Sdh (Especial) By Cronos71
- 1.
Canal de 192 kbps para comunicación de datos es de
- A.
DCC-R
- B.
MI
- C.
FI
- D.
DCC-M
Correct Answer
A. DCC-RExplanation
A canal de 192 kbps para comunicación de datos es de DCC-R.Rate this question:
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- 2.
Recomendación del CCITT que defínela reloj de referencia primaria
- A.
G.811
- B.
G.821
- C.
G.812
- D.
G.703
Correct Answer
A. G.811Explanation
G.811 is the correct answer because it is a recommendation from the CCITT (now known as ITU-T) that defines the primary reference clock. The primary reference clock is a highly accurate clock used as a reference for synchronizing other clocks in a network. G.821 is a recommendation for error performance parameters and objectives for international, constant bit rate digital paths. G.812 is a recommendation for the synchronization interface standards for equipment that is connected to digital networks. G.703 is a recommendation for the physical layer characteristics of digital transmission systems.Rate this question:
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- 3.
En una configuración de anillo, cada multiplexor sincrono tiene las siguientes conexiones
- A.
Los lados este y oeste estás conectados cada uno a un correspondiente nodo adyacente
- B.
Loa lados Este y Oeste estan conectados ambos al mismo lado
- C.
El Lado Oeste esta conectado a ambos nodos y el lado Este queda libre
- D.
Los lados Este y Oeste no tienen conexion alguna
Correct Answer
A. Los lados este y oeste estás conectados cada uno a un correspondiente nodo adyacenteExplanation
The correct answer is that the east and west sides are connected to their respective adjacent nodes. This means that each side of the synchronous multiplexer is connected to a neighboring node.Rate this question:
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- 4.
Una de las funciones del apuntador es
- A.
Señalar la posición de inicio de los VC’s
- B.
Identificar la trayectoria de los VC's
- C.
Agregar Bits de Justificacion
- D.
Indicar el resultado del calculo del Bit de paridad
Correct Answer
A. Señalar la posición de inicio de los VC’sExplanation
El apuntador se utiliza para señalar la posición de inicio de los VC's. Esto significa que indica el punto de partida de los Virtual Circuits (VC's) en un sistema de comunicación. El apuntador es esencial para establecer y mantener la conexión entre los dispositivos de origen y destino, ya que permite identificar dónde comienza la transmisión de datos en el VC. Sin el apuntador, no sería posible establecer una comunicación adecuada entre los dispositivos.Rate this question:
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- 5.
En este modo de sincronización existe más de un PRC o reloj de referencia primaria
- A.
Pseudo-síncrono
- B.
Plesincrono
- C.
Sincrono
- D.
Asincrono
Correct Answer
A. Pseudo-síncronoExplanation
In this synchronization mode, there are multiple primary reference clocks (PRCs) or primary reference time sources. This means that there are multiple sources of time that can be used as references for synchronization. The term "pseudo" suggests that although there are multiple sources, they may not be truly synchronized or accurate. Therefore, the system may appear to be synchronized, but it is not truly synchronous.Rate this question:
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- 6.
El encabezado de sección para el multiplex ocupa:
- A.
5 filas por 9 bytes en cada fila
- B.
8 filas por 9 bytes cada una
- C.
6 filas por 9 bytes cada una
- D.
3 filas por 9 bytes cada una
Correct Answer
A. 5 filas por 9 bytes en cada filaExplanation
El encabezado de sección para el multiplex ocupa 5 filas por 9 bytes en cada fila.Rate this question:
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- 7.
Es un ejemplo de contenedor de más alto orden
- A.
C-4
- B.
TU-12
- C.
AU-4
- D.
C-11
Correct Answer
A. C-4Explanation
The given answer, C-4, is correct because it matches the pattern of the other options. The pattern appears to be a letter followed by a number, with the number increasing by 1 each time. Therefore, C-4 is the next logical option in the sequence.Rate this question:
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- 8.
La velocidad de transmisión para un SDH STM-64 es de
- A.
9953,280 Mb/s
- B.
9953,280 Kb/s
- C.
9953280 Mb/s
- D.
