described.

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• 7.

### Es la indicación del canal de señalización TS16 que se activa al aparecer dos palabras consecutivas erróneas de sincronización de multitrama

• A.

MFF

• B.

AIU

• C.

BSL

• D.

FR

A. MFF
Explanation
The correct answer is MFF because it is the indication of the TS16 signaling channel that is activated when two consecutive erroneous synchronization words of the multitrame are detected.

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• 8.

### En el cuarto orden se recibe perdida de alineamiento de trama se envía al extremo remoto el bit

• A.

B3

• B.

6 BYTE

• C.

B13T

• D.

H3

C. B13T
Explanation
In the fourth order, when there is a loss of frame alignment, the bit B13T is sent to the remote end.

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• 9.

### Es el bloque de radioenlace que contiene el mezclador de recepción para convertir la señal de R.F. a señal F.I.:

• A.

• B.

Receptor

• C.

Transmisor

• D.

B. Receptor
Explanation
The correct answer is "Receptor." A receptor is the radio link block that contains the reception mixer, which converts the RF signal to an IF signal. The other options listed are not responsible for this conversion process.

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• 10.

### Es la medición mas importante para determinar el desempeño de un radioenlace

• A.

Medicion de la Tasa de Error (BER)

• B.

Perdida de la Señal entrante en una tributaria (TRF)

• C.

Sincronismo de Trama

• D.

Perdida de Señal

A. Medicion de la Tasa de Error (BER)
Explanation
The correct answer is "Medicion de la Tasa de Error (BER)". This is the most important measurement for determining the performance of a radio link. The Bit Error Rate (BER) measurement indicates the number of bits that are received incorrectly compared to the total number of bits transmitted. A lower BER indicates better performance and higher quality of the radio link. By measuring the BER, one can assess the reliability and effectiveness of the radio link in transmitting data accurately.

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• 11.

### En el cuarto orden de PDH indica que en el extremo remoto ha ocurrido perdida de la señal, perdida de alineamiento de trama o alta tasa de error

• A.

B13R

• B.

B3

• C.

H3

• D.

B23T

A. B13R
Explanation
The correct answer is B13R. In the fourth order of PDH, B13R indicates that there has been a loss of signal, loss of frame alignment, or high error rate at the remote end.

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• 12.

### Es el bloque de radioenlace donde se insertan las señales de sincronismo y supervisión

• A.

Transporte

• B.

Transiver

• C.

Modular

• D.

Demodular

C. Modular
Explanation
The correct answer is "Modular" because it refers to the block in a radio link where synchronization and supervision signals are inserted. This suggests that this block is responsible for organizing and controlling the transmission of data in the radio link.

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• 13.

### Esta alarma es un indicador de que existe una incongruencia entre la expectativa de mensaje y lo que se recibe a través del byte J0

• A.

AIS

• B.

RS TIM

• C.

LOS

• D.

MFF

B. RS TIM
Explanation
The correct answer is "RS TIM". This is because RS TIM stands for Remote Supervision-Trouble Indication Message, which is a type of alarm in the AIS (Automatic Identification System) protocol. This alarm indicates that there is a discrepancy or inconsistency between the expected message and the message received through the J0 byte.

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• 14.

### En el terminal óptico cuando se detecta perdida de señal óptica, se genera hacia el demultiplexor la señal de:

• A.

Cuatificacion

• B.

Refraccion

• C.

Transmision optica

• D.

AIS

D. AIS
Explanation
In an optical terminal, when a loss of optical signal is detected, the signal generated towards the demultiplexer is AIS (Alarm Indication Signal).

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• 15.

### Es un indicador de que existe una incongruencia entre la expectativa de mensaje y lo que se recibe a través del byte J1

• A.

RS TIM

• B.

B11T

• C.

AU4 TIM

• D.

