Jerarquia Digital Sincrona (Sdh)

Reviewed by Editorial Team
The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Learn about Our Editorial Process
| By Estebandido
E
Estebandido
Community Contributor
Quizzes Created: 8 | Total Attempts: 7,881
| Attempts: 1,058
SettingsSettings
Please wait...
  • 1/109 Questions

    Si un elemento de red SDH pierde su sincronizacion y utiliza una señal de reloj generada internamente se dice que esta en modo 

    • De Libre Carrera
    • Sujeto a sincronizacion
    • Atraves de sistema
    • Codificacion 
Please wait...
About This Quiz

Jerarquia Digital Sincrona (SDH)

Jerarquia Digital Sincrona (Sdh) - Quiz

Quiz Preview

  • 2. 

    En este modo de sincronizacion existe mas de un PRC o reloj de refgerencia primaria

    • Pseudo-Sincrono

    • Sincrono

    • Pseudo

    • Reloj Atomico

    Correct Answer
    A. Pseudo-Sincrono
    Explanation
    In this synchronization mode, there are multiple Primary Reference Clocks (PRCs) or primary reference clocks. This means that there are multiple clocks that serve as the main reference for synchronization. The term "pseudo" suggests that these clocks may not be truly synchronized, but rather appear to be synchronized due to certain mechanisms or protocols in place. Therefore, the synchronization in this mode is not completely accurate or precise, hence the term "pseudo-synchronous."

    Rate this question:

  • 3. 

    Es una caracteristica de los sistemas SDH

    • Permite insertar y extraer canales sin de multiplexar toda la señal

    • Separar y extrar las señales

    • Empaquetar y enviar gran cantidad de informacion

    • Solo transportar informacion de una cantidad de datos

    Correct Answer
    A. Permite insertar y extraer canales sin de multiplexar toda la señal
    Explanation
    The correct answer is "Permite insertar y extraer canales sin de multiplexar toda la señal" which translates to "Allows inserting and extracting channels without multiplexing the entire signal." This means that in SDH systems, individual channels can be added or removed without affecting the entire signal, providing flexibility and scalability in managing the transmission of different data streams.

    Rate this question:

  • 4. 

    La indicacion de apuntador nulo se abrevia como 

    • NPI

    • IAN

    • CMI

    • LLP

    Correct Answer
    A. NPI
    Explanation
    The correct answer is NPI, which stands for "Null Pointer Indication." This abbreviation is commonly used in computer programming to refer to the situation when a pointer variable does not point to any valid memory address. When a null pointer is encountered during program execution, it often indicates an error or a bug in the code. Therefore, NPI is the appropriate abbreviation for this concept.

    Rate this question:

  • 5. 

    El significado de las letras PDH es

    • Jerrarquia Digital Plesiocrona

    • Jerarquia Diginal Sincrona

    • Pulso Digital Alto

    • Pulso Digital H3

    Correct Answer
    A. Jerrarquia Digital Plesiocrona
    Explanation
    The correct answer is "Jerrarquia Digital Plesiocrona." This answer refers to the meaning of the acronym "PDH" in Spanish, which stands for "Jerarquia Digital Plesiocrona." The other options provided are not the correct translations or interpretations of the acronym.

    Rate this question:

  • 6. 

    La trayectoria de alto orden de punta a punta se representa con las letras

    • HLP

    • LLP

    • CMI

    • RSOH

    Correct Answer
    A. HLP
    Explanation
    The correct answer is HLP because in the given sequence, the letters are arranged in ascending order of their position in the alphabet. H is the eighth letter, L is the twelfth letter, and P is the sixteenth letter. Therefore, HLP represents the trajectory of high order from point to point.

    Rate this question:

  • 7. 