99532,80 Kb/s
Correct Answer
A. 9953,280 Mb/sExplanation
The correct answer is 9953,280 Mb/s. This is the correct transmission speed for an SDH STM-64. SDH stands for Synchronous Digital Hierarchy, and STM-64 is a specific level within this hierarchy. It has a transmission capacity of 9953,280 Megabits per second (Mb/s).Rate this question:
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- 9.
Un señal PDH de 140 Mbits/s se mapea directamente a un: C4.
- A.
VC-4
- B.
VC-2
- C.
VC-11
- D.
VC-12
Correct Answer
A. VC-4Explanation
The correct answer is VC-4. In PDH (Plesiochronous Digital Hierarchy) systems, a signal with a rate of 140 Mbits/s can be directly mapped to a VC-4 (Virtual Container-4). VC-4 is a synchronous payload envelope that can carry multiple lower-rate signals, such as VC-3, VC-12, or VC-11. It is commonly used in SDH (Synchronous Digital Hierarchy) networks for multiplexing and transporting different traffic streams.Rate this question:
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- 10.
El byte de oportunidad para la justificación negativa es
- A.
H3
- B.
B2
- C.
D3
- D.
Z1
Correct Answer
A. H3Explanation
The correct answer is H3. The phrase "byte de oportunidad para la justificación negativa" is in Spanish and translates to "opportunity byte for negative justification." In computer science, a "byte" refers to a unit of digital information. In this context, "byte de oportunidad" suggests that there is a specific byte or piece of information that can be used to justify a negative outcome or decision. Therefore, H3 is the correct answer as it represents the specific byte that holds this opportunity for negative justification.Rate this question:
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- 11.
El total de bytes de la palabra de alineamiento de trama de un STM-1
- A.
6
- B.
3
- C.
12
- D.
9
Correct Answer
A. 6Explanation
The correct answer is 6. The STM-1 frame alignment word consists of 6 bytes.Rate this question:
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- 12.
Es la velocidad transmission del STM-4
- A.
622.080 Mb/s
- B.
622080 Mb/s
- C.
622.080 Kb/s
- D.
6220.80 Kb/s
Correct Answer
A. 622.080 Mb/sExplanation
The correct answer is 622.080 Mb/s. This is because the question is asking for the transmission speed of the STM-4, which is a specific type of digital transmission system used in telecommunications. The unit of measurement for data transmission speed is typically expressed in bits per second (bps), and in this case, it is given in megabits per second (Mb/s). Therefore, the correct answer is 622.080 Mb/s.Rate this question:
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- 13.
Son los Bytes que llevan la informacion de peticion de conmutacion y estado actual del enlace:
- A.
K1 y K2
- B.
A1 y A2
- C.
B1 y B2
- D.
D1 y D3
Correct Answer
A. K1 y K2Explanation
K1 y K2 son los Bytes que llevan la información de petición de conmutación y estado actual del enlace.Rate this question:
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- 14.
Si un elemento de Red SDH pierde su sincronización y utiliza un reloj interno, está en modo:
- A.
De Libre Carrera
- B.
Esclavo
- C.
Amarrado
- D.
Maestro esclavo
Correct Answer
A. De Libre CarreraExplanation
Cuando un elemento de Red SDH pierde su sincronización y utiliza un reloj interno, está en modo "De Libre Carrera". Esto significa que el elemento está funcionando de manera independiente y no está sincronizado con ningún otro elemento de la red. En este modo, el elemento utiliza su propio reloj interno para mantener su sincronización y operar de manera autónoma.Rate this question:
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- 15.
El Significado de PDH
- A.
Jerarquía Digital Plesiócrona
- B.
Pulsos Digitales de Alta Velocidad
- C.
Parte Digital de Alto Orden
- D.
Jerarquia Digital Sincrona
Correct Answer
A. Jerarquía Digital PlesiócronaExplanation
The correct answer is "Jerarquía Digital Plesiócrona". The term PDH stands for "Plesiochronous Digital Hierarchy", which refers to a digital transmission technology used in telecommunications networks. Plesiochronous means that the timing of the signals is slightly different, but still within an acceptable range. The PDH system is used to multiplex and transmit multiple voice and data channels over a single physical link, allowing for efficient and cost-effective communication.Rate this question:
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- 16.
La indicación del apuntador nulo se abrevia como:
- A.
NPI
- B.
AN
- C.
NNIC
- D.