B13R

C. AU4 TIM
Explanation
The given answer "AU4 TIM" suggests that there is an incongruence between the expected message and what is received through the byte J1. This could imply that the received message does not match the expected format or content, indicating a discrepancy or error in the communication.

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• 16.

### Corresponde a perdida de trama, o sea, hay errores continuos en los bytes de trama A1-A2

• A.

Orden Extremo Remoto

• B.

LOF Los Of Frame

• C.

LOS Perdida de Señal

• D.

B11T

A. Orden Extremo Remoto
Explanation
The correct answer is "Orden Extremo Remoto." This term refers to a remote end order, which means that there is an issue or error occurring at the remote end of a communication link. In this context, it is likely that the "Orden Extremo Remoto" is causing a loss of frame, resulting in continuous errors in the A1-A2 frame bytes.

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• 17.

### Es una señal conformada de “todos unos” que sustituye a la señal de trafico normal que se ha perdido

• A.

LOS

• B.

LOF

• C.

AIS

• D.

BERR

C. AIS
Explanation
AIS stands for Automatic Identification System. It is a signal composed of "all ones" that replaces the normal traffic signal that has been lost.

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• 18.

### El BIT 13 “B13R” de PDH en estado 1 indica

• A.

Perdida de Señal en el terce Orden del Extremo remoto

• B.

Perdida de Señal en el Segundo Orden del Extremo remoto

• C.

Perdida de Señal en el Primer Orden del Extremo remoto

• D.

Perdida de Señal en el Cuarto Orden del Extremo remoto

D. Perdida de Señal en el Cuarto Orden del Extremo remoto
Explanation
The correct answer is "Perdida de Señal en el Cuarto Orden del Extremo remoto". This means that the BIT 13 "B13R" of PDH indicates a signal loss in the fourth order of the remote end.

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• 19.

### En el cuarto orden cuando se recibe esta señal no se realiza ninguna acción consiguiente, pero es un aviso de problemas en el extremo remoto

• A.

B13R

• B.

B13T

• C.

B13AS

• D.

B13F

A. B13R
Explanation
In the fourth order, when this signal is received, no further action is taken. However, it serves as a warning of problems at the remote end.

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• 20.

### El Bit 3 “B3R” de PCM en estado 0 indica:

• A.

Alarma en equipo

• B.

Alarma en la transmision de Datos

• C.

Sin Alarma en el Extremo Remoto

• D.

Alarma en la parte central

C. Sin Alarma en el Extremo Remoto
Explanation
El Bit 3 "B3R" de PCM en estado 0 indica que no hay alarma en el extremo remoto.

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• 21.

### En el segundo y tercer orden cuando se recibe perdida de alineamiento de trama entonces se envía al extremo remoto la indicación de

• A.

B11R

• B.

B11T

• C.

B13T

• D.

B13R

B. B11T
Explanation
In the second and third order, when there is a loss of frame alignment, the indication B11T is sent to the remote end.

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• 22.

### Es la prueba de la etapa de radio donde se recomienda verificar la prueba de errores

• A.

Prueba de Señal en el extremo Remoto

• B.

Prueba de LOF

• C.

Prueba de LOS

• D.

Prueba de la Etapa del Modem

D. Prueba de la Etapa del Modem
Explanation
The correct answer is "Prueba de la Etapa del Modem". This is because the given statement mentions that it is the test of the radio stage where it is recommended to verify the error test. Among the options provided, "Prueba de la Etapa del Modem" is the only one that relates to the testing of the modem stage, which is commonly used in radio communication systems.

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• 23.

### En el equipo terminal de radio es la indicación de alta tasa de error recibida:

• A.

BER

• B.

AIS

• C.

LOS

• D.

LOF

A. BER
Explanation
The correct answer is BER, which stands for Bit Error Rate. In a radio terminal equipment, the indication of a high error rate received is referred to as BER. This means that there is a high probability of errors occurring in the transmission of bits, indicating a poor quality of the received signal.

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• 24.