    Una de las funciones de un apuntador es 

    • Señalar la posicion de inicio de los VC's

    • Indicar el siguiente contendor Virtual

    • Marca es siste me multiplexacion

    • Da la Señal al estado de alarma

    Correct Answer
    A. Señalar la posicion de inicio de los VC's
    Explanation
    An apuntador, or pointer, is used to indicate the position of the start of the VC's (Virtual Containers). It helps in keeping track of the location where the VC's begin, allowing for efficient access and management of the virtual containers.

    Rate this question:

  • 8. 

    Todos los elementos de una red SDH utilizan como referencia solo un reloj, que LD la identifica como

    • 03N01S

    • 30N01S

    • 30N01T

    • 300N1S

    Correct Answer
    A. 30N01S
    Explanation
    The correct answer is 30N01S. In a SDH network, all elements use a single clock reference. The code "30N01S" is used to identify the network element as a SDH node.

    Rate this question:

  • 9. 

    Las siglas RSOH corresponden a

    • Encabezado de sección de apuntador

    • Ninguno de los anteriores

    • Encabezado de sección de regeneradores 

    • Encabezado de sección multiplex

    Correct Answer
    A. Encabezado de sección de regeneradores 
    Explanation
    The correct answer is "Encabezado de sección de regeneradores". This means that the acronym RSOH corresponds to the "Header of regenerator section".

    Rate this question:

  • 10. 

    Las Siglas MSOH corresponden a

    • Encabezado de seccion multiplex

    • Encabezado de seccion de administracion

    • Encabezado de sincronizacion

    • Encabezado de seccion multiplicadora

    Correct Answer
    A. Encabezado de seccion multiplex
    Explanation
    The correct answer is "Encabezado de seccion multiplex." Las Siglas MSOH corresponden a "Encabezado de seccion multiplex." This means that MSOH stands for Multiplex Section Header in Spanish.

    Rate this question:

  • 11. 

    El encabezado de seccion del STM-1 esta formado por 

    • SOH y MSO

    • RSOH Y CMI

    • MSOH Y CMI

    • RSOH y MSOH

    Correct Answer
    A. RSOH y MSOH
    Explanation
    The correct answer is RSOH y MSOH. The section overhead (RSOH) and the multiplex section overhead (MSOH) are the components of the STM-1 section header. The RSOH contains information related to the maintenance and performance monitoring of the section, while the MSOH contains information about the multiplexing and demultiplexing of the signals within the section. These headers are essential for the proper functioning and management of the STM-1 transmission.

    Rate this question:

  • 12. 

    Especifica la forma de como se van a llenar las estructuras de SDH con las señales que se transportan 

    • El Mapeo 

    • H3

    • Contenedor Virtual

    • RSOH

    Correct Answer
    A. El Mapeo 
    Explanation
    The correct answer is "El Mapeo". This answer suggests that the way to fill the SDH structures with the signals being transported is through a process called "El Mapeo" or mapping. This process involves assigning the signals to specific slots or containers within the SDH structure, ensuring efficient and organized transmission of the signals.

    Rate this question:

  • 13. 

    Funcion por la cual la red monitorea la calidad de transmision en la seccones en operacion y si esta se degrada el trafico pude ser conmutado hacia la seccion de proteccion

    • Conmutacion de Proteccion automatica

    • Mediciones en la red de alambrado

    • Atraves de equipos de medicion

    • Proteccion en los equipos

    Correct Answer
    A. Conmutacion de Proteccion automatica
    Explanation
    This answer is correct because it accurately identifies "Conmutacion de Proteccion automatica" as the function by which the network monitors the transmission quality in the operating sections, and if it degrades, the traffic can be switched to the protection section. The other options mentioned, such as "Mediciones en la red de alambrado" (Measurements in the wired network) and "Proteccion en los equipos" (Protection in the equipment), are not directly related to the given function described in the question.

    Rate this question:

  • 14. 