TUG
Correct Answer
A. NPIExplanation
The correct answer is NPI. NPI stands for "Null Pointer Indication," which is a term used in computer programming to refer to the indication of a null pointer. A null pointer is a pointer that does not point to any memory location. In programming, it is important to handle null pointers properly to avoid errors and crashes. Therefore, NPI is the correct abbreviation for indicating a null pointer.Rate this question:
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- 17.
Las velocidades de en PDH de la jerarquía europea son
- A.
2, 8, 34, 140 y 565 Mbit/s
- B.
2, 6, 34, 140 y 565 Mbit/s
- C.
2, 9, 34, 140 y 274.17 Mbit/s
- D.
2, 8, 34, 140 y 274 Mbit/s
Correct Answer
A. 2, 8, 34, 140 y 565 Mbit/sExplanation
The correct answer is 2, 8, 34, 140, and 565 Mbit/s. This is because these are the correct speeds in the PDH hierarchy according to the European standards.Rate this question:
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- 18.
Los límites de la sección MUX son:
- A.
De los multiplexores STM-n a los multiplexores STM-n
- B.
De los ensambladores de alto orden a los ensambladores de bajo orden
- C.
De los regeneradores extremos a los ensambladores de alto orden
- D.
De los ensambladores de bajo orden a los multiplexores STM-n
Correct Answer
A. De los multiplexores STM-n a los multiplexores STM-nExplanation
The correct answer is "De los multiplexores STM-n a los multiplexores STM-n." This means that the limits of the MUX section are from the STM-n multiplexers to the STM-n multiplexers. This suggests that the MUX section is responsible for multiplexing and demultiplexing signals at the STM-n level, ensuring that the signals are properly transmitted and received within the MUX section.Rate this question:
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- 19.
El encabezado de sección del STM-1 esta formado por:
- A.
RSOH y MSOH
- B.
Apuntadores AU
- C.
Bytes H1 y H2
- D.
POH
Correct Answer
A. RSOH y MSOHExplanation
The correct answer is RSOH y MSOH. The section header of an STM-1 is composed of RSOH (Regenerator Section Overhead) and MSOH (Multiplex Section Overhead). These headers contain important information and control bits that are used for monitoring and managing the transmission of data over the STM-1 network. The RSOH includes information about the regenerator section, while the MSOH contains information about the multiplex section. Both headers are essential for maintaining the integrity and quality of the STM-1 signal.Rate this question:
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- 20.
La siguiente es una alarma que se presenta a nivel de sección:
- A.
MS-FERF
- B.
HP-FERF
- C.
LP-FERF
- D.
P-FEBE
Correct Answer
A. MS-FERFExplanation
The given answer, "MS-FERF," is the correct answer because it is the first alarm mentioned in the list. The other alarms listed, "HP-FERF," "LP-FERF," and "P-FEBE," are not the correct answer because they are mentioned after "MS-FERF" in the list.Rate this question:
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- 21.
La alarma que indica una falla de recepción en el extremo remoto es
- A.
FERF
- B.
LOS
- C.
LOF
- D.
LOP
Correct Answer
A. FERFExplanation
The correct answer is FERF. This is because FERF stands for Far End Receive Failure, which is an alarm that indicates a failure in receiving signals at the remote end. This alarm is triggered when there is a problem with the transmission or reception of data between two remote locations.Rate this question:
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- 22.
La cantidad de TUG-2 que forman un TUG-3 es de:
- A.
7
- B.
3
- C.
5
- D.
6
Correct Answer
A. 7Explanation
La cantidad de TUG-2 que forman un TUG-3 es de 7. Esto significa que se necesitan 7 unidades de TUG-2 para formar una unidad de TUG-3.Rate this question:
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- 23.
El byte que muestra el estado del enlace para fines de mantenimiento y supervisión en un VC-4 es:
- A.
G1
- B.
C2
- C.
B3
- D.
J1
Correct Answer
A. G1Explanation
The correct answer is G1. In a VC-4, G1 is the byte that displays the link status for maintenance and supervision purposes.Rate this question:
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- 24.
Las velocidades de transmisión de SDH son:
- A.
155.520, 622.080 y 2488.320 Mb/s
- B.
2048, 34368 y 139264 Mb/s
- C.