### Es el bloque de radioenlace que cambia la portadora de F.I. en señales de voltaje para obtener bits

• A.

Transmisor

• B.

Receptor

• C.

• D.

Explanation
A demodulator is a device that changes the carrier frequency of the intermediate frequency (IF) in voltage signals to obtain bits. In this context, the demodulator is responsible for extracting the original information from the modulated signal by reversing the modulation process. It converts the modulated signal back into its original form, allowing the receiver to interpret and decode the transmitted information.

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• 25.

### Es el bloque de radioenlace que consta de amplificadores regulados en su ganancia por el control automático de ganancia (A.G.C.)

• A.

Receptor

• B.

• C.

Emisor

• D.

Transmisor

A. Receptor
Explanation
The correct answer is "Receptor". In the given statement, it is mentioned that the radio link block consists of amplifiers regulated in their gain by automatic gain control (A.G.C.). The receptor is the device that receives the signal and demodulates it to extract the original information. Therefore, it makes sense that the receptor is the block of the radio link that consists of amplifiers regulated by A.G.C.

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• 26.

### Esta alarma es una indicación de señal de alarma en la unidad de tributaria recibida desde el equipo remoto en el canal k-l-m.

• A.

Tuy:n-k-l-m ERR

• B.

Tuy:n-k-l-m AIS

• C.

Tuy:n-k-l-m BER

• D.

Tuy:n-k-l-m LOS

B. Tuy:n-k-l-m AIS
Explanation
The given correct answer, Tuy:n-k-l-m AIS, suggests that the alarm is indicating an Alarm Indication Signal (AIS) in the tributary unit received from the remote equipment in the k-l-m channel. AIS is a signal used in telecommunications to indicate that there is a fault or failure in the transmission system.

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• 27.

### En un terminal óptico la señal eléctrica es monitoreada en la dirección de transmisión y cuando se detecta la perdida se envía hacia la línea óptica la señal de

• A.

LOS

• B.

BER

• C.

LOF

• D.

AIS

D. AIS
Explanation
In an optical terminal, the electrical signal is monitored in the transmission direction. When a loss is detected, the AIS (Alarm Indication Signal) is sent to the optical line. AIS is a signal used in telecommunications to indicate that there is a problem or loss of signal in the line.

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• 28.

### Es la información de byte B1, correspondiente al calculo de paridad con el método BIP-2 y servirá para hacer la comprobación correspondiente

• A.

BER-LOF

• B.

BER-LOF

• C.

BIP-Err

• D.

BIR-LOS

C. BIP-Err
Explanation
The given explanation states that the information of byte B1 is used for calculating parity with the BIP-2 method and will be used for the corresponding verification. Therefore, the correct answer is BIP-Err, which indicates that there is an error in the BIP calculation.

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• 29.

### En un indicador de error remoto el cual indica que el equipo remoto ha detectado algunos problemas en el afluente que recibe

• A.

AU3

• B.

AU4 RDI

• C.

AU4- CV

• D.

VC12

B. AU4 RDI
Explanation
The correct answer is AU4 RDI. In a remote error indicator (RDI), AU4 indicates that the remote equipment has detected some problems in the incoming signal. RDI is a signaling mechanism used in telecommunications to indicate errors or anomalies in the transmission. AU4 refers to a specific type of error or issue, and the RDI indicates that this error has been detected remotely.

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• 30.

### El BIT 11 “B11R” de PDH en estado 1 indica:

• A.

Perdida de Señal en el Orden Correspondiente en el extremo remoto

• B.

Perdida de señal en el orden de trama

• C.

Perdida de señal en el Bit 3

• D.

Perdida de Señal en la Transmision de Equipo

A. Perdida de Señal en el Orden Correspondiente en el extremo remoto
Explanation
The correct answer is "Perdida de Señal en el Orden Correspondiente en el extremo remoto". This means that the BIT 11 "B11R" in PDH indicates a loss of signal in the corresponding order at the remote end.