    Cuando la velocidad de trama del VC-4 es baja con respecto a la AUG, se requiere

    • Justificacion Negativa

    • Pseudo- Sincrono

    • Justificacion Positiva

    • Justificacion Positiva y Negativa

    Correct Answer
    A. Justificacion Positiva
    Explanation
    When the frame rate of the VC-4 is low compared to the AUG, a positive justification is required. This means that additional bits need to be added to the data stream in order to align the frames correctly. This is necessary to ensure proper synchronization and to avoid errors in the transmission of data.

    Rate this question:

  • 15. 

    La trayecoria de bajo orden de punta a punta se representa con las letras 

    • HLP

    • RSOH

    • LLP

    • CMI

    Correct Answer
    A. LLP
    Explanation
    The given answer, "LLP," represents the low order trajectory from end to end.

    Rate this question:

  • 16. 

    Es la forma en que los sistemas PDH se pueden conectar a un sistema SDH

    • Solamente se pueden conectar sistemas PDH con normas americanas

    • No se puede conectar sistemas PDH

    • Se pueden mezclar los sistemas PDH con norma europea o americana

    • Solamente se pueden conectar sistemas PDH con norma europea

    Correct Answer
    A. Se pueden mezclar los sistemas PDH con norma europea o americana
    Explanation
    The correct answer states that PDH systems can be mixed with either European or American standards. This means that PDH systems can be connected to SDH systems regardless of whether they follow European or American standards. This flexibility allows for greater compatibility and interoperability between different types of systems.

    Rate this question:

  • 17. 

    Todos los elementos de una red SDH utilizan como referencia solo un reloj, que LD la identifica como

    • 03N01S

    • 30N01S

    • Option 3

    • Option 4

    Correct Answer
    A. 30N01S
    Explanation
    The correct answer is 30N01S. In a SDH network, all elements use a single clock reference, which is identified as 30N01S.

    Rate this question:

  • 18. 

    Diga que significan las letras STM-n

    • Modulo de Transporte Asincrono de orden n

    • Modulo de Transporte Sincrono de orden n

    • Modulo de Tranmision Multiples de numeracion

    • Sistema de Tranmision  y multiplexacion orden n

    Correct Answer
    A. Modulo de Transporte Sincrono de orden n
    Explanation
    Las letras STM-n significan "Modulo de Transporte Sincrono de orden n". Esto se refiere a un estándar utilizado en telecomunicaciones para la transmisión de señales digitales a través de redes de fibra óptica. El término "sincrónico" indica que la transmisión se realiza de manera sincronizada, lo que garantiza una mayor precisión y confiabilidad en la transmisión de datos. El valor "n" en STM-n representa el nivel de capacidad de transmisión, donde diferentes valores de "n" indican diferentes velocidades de transmisión.

    Rate this question:

  • 19. 

    Es el apuntador que indica el comienzo del VC-4

    • VC-12

    • AU-4

    • C-12

    • VC-3

    Correct Answer
    A. AU-4
    Explanation
    AU-4 is the correct answer because it is the pointer that indicates the beginning of the VC-4. The other options, VC-12, C-12, and VC-3, are not the correct pointers for indicating the start of the VC-4.

    Rate this question:

  • 20. 

    Las velocidades de transmision de la SDH son

    • 622.080,  2488.320, 8 y 34 Mb/s

    • 155.520, 622.080 y 2488.320 Mb/s

    • 2, 8, 34, 140 y 565 Mb/s

    • 8, 34, 155.520, 622.080 Mb/s

    Correct Answer
    A. 155.520, 622.080 y 2488.320 Mb/s
    Explanation
    The correct answer is 155.520, 622.080, and 2488.320 Mb/s. This is because these are the transmission speeds of the SDH (Synchronous Digital Hierarchy) system. SDH is a standard for transmitting digital signals over optical fiber networks, and these speeds represent different levels of transmission capacity.

    Rate this question:

  • 21. 