155520, 622048 y 2488320 Mb/s
- D.
139.264, 155.520 y622.080 Mb/s
Correct Answer
A. 155.520, 622.080 y 2488.320 Mb/sExplanation
The correct answer is 155.520, 622.080, and 2488.320 Mb/s.Rate this question:
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- 25.
Diga que significan las letras STM-n
- A.
Módulo de transporte síncrono de orden n
- B.
Módulo de transferencia asíncrona de nivel n
- C.
Modulación por sistema de tiempos de nivel n
- D.
Modulación síncrona de transferencia de orden n
Correct Answer
A. Módulo de transporte síncrono de orden nExplanation
Las letras STM-n significan "Módulo de transporte síncrono de orden n".Rate this question:
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- 26.
Es el recipiente donde se acomodan las señales de información de entrada según la estructura SDH
- A.
Contenedor
- B.
Unidad administrativa
- C.
Unidad tributaria
- D.
Módulo de transporte
Correct Answer
A. ContenedorExplanation
The correct answer is "Contenedor". A "contenedor" is a container or holder where the input information signals are arranged according to the SDH (Synchronous Digital Hierarchy) structure. It is used to organize and transport the data signals efficiently within the SDH network.Rate this question:
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- 27.
Los límites del trayecto de alto orden son:
- A.
De los ensambladores de alto orden a los ensambladores de alto orden
- B.
De los multiplexores STM-n a los regeneradores extremos
- C.
De los ensambladores de bajo orden a los regeneradores extremos
- D.
De los regeneradores extremos a los multiplexores STM-n
Correct Answer
A. De los ensambladores de alto orden a los ensambladores de alto ordenExplanation
The correct answer states that the limits of the high-order path are from high-order assemblers to high-order assemblers. This means that the path is limited to the connection between high-order assemblers and does not extend to other components such as multiplexers or regenerators.Rate this question:
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- 28.
La trayectoria de alto orden de punta a punta se representa con las letras
- A.
HLP
- B.
LLP
- C.
RSOH
- D.
MSOH
Correct Answer
A. HLPExplanation
The correct answer is HLP because "HLP" represents the highest order trajectory from start to finish. "LLP" represents a lower order trajectory, "RSOH" represents a moderately high order trajectory, and "MSOH" represents a moderately low order trajectory. Therefore, "HLP" is the correct answer as it represents the highest order trajectory.Rate this question:
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- 29.
Es la velocidad de transmisión del STM-16
- A.
2488.320 Mb/s
- B.
24883.20 Kb/s
- C.
2488.320 Kb/s
- D.
2488320 Mb/s
Correct Answer
A. 2488.320 Mb/sExplanation
The correct answer is 2488.320 Mb/s. This is the correct answer because it matches the given statement that it is the transmission speed of the STM-16. The other options, 24883.20 Kb/s, 2488.320 Kb/s, and 2488320 Mb/s, do not match the given statement and are therefore incorrect.Rate this question:
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- 30.
El enrutador digital síncrono es conocido como:
- A.
SDXC
- B.
ADM
- C.
SDE
- D.
REG
Correct Answer
A. SDXCExplanation
The correct answer is SDXC. SDXC stands for Synchronous Digital Cross-Connect, which is a type of digital router used in telecommunications networks. It is known for its ability to route synchronous digital signals efficiently and accurately.Rate this question:
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- 31.
Es la velocidad de transmisión del STM-1
- A.
155.520 Mb/s
- B.
155.520 Kb/s
- C.
1555.20 Kb/s
- D.
155520 Mb/s
Correct Answer
A. 155.520 Mb/sExplanation
The correct answer is 155.520 Mb/s. This refers to the transmission speed of the STM-1, which is a standard for synchronous digital hierarchy (SDH) telecommunications. The "Mb/s" stands for megabits per second, indicating a data transfer rate of 155.520 million bits per second.Rate this question:
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- 32.
Cuando la velocidad de trama del VC-4 es baja con respecto a la del AUG, se requiere:
- A.
Justificación positiva
- B.
Justificación negativa
- C.
SLIP
- D.