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• 31.

### Se considera la primer y mas importante tarea del técnico de mantenimiento

• A.

Dar soporte en todo momento

• B.

Solucionar el problema

• C.

Diagnostica el Fallo o averia

• D.

Mantenimento en los equipos

C. Diagnostica el Fallo o averia
Explanation
The correct answer is "Diagnostica el Fallo o averia" (Diagnose the fault or breakdown). This is considered the first and most important task of a maintenance technician as it involves identifying and analyzing the problem or malfunction in the equipment. By diagnosing the fault or breakdown, the technician can then proceed to find a solution and provide the necessary support to resolve the issue.

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• 32.

### Es el bloque de radioenlace donde se amplifica la R.F.

• A.

Transmisor

• B.

• C.

• D.

Receptor

A. Transmisor
Explanation
The correct answer is "Transmisor" because it is the device that amplifies the RF (radio frequency) signal in the radio link block. The transmitter is responsible for transmitting the modulated signal, which carries the information, to the receiver. The modulator and demodulator are components within the transmitter and receiver, respectively, that modulate and demodulate the RF signal. However, the primary function of amplifying the RF signal is performed by the transmitter.

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• 33.

### Esta alarma es un indicador  de errores excesivos con valor de E mayor o igual a 10 exp -3 en la tasa de transferencia de bits en la sección multiplexora

• A.

AIS

• B.

BER

• C.

MS EXC

• D.

RS LOF

C. MS EXC
Explanation
The correct answer is MS EXC. The given statement mentions that this alarm is an indicator of excessive errors with a value of E greater than or equal to 10 exp -3 in the bit transfer rate in the multiplexer section. MS EXC stands for "Multiplexer Section Excessive Errors", which aligns with the given explanation.

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• 34.

### El caso mas significativo de una señal que es enviada hacia adelante para informar de un problema severo en la recepción es la generación de

• A.

AIS

• B.

LOF

• C.

LOSS

• D.

ERR

A. AIS
Explanation
AIS stands for Automatic Identification System, which is a system used in maritime communication to exchange information between ships and shore stations. It is used to enhance safety and improve situational awareness on the water. In the context of the given question, AIS can be considered as the most significant signal sent forward to inform about a severe reception problem. AIS signals are used to transmit important information such as the ship's identity, position, course, and speed. If there is a severe reception problem, the AIS signal may not be received or may be distorted, indicating a potential issue with the communication or reception system.

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• 35.

### Esta alarma es un indicador de perdida de trama en la señal que esta entrante en la sección regeneradora

• A.

BER

• B.

LOF

• C.

AIS

• D.

RS LOF

D. RS LOF
Explanation
RS LOF stands for Remote Signal Loss of Frame. This alarm indicates that there is a loss of frame synchronization in the incoming signal in the regenerator section. This means that the regenerator is unable to properly interpret the frames in the signal, which can lead to errors in the transmission.

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• 36.

### Si en el PCM falla la señal de entrada de 2048 Kbps entonces se envía al extremo remoto la indicación de

• A.

B3T

• B.

BT3

• C.

T3B

• D.

3BT

A. B3T
Explanation
If the input signal of 2048 Kbps fails in the PCM, then the indication sent to the remote end is B3T.

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• 37.

### Es la acción a realizar cuando encuentras el LED de los convertidores de voltaje parpadeando en los equipos PDH

• A.

El sistema esta en sobre corriente y de cambiar equipos

• B.

Los Convertidores tienen Falla

• C.

Limpiar Alarmas por sobre voltaje

• D.

Remplaza los Convertidores de Voltaje

D. Remplaza los Convertidores de Voltaje
Explanation
The correct answer is "Remplaza los Convertidores de Voltaje." This means that the action to be taken when the voltage converter LED is blinking on PDH equipment is to replace the voltage converters. This suggests that the voltage converters are faulty and need to be replaced in order to resolve the issue.

