Cuestionario: Redes De Telecomunicaciones
Questions and Answers
- 1.
Es la unidad mínima de expresión o de información sin orden ni sentido:
- A.
Dato
- B.
Bit
- C.
Byte
Correct Answer
A. DatoExplanation
A "dato" is the minimum unit of expression or information without any order or meaning. It is a piece of information that does not have any specific structure or organization. In contrast, a "bit" is the smallest unit of data in computing, representing a binary value of either 0 or 1. A "byte" is a unit of digital information that typically consists of 8 bits and is used to represent a character or a number in computer systems.Rate this question:
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- 2.
Es la unidad básica en comunicación de datos, y es representado por un nivel alto o bajo , si o no , 1 o 0 (83)
- A.
Bit
- B.
Byte
- C.
Dato
- D.
E1
Correct Answer
A. BitExplanation
A bit is the basic unit of information in data communication. It is represented by a high or low level, yes or no, or 1 or 0.Rate this question:
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- 3.
1. Es la Velocidad hasta la cual opera el equipo que funciona con el protocolo 802.11b
- A.
2 Mbps
- B.
16 Mbps
- C.
8 Mbps
Correct Answer
A. 2 MbpsExplanation
The correct answer is 2 Mbps. This is the speed at which the equipment operates when using the 802.11b protocol. The 802.11b protocol is an older wireless networking standard that operates at a maximum speed of 11 Mbps. However, due to various factors such as interference and distance, the actual achievable speed is often lower. In this case, the equipment is operating at a speed of 2 Mbps, which is within the range of speeds that can be achieved with the 802.11b protocol.Rate this question:
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- 4.
1. Es una combinación de transmisor y receptor, que se encarga de convertir una forma de señal en otra o un medio a otro (Por ejemplo se emplea en la conversión de par trenzado a fibra óptica).
- A.
Transceptor
- B.
Receptor
- C.
Transductor
Correct Answer
A. TransceptorExplanation
A transceptor es una combinación de transmisor y receptor, lo cual implica que tiene la capacidad de transmitir y recibir señales. Su función principal es convertir una forma de señal en otra o un medio a otro. En este caso específico, se menciona que se utiliza en la conversión de par trenzado a fibra óptica, lo cual indica que el transceptor es capaz de recibir una señal en forma de par trenzado y convertirla en una señal de fibra óptica para su transmisión. Por lo tanto, la opción correcta es "Transceptor".Rate this question:
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- 5.
1. Es uno de los propósitos de la creación de subredes:
- A.
Evitar problemas de congestión en la red
- B.
Para obtener más redes
- C.
Más Económica
Correct Answer
A. Evitar problemas de congestión en la redExplanation
La creación de subredes permite dividir una red en segmentos más pequeños, lo que ayuda a evitar problemas de congestión en la red. Al dividir la red en subredes, se reducen la cantidad de dispositivos y tráfico en cada segmento, lo que evita la sobrecarga y mejora el rendimiento de la red en general. Esto permite un mejor flujo de datos y evita que la red se sature, lo que puede causar retrasos y pérdida de paquetes.Rate this question:
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- 6.
1. Es un ejemplo de una terminal RDSI:
- A.
Terminales de teletexto
- B.
Terminales para teléfonos análogos
- C.
Terminal de Red
Correct Answer
A. Terminales de teletextoExplanation
The correct answer is "Terminales de teletexto." This is because teletext terminals are an example of an ISDN terminal. Teletext is a text-based information retrieval service that was commonly used in the past to provide news, weather updates, and other information on television screens. These terminals were specifically designed to access and display teletext content, making them a type of ISDN terminal.Rate this question:
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- 7.
1. Es un conjunto de programas y protocolos de comunicación que permite la compartición de recursos entre varias computadoras interconectadas en red: (98)
- A.
Sistema operativo de red
- B.
Protocolos de LAN
- C.
Aplicaciones de Red
Correct Answer
A. Sistema operativo de redExplanation
A network operating system is a software that allows multiple interconnected computers to share resources. It provides a set of programs and communication protocols that facilitate this sharing of resources. This includes managing network connections, file sharing, printer sharing, and other network-related tasks. The network operating system acts as an intermediary between the hardware and software components of the network, ensuring smooth communication and coordination between them.Rate this question:
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- 8.
1. Especifica la dirección de quien envío la trama. Es siempre una dirección de Unicast.
- A.
SA (Source Address)
- B.
DA (Destiny Address)
- C.
OA (Origin Address)
Correct Answer
A. SA (Source Address)Explanation
The given answer states that the correct option is SA (Source Address). This means that the SA field in a network frame specifies the address of the sender of the frame. It is always a unicast address, which means it is intended for a specific recipient. The SA field helps in identifying the source of the frame and is crucial for network communication and troubleshooting.Rate this question:
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- 9.
1. Especificación que utiliza dos fibras ópticas (transmisión y recepción), con una distancia máxima de 2,000 metros a una velocidad de transmisión de 100 Mbps
- A.
10Base-FL
- B.
10Base-T
- C.
10Base-TL
Correct Answer
A. 10Base-FLExplanation
The correct answer is 10Base-FL. This is because the specification mentions the use of two optical fibers for transmission and reception, with a maximum distance of 2,000 meters and a transmission speed of 100 Mbps. The "FL" in 10Base-FL stands for "Fiber Link," indicating the use of fiber optic cables for communication. The other options, 10Base-T and 10Base-TL, refer to different types of twisted pair copper cables, which are not mentioned in the given specification.Rate this question:
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- 10.