    Que es ATM

    • Es una tecnica de multiplexacion y conmutacion de paquetes

    • Es un proceso de automatizacion

    • Es un proceso de sistema automatico

    • Es un sistema de conmutacion y transmision

    Correct Answer
    A. Es una tecnica de multiplexacion y conmutacion de paquetes
    Explanation
    ATM significa Asynchronous Transfer Mode, y se refiere a una tecnología de red que utiliza la multiplexación y conmutación de paquetes para transmitir datos de manera eficiente. En lugar de enviar información en forma continua, ATM divide los datos en pequeños paquetes y los envía de manera independiente a través de la red. Esto permite que múltiples flujos de datos compartan el mismo medio de transmisión y optimiza el uso de ancho de banda. Por lo tanto, la afirmación "Es una técnica de multiplexación y conmutación de paquetes" es la correcta.

    Rate this question:

  • 22. 

    El control centralizados de la red SDH se logra a través

    • Un terminal óptico

    • Las señales PDH

    • Los canales de administración de la señal SDH 

    • El puerto paralelo de una PC notebook

    Correct Answer
    A. Los canales de administración de la señal SDH 
    Explanation
    The correct answer is "Los canales de administración de la señal SDH". Centralized control of the SDH network is achieved through the use of management channels within the SDH signal. These channels allow for the monitoring, configuration, and management of the network elements and services within the SDH network.

    Rate this question:

  • 23. 

    Es el nombre del contenedor donde se coloca la señal de entrada de 2048 kbps

    • C-12

    • AU-4

    • VC-3

    • H3

    Correct Answer
    A. C-12
    Explanation
    C-12 is the correct answer because it refers to the container where the 2048 kbps input signal is placed. The other options, AU-4, VC-3, and H3, do not specifically mention the container for this specific signal.

    Rate this question:

  • 24. 

    Es la velocidad de transmision del STM-64

    • 155.520 Mb/s

    • 622.080 Mb/s

    • 2488.320 Mb/s

    • 9953.280 Mb/s

    Correct Answer
    A. 9953.280 Mb/s
    Explanation
    The correct answer is 9953.280 Mb/s because it is the highest value among the given options. The question is asking for the transmission speed of STM-64, and the options are listed in increasing order. Since the transmission speed of STM-64 is higher than the other options, 9953.280 Mb/s is the correct answer.

    Rate this question:

  • 25. 

    Las velocidades en PDH de la jerraquia europea son 

    • 155.520, 622.080 y 2488.320 Mb/s

    • 2, 8, 34, 140 y 565 Mb/s

    • 5Mb/s

    • 10M b/s

    Correct Answer
    A. 2, 8, 34, 140 y 565 Mb/s
    Explanation
    The correct answer is the second option, which includes the speeds of 2, 8, 34, 140, and 565 Mb/s. This is because the question is asking for the speeds in the European PDH hierarchy, and these are the correct speeds in that hierarchy.

    Rate this question:

  • 26. 

    Diga cuando se tiene una condición de fuera de trama

    • Falla de recepción en el extremo remoto. Esto se señaliza colocando los tres bits menos significativos del byte K2 del encabezado de la sección de múltiplex al valor binario de 110

    • Cuando ocurre un lapso de más de 625microsegundos sin que se detecten las ´palabras correctas de trama, se considera una condición de fuera de trama (OOF), si persiste esta condición, se considera una alarma LOF

    • Señal de indicación de alarma. Se señaliza poniendo los bytes del apuntador y todo el contenido completo del contenedor a unos

    • Todo los anteriore

    Correct Answer
    A. Cuando ocurre un lapso de más de 625microsegundos sin que se detecten las ´palabras correctas de trama, se considera una condición de fuera de trama (OOF), si persiste esta condición, se considera una alarma LOF
    Explanation
    When there is a lapse of more than 625 microseconds without detecting the correct frame words, it is considered an out-of-frame (OOF) condition. If this condition persists, it is considered a LOF alarm. This is the correct answer because it accurately describes the condition of being out of frame and the subsequent alarm that is triggered if the condition persists.

    Rate this question:

  • 27. 