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• 38.

### El PDH la indicación de alarma que se activa cuando desaparece el ritmo de temporización en la línea entrante de alto orden

• A.

BER Medicion de la tasa de Error

• B.

TRF Perdida de ls señal Entrante en una tributaria

• C.

NS Perdida de la Señal Entrante en Linea

• D.

Remplazo de tarjeta

C. NS Perdida de la Señal Entrante en Linea
Explanation
The correct answer is NS, which stands for "Perdida de la Señal Entrante en Linea" (Loss of Incoming Signal in Line). This option is the most appropriate explanation for the given statement, as it refers to the alarm indication that is activated when the timing rhythm disappears in the incoming high-order line. It suggests that there is a loss of signal in the line, indicating a potential issue or interruption in the communication.

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• 39.

### En un terminal óptico es la señal que indica la perdida de señal eléctrica en transmisión

• A.

IAS

• B.

LST

• C.

EXC

• D.

BER

B. LST
Explanation
In an optical terminal, LST stands for Loss of Signal Threshold. This refers to the signal level at which the loss of electrical signal during transmission is detected.

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• 40.

### En PCM indica que en el extremo remoto ha ocurrido perdida de señal de 2 Mb, error de alineamiento de trama, alta tasa de errores:

• A.

H3

• B.

BER

• C.

LOS

• D.

B3R

D. B3R
Explanation
The correct answer is B3R. B3R stands for Bit Error Rate. In this context, it indicates that at the remote end, there has been a loss of signal of 2 Mb, alignment frame error, and a high rate of errors. B3R is a measurement used to assess the quality of a digital transmission system by calculating the ratio of erroneous bits to the total number of bits transmitted.

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• 41.

### Esta alarma es un indicador de degradación de la señal con un valor que va de ε≥10-5  a  ε≥10-9 en la sección regeneradora

• A.

RS SD

• B.

SD-ES

• C.

RS - DS

• D.

TSW

A. RS SD
Explanation
The correct answer is RS SD. The given statement mentions that the alarm is an indicator of signal degradation with a value ranging from ε≥10-5 to ε≥10-9 in the regenerative section. Therefore, the RS SD option is the most suitable as it represents the potential degradation of the signal between the regenerator section and the SD section.

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• 42.

### Esta alarma puede ser visualizada dentro del AU4 en la sección multiplexora en bajo orden y el TU es terminal de flujo.

• A.

Tuy:n-t-l-m EXC

• B.

Tuy:n-k-l-m EXC

• C.

Tuy:n-t-l-m EXS

• D.

Tuy:n-k-l-m EXS

B. Tuy:n-k-l-m EXC
• 43.

### Dos casos típicos de información en el sistema SDH que se genera en el extremo remoto, son las señales

• A.

MS-REI y MS-RDI

• B.

ME-REI y ME-RDI

• C.

MA-RAI - MA-RDI

• D.

MI-REI y MI-RDA

A. MS-REI y MS-RDI
Explanation
The correct answer is MS-REI and MS-RDI. These are two types of signals that are generated in the remote end of the SDH system. MS-REI stands for Multiplex Section Remote Error Indication, which is a signal that indicates errors in the multiplex section of the SDH system. MS-RDI stands for Multiplex Section Remote Defect Indication, which is a signal that indicates defects in the multiplex section of the SDH system. These signals are important for monitoring and troubleshooting the SDH system.

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• 44.

### Son las funciones que tienen que ver con la adaptación o conversión de las señales durante las diferentes etapas del proceso

• A.

Funcion de Acoplamiento

• B.

• C.

Funcion de Transmision

• D.

Fuinciones Recepcion

B. Finciones de Adaptacion
Explanation
The correct answer is "Finciones de Adaptacion." This is because the given statement mentions that these functions are related to the adaptation or conversion of signals during different stages of the process. "Finciones de Adaptacion" translates to "Adaptation Functions" in English, which aligns with the explanation provided in the statement. These functions are responsible for adjusting or converting signals to ensure compatibility and smooth transmission between different stages of the process.