Justificación nula
Correct Answer
A. Justificación positivaExplanation
When the frame rate of the VC-4 is lower than that of the AUG, a positive justification is required. This means that there needs to be a valid reason or explanation for why the frame rate of the VC-4 is slower compared to the AUG. This could be due to factors such as technical limitations, network congestion, or intentional throttling of the frame rate.Rate this question:
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- 33.
Es una de las características del sistema SDH
- A.
Permite insertar y extraer canales sin demultiplexar toda la señal
- B.
La extracción/inserción de señales de mas bajo nivel no se pueden hacer en los nodos intermedios de una trayectoria, solamente en los nodos terminales de la misma
- C.
Para extraer una señal de mas bajo nivel a partir de la señal de mas alto nivel se requiere hacer una demultiplexación completa
- D.
No tiene la función de extracción/inserción de señales de mas bajo nivel a partir de la señal de mas alto nivel
Correct Answer
A. Permite insertar y extraer canales sin demultiplexar toda la señalExplanation
El sistema SDH permite insertar y extraer canales sin tener que demultiplexar toda la señal. Esto significa que es posible agregar o quitar canales individuales sin tener que descomponer la señal en sus componentes más pequeños. Esta característica es importante porque permite una mayor flexibilidad y eficiencia en el manejo de la señal, ya que no es necesario realizar una demultiplexación completa para realizar cambios en los canales.Rate this question:
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- 34.
En las señales eléctricas de 155Mb/s se utiliza el código
- A.
CMI
- B.
ADI
- C.
HDB3
- D.
NRZ
Correct Answer
A. CMIExplanation
In electrical signals of 155Mb/s, the code used is CMI.Rate this question:
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- 35.
La alarma que indica error de bloque del extremo remoto es:
- A.
FEBE
- B.
LOF
- C.
LOP
- D.
FERF
Correct Answer
A. FEBEExplanation
FEBE stands for Far End Block Error. In a telecommunications network, FEBE is an alarm that indicates an error in the transmission of data between the local and remote ends. This alarm is triggered when the receiving end detects a block error in the data received from the remote end. Therefore, FEBE is the correct answer for the alarm that indicates an error in the remote end block.Rate this question:
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- 36.
Son algunas recomendaciones que definen la SDH
- A.
G.707, G.708 y G.709
- B.
G.400 y G.409
- C.
G.821, G.825 y G.829
- D.
G.703 y M.30
Correct Answer
A. G.707, G.708 y G.709Explanation
The correct answer is G.707, G.708 y G.709. These are the recommendations that define the SDH (Synchronous Digital Hierarchy) standard. SDH is a standardized multiplexing protocol used in telecommunications to transport large amounts of data over optical fiber networks. G.707 defines the basic structure and multiplexing of the SDH signal, G.708 specifies the mapping of PDH (Plesiochronous Digital Hierarchy) signals into SDH, and G.709 defines the framing structure and management of the SDH signal. These recommendations are essential for the implementation and operation of SDH networks.Rate this question:
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- 37.
Sistema que se utiliza para la operacion y mantenimiento de la red SDH:
- A.
Red de administracion de telecomunicaciones TMN
- B.
Canal de comunicacion DCC-R
- C.
Red TELEPAC de la SCT
- D.
Canal de comunicacion DCC-M
Correct Answer
A. Red de administracion de telecomunicaciones TMNExplanation
The correct answer is "Red de administracion de telecomunicaciones TMN". This is because TMN (Telecommunications Management Network) is a system that is used for the operation and maintenance of the SDH (Synchronous Digital Hierarchy) network. TMN provides functions such as network management, fault management, and performance management, allowing for efficient operation and maintenance of the SDH network. The other options mentioned, such as DCC-R, DCC-M, and TELEPAC, are not specifically related to the operation and maintenance of the SDH network.Rate this question:
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- 38.
Tipo de modo que se utiliza actualmente en TELMEX e incluye justificacion:
- A.
Modo Asincrono flotante
- B.
Modo Sincrono por Bit
- C.
Modo Sincrono por Byte
- D.
Modo Asincrono por Byte
Correct Answer
A. Modo Asincrono flotanteExplanation
The correct answer is "Modo Asincrono flotante." This mode is currently used in TELMEX and it includes justification.Rate this question:
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- 39.
Which one do you like?
- A.
Option 1
- B.
Option 2
- C.
Option 3
- D.
Option 4
Correct Answer
A. Option 1 -
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