    Los límites de trayecto de bajo orden son

    • De los ensambladores de bajo orden a los ensambladores de bajo orden

    • De los regeneradores de extremos a los ensambladores de alto orden

    • De los ensambladores de alto orden a los multiplexores STM-n

    • Todo los anterirores

    Correct Answer
    A. De los ensambladores de bajo orden a los ensambladores de bajo orden
  • 28. 

    El total de Bytes de la palabra de alineacion de trama de un STM-1 es de 

    • 6

    • 9

    • 8

    • 4

    Correct Answer
    A. 6
    Explanation
    The total number of bytes for the frame alignment word of an STM-1 is 6.

    Rate this question:

  • 29. 

    Son los bytes que llevan la informacion de peticion de conmutacion y estado actual del enlace 

    • H3 y B1

    • K1 y K2

    • J1 y J2

    • B1 y B2

    Correct Answer
    A. K1 y K2
    Explanation
    The correct answer is K1 and K2. K1 and K2 are the bytes that carry the information of switching request and the current state of the link.

    Rate this question:

  • 30. 

    Una de las funciones de un apuntador es

    • Identificar la trayectoria de VC

    • Agregar bits de justificación

    • Indicar el resultado del cálculo de paridad

    • Señalar la posición de inicio de los VC`s

    Correct Answer
    A. Señalar la posición de inicio de los VC`s
    Explanation
    El apuntador se utiliza para señalar la posición de inicio de los VC's. Esto significa que indica el punto de partida de los valores de control en una secuencia de datos. El apuntador es importante para asegurar que los datos se lean o escriban correctamente en la memoria, ya que indica dónde comienza la información relevante.

    Rate this question:

  • 31. 

    La señal STM-1 se puede ver como una trama de 

    • 9 filas y 84 columnas en cada fila

    • 9 filas y 86 columnas en cada fila

    • 9 filas y 270 columnas en cada fila 

    • 9 filas y 261 columnas en cada fila

    Correct Answer
    A. 9 filas y 270 columnas en cada fila 
    Explanation
    The correct answer is 9 filas y 270 columnas en cada fila. The STM-1 signal is a frame with 9 rows and 270 columns in each row.

    Rate this question:

  • 32. 

    Si el sistema  se usa para señales de 2 Mb/s, cada TUG-2 llevara

    • Tres TU-12 

    • Un TU-12

    • Dos TU-12

    • Cuatro TU-12

    Correct Answer
    A. Tres TU-12 
    Explanation
    If the system is used for 2 Mb/s signals, each TUG-2 will carry three TU-12 signals. This means that three TU-12 signals can be transmitted simultaneously through one TUG-2 in the system.

    Rate this question:

  • 33. 

    En caso de que exista un offset de frecuencia entre las velocidades de transmisión del AUG y del  VC-4 el equipo efectúa una

    • Justificación positiva o negativa

    • Justificación negativa o nula

    • No hay justificación

    • Justificación positiva o nula

    Correct Answer
    A. Justificación positiva o negativa
    Explanation
    If there is a frequency offset between the transmission speeds of the AUG and the VC-4, the equipment will perform a positive or negative justification.

    Rate this question:

  • 34. 

    Como esta compuesta la palabra de alineamiento de trama?

    • Tres bytes A1 y Tres bytes A2

    • 5 filas por 8 bytes en cada fila

    • 9 Filas y 270 Columnas en cada fila

    • Tres bytes B1 y Tres bytes A2

    Correct Answer
    A. Tres bytes A1 y Tres bytes A2
    Explanation
    La palabra de alineamiento de trama está compuesta por tres bytes A1 y tres bytes A2.

    Rate this question:

  • 35. 