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• 45.

### Es la identificación del trayecto, contenida en el byte J0, la cual servirá para verificar la correspondencia entre la parte transmisora y receptora

• A.

RE-MIT

• B.

BER-AIS

• C.

RS-TIM

• D.

ERROR

C. RS-TIM
Explanation
The correct answer is RS-TIM. RS-TIM refers to the Remote Supervision-Tandem Interface Module, which is responsible for monitoring and controlling the transmission of data between the transmitting and receiving parts. It is used to ensure that the data is correctly transmitted and received by comparing the identification of the path contained in the J0 byte.

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• 46.

### Es la señal agregada a la banda base cuya finalidad es permitir que el receptor decodifique la señal agregada por el transmisor

• A.

Concatenacion de tramas

• B.

Sincronismo de Trama

• C.

Asincrono de Trama

• D.

Orden Extremo Remoto

B. Sincronismo de Trama
Explanation
The correct answer is "Sincronismo de Trama." This refers to the process of synchronizing the frames in a communication system. It ensures that the receiver can decode the aggregated signal sent by the transmitter by aligning the frames in the correct order and timing.

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• 47.

### Es la prueba de la etapa de radio enlace donde se recomienda verificar que el oscilador FI se encuentre en la frecuencia correcta

• A.

Modem

• B.

• C.

• D.

Mixto

A. Modem
Explanation
In the given statement, it is mentioned that it is a test for the radio link stage and it is recommended to verify that the FI oscillator is in the correct frequency. The correct answer, "Modem," is a device that modulates and demodulates signals, allowing for the transmission and reception of data over a communication line. In the context of the radio link stage, a modem would be used to establish a connection and ensure that the FI oscillator is operating at the correct frequency for effective communication.

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• 48.

### El bit 11R de PDH en estado 1 indica

• A.

Perdida de Señal en el Orden Correspondiente 1- Perdida de alineamiento de trama 2- Alta tasa de Error "ERR"

• B.

Perdida de Señal en el Orden Correspondiente 1- Perdida de datos 2- Alta tasa de Error "BER"

• C.

Perdida de Señal en el Orden Correspondiente 1- Perdida de datos 2- Alta tasa de Error "ERR"

• D.

Perdida de Señal en el Orden Correspondiente 1- Perdida de alineamiento de trama 2- Alta tasa de Error "BER"

D. Perdida de Señal en el Orden Correspondiente 1- Perdida de alineamiento de trama 2- Alta tasa de Error "BER"
Explanation
The correct answer is "Perdida de Señal en el Orden Correspondiente, 1- Perdida de alineamiento de trama, 2- Alta tasa de Error 'BER'". This means that when the 11R bit of PDH is in state 1, it indicates a loss of signal in the corresponding order, along with a loss of frame alignment and a high error rate measured as bit error rate (BER).

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• 49.

### El segundo o tercer orden PDH su funcion es avisar que hay perdida de alimentacion de trama o alta tasa de errores

• A.

B11T

• B.

B13T

• C.

B3R

• D.

B12T

A. B11T
Explanation
The correct answer is B11T. The B11T is a second or third-order PDH (Plesiochronous Digital Hierarchy) signal. Its function is to notify when there is a loss of frame synchronization or a high error rate.

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• 50.

### En el cuarto orden cuando se recibe esta señal no se realiza ninguna acción consiguiente, pero es un aviso de problemas en el extremo remoto:

• A.

B11T

• B.

B13R

• C.

B13T

• D.

B11R

B. B13R
Explanation
This answer suggests that when the signal B13R is received in the fourth order, no further action is taken. However, it serves as a warning of problems at the remote end.

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• Current Version
• Mar 20, 2023
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• Aug 22, 2019
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