    El enrutador digital sincrono es conocido como 

    • RSOH

    • SDXC

    • DCC-R

    • MSOH

    Correct Answer
    A. SDXC
    Explanation
    The correct answer is SDXC. The explanation for this is that SDXC stands for Secure Digital eXtended Capacity, which is a type of memory card used in digital devices such as cameras and smartphones. SDXC cards have a higher storage capacity compared to other types of SD cards, making them suitable for storing large amounts of data. The other options (RSOH, DCC-R, and MSOH) are not commonly used terms in relation to digital routers, so they are not the correct answer.

    Rate this question:

  • 36. 

    Son algunas de las Recomendaciones que define la SDH

    • G.811, G.810, G.809

    • G.812, G.501, G.606

    • G.707, G.708, G.709

    • G.512, G.606, G.502

    Correct Answer
    A. G.707, G.708, G.709
    Explanation
    These are some of the recommendations defined by the SDH (Synchronous Digital Hierarchy). The recommendations G.707, G.708, and G.709 are specific guidelines and standards set by the SDH for synchronous digital transmission systems. These recommendations outline the specifications for the physical and electrical characteristics of the network, as well as the protocols and interfaces used for efficient and reliable transmission of digital signals.

    Rate this question:

  • 37. 

    Es el recipiente donde se colocan las señales de informacion de entrada segun la estructura de SDH

    • Contenedor

    • Contenedor Virtual

    • En la longitud de Onda

    • Modulo de transporte

    Correct Answer
    A. Contenedor
    Explanation
    The correct answer is "Contenedor." In the context of the given question, a "contenedor" refers to a container where input information signals are placed according to the structure of SDH (Synchronous Digital Hierarchy). This container is used to transport and manage the signals within the SDH network.

    Rate this question:

  • 38. 

    Es la velocidad de transmision del STM-4

    • 155.520 Mb/s

    • 622.080 Mb/s

    • 2488.320 Mb/s

    • 9953.280 Mb/s

    Correct Answer
    A. 622.080 Mb/s
    Explanation
    The correct answer is 622.080 Mb/s. This is the transmission speed of the STM-4, which is a standard for synchronous digital hierarchy (SDH) transmission systems. The STM-4 has a transmission rate of 622.080 Mb/s, which is four times the rate of the STM-1 (155.520 Mb/s). The other options provided are not the correct transmission speeds for the STM-4.

    Rate this question:

  • 39. 

    Una señal PDH de 140 Mb/s se mapea directamente a un 

    • C-3

    • VC-4

    • TU-12

    • VC-3

    Correct Answer
    A. VC-4
    Explanation
    A PDH signal of 140 Mb/s is directly mapped to a VC-4.

    Rate this question:

  • 40. 

    En la estructura de trama STM-1 la sección de encabezados SOH=RSOH+MSOH se encuentra en los

    • Primeros 9 bits de cada fila

    • Primeros 9 bytes de cada fila

    • 26 Bytes por fila

    • C-4Option 4

    Correct Answer
    A. Primeros 9 bytes de cada fila
    Explanation
    In the STM-1 frame structure, the section of headers SOH=RSOH+MSOH is located in the first 9 bytes of each row.

    Rate this question:

  • 41. 

    En este modo de sincronización existe más de un PRC o reloj de referencia primaria:

    • Síncrono

    • Asíncrono

    •  Pseudosíncrono

    • Plesiocrono

    Correct Answer
    A.  Pseudosíncrono
    Explanation
    In this synchronization mode, there is more than one primary reference clock (PRC) or primary reference clock. The term "pseudosynchronous" refers to a system that appears to be synchronous but is not truly synchronized. In this context, it means that there are multiple PRCs or primary reference clocks, which can lead to a pseudo-synchronized state.

    Rate this question:

  • 42. 

    El equivalente de STM-1 para SONET (EE.UU) es el

    • STS9

    • STS3

    • STS48

    • STS12

    Correct Answer
    A. STS3
    Explanation
    The correct answer is STS3. In SONET (Synchronous Optical Networking), the equivalent of STM-1 (Synchronous Transport Module level 1) is STS3 (Synchronous Transport Signal level 3). SONET is a standard for optical telecommunications transport that is used in the United States, while STM-1 is a similar standard used in Europe. STS3 is the American equivalent of STM-1 and represents a synchronous transport signal at a rate of 155.52 Mbps (megabits per second).

    Rate this question:

  • 43. 

    El byte de oportunidad para justificacion negativa es?

    • B1

    • A1

    • H3

    • C-12

    Correct Answer
    A. H3
    Explanation
    The correct answer is H3. In networking, a "byte of opportunity" refers to the maximum amount of data that can be transmitted in a single network packet. Justification negativa is a concept in networking where a device sends a negative acknowledgment to indicate that it did not receive a particular packet. H3 represents a specific value for the byte of opportunity for justification negativa, indicating that the maximum amount of data that can be transmitted in a single packet for this purpose is 3 bytes.

    Rate this question:

  • 44. 

    En una configuración de anillo, cada multiplexor síncrono tiene las siguientes conexiones

    • Los anillos MUX y AUX

    • Los lados este y oeste estan conectado cada uno a un correspondiete nodo adyacente

    • Los lados oeste y este estan conectados cada uno a un correspondiente nodo aydacente

    • Los anillos de MUX en PDH

    Correct Answer
    A. Los lados este y oeste estan conectado cada uno a un correspondiete nodo adyacente
    Explanation
    In a ring configuration, each synchronous multiplexer is connected to the MUX and AUX rings. The east and west sides are connected to their respective adjacent nodes. This connection allows for the transmission of data between the nodes in the ring.

    Rate this question:

  • 45. 

    Recomendacion el CCITT que define al reloj de referencia primaria

    • G.811

    • G.909

    • G.812

    • G.701

    Correct Answer
    A. G.811
    Explanation
    The correct answer is G.811. The CCITT (International Telegraph and Telephone Consultative Committee) recommends G.811 as the standard for defining the primary reference clock. This standard specifies the requirements for a primary reference clock in telecommunications networks, including its accuracy, stability, and traceability. It ensures that the primary reference clock provides a reliable and accurate time signal for synchronization purposes in the network.

    Rate this question:

  • 46. 

    La Interface HDSL tiene codigo de linea

    • 2C1Q

    • 2B2Q

    • 2B1Q

    • 1D2Q

    Correct Answer
    A. 2B1Q
    Explanation
    The correct answer is 2B1Q. This is because the HDSL interface uses the 2B1Q line coding scheme. 2B1Q stands for 2 binary bits to 1 quaternary symbol, which means that two binary bits are encoded into one quaternary symbol. This coding scheme allows for efficient transmission of digital signals over a single twisted pair of copper wires.

    Rate this question:

  • 47. 

    El total de bytes  de la palabra alineación de trama de un STM-1 es

    • 9

    • 12

    • 6

    • 3

    Correct Answer
    A. 6
    Explanation
    The total number of bytes in the frame alignment word of an STM-1 is 6.

    Rate this question:

  • 48. 

    El número del STM-1 en un STM-n lo identificamos por medio del byte

    • C1

    • A2

    • F2

    • Z2

    Correct Answer
    A. C1
    Explanation
    In an STM-n, the number of the STM-1 is identified by the byte C1.

    Rate this question:

  • 49. 

    El encabezado de seccion para multiplex ocupa

    • 5 filas por 9 bytes en cada filas

    • 9 filas por 5 bytes en cada filas

    • 8 filas por 9 bytes en cada filas

    • 8 filas por 5bytes en cada filas

    Correct Answer
    A. 5 filas por 9 bytes en cada filas
    Explanation
    The correct answer is 5 filas por 9 bytes en cada filas. This means that the section header for multiplex occupies 5 rows and each row contains 9 bytes. This information is important for understanding the layout and structure of the multiplex section.

    Rate this question:

Quiz Review Timeline (Updated): Mar 21, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 13, 2019
    Quiz Created by
    Estebandido
Back to Top Back to top
Advertisement