Esta capa asegura una entrega "confiable" de datos entre procesos que corren en las computadoras de fuente y destino. Debe de notarse que la comunicación es entre procesos no entre dispositivos con
- A.
Capa 4 o de Transporte
- B.
Capa 6 ó de Presentación
- C.
Capa 7 ó Aplicación
- D.
Capa 5 ó de Sesión
Correct Answer
A. Capa 4 o de TransporteExplanation
La capa 4 o de Transporte asegura una entrega "confiable" de datos entre procesos que corren en las computadoras de fuente y destino. Esta capa se encarga de dividir los datos en segmentos y agregarles información de control para asegurar que lleguen correctamente al destino. Además, se encarga de controlar el flujo de datos y de manejar posibles errores en la comunicación.Rate this question:
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- 11.
1. Esta capa realiza la función de codificación (ASCII, EBCDIC, etc.)
- A.
Capa 6 ó de Presentación
- B.
Capa 7 ó Aplicación
- C.
Capa 5 ó de Sesión
- D.
Capa 4 o de Transporte
Correct Answer
A. Capa 6 ó de PresentaciónExplanation
The correct answer is "Capa 6 ó de Presentación". This layer is responsible for encoding data into a format that can be understood by the receiving system. It converts the data from the application layer into a standardized format, such as ASCII or EBCDIC, so that it can be transmitted over the network. This layer also handles data compression and encryption, ensuring that the data is secure and can be efficiently transmitted.Rate this question:
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- 12.
1. Especificación que utiliza un cable de par trenzado tipo UTP (Unshielded Twisted Pair) categoría 3 o superior con conector RJ-45, con una capacidad de transmisión de 10 Mbps a una distancia de 100 m.
- A.
10Base-T
- B.
100Base-T
- C.
10Base-TL
Correct Answer
A. 10Base-TExplanation
The correct answer is 10Base-T because it specifies the use of an UTP cable (Unshielded Twisted Pair) category 3 or higher with an RJ-45 connector, capable of transmitting at 10 Mbps over a distance of 100 meters. This matches the given specifications, making it the correct choice.Rate this question:
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- 13.
1. Estándar de señalización entre Router y el Switch Frame Relay responsable de la administración de la conexión y del estado de mantenimiento entre los dispositivos.
- A.
LMI
- B.
NNI
- C.
UNI
- D.
VPI
Correct Answer
A. LMIExplanation
LMI stands for Local Management Interface. It is a signaling standard used between a router and a Frame Relay switch. LMI is responsible for managing the connection and maintaining the status between these devices. It provides information about the status of the virtual circuits, such as whether they are active or inactive, and helps in detecting and recovering from any failures or errors in the network.Rate this question:
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- 14.
Este tipo de interfaz, conecta dos conmutadores ATM
- A.
NNI (Network to Network Interface)
- B.
UNI (User to Network Interface,VPI)
- C.
PT (Payload Type, Tipo de carga)
- D.
VPI (Virtual Path Identifier)
Correct Answer
A. NNI (Network to Network Interface)Explanation
The given correct answer is NNI (Network to Network Interface). This answer is appropriate because the question mentions that this type of interface connects two ATM switches. NNI is a type of interface that is used to connect two different networks or switches together. It allows for the exchange of data and information between these networks, ensuring seamless communication and interoperability.Rate this question:
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- 15.
1. La banda de frecuencia destinada para la telefonía celular esta en torno de los:
- A.
800 MHz
- B.
50 MHz
- C.
750MHz
- D.
852MHz
Correct Answer
A. 800 MHzExplanation
The correct answer is 800 MHz. This is the frequency band commonly used for cellular telephony. It falls within the range of frequencies designated for mobile communication and allows for efficient transmission of voice and data signals.Rate this question:
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- 16.
1. La capa del modelo OSI que proporciona servicios de comunicación que son más directamente comprensibles al usuario es:
- A.
Capa 7 ó Aplicación
- B.
Capa 6 ó de Presentación
- C.
Capa 4 ó transporte
- D.
Capa 5 ó Sesión
Correct Answer
A. Capa 7 ó AplicaciónExplanation
The correct answer is Capa 7 ó Aplicación. The application layer is responsible for providing services directly to the user. This layer includes protocols that allow users to access network resources and services, such as email, web browsing, and file transfer. It is the highest layer in the OSI model and is the closest to the user.Rate this question:
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- 17.
1. La capa más alta asociada con el movimiento de datos a través de la red, es la de (81)
- A.
Capa 4 o transporte
- B.
Capa 5 ó Sesión
- C.
Capa 6 ó de Presentación
Correct Answer
A. Capa 4 o transporteExplanation
The correct answer is Capa 4 o transporte. The question is asking for the highest layer associated with data movement across the network. The transport layer, also known as Layer 4, is responsible for ensuring reliable and efficient delivery of data between network devices. It handles tasks such as segmentation, flow control, and error correction. Layers 5 and 6, the session layer and presentation layer, respectively, are not directly involved in data movement.Rate this question:
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- 18.
La capa que enlaza dos procesos de Aplicación en una relación cooperativa durante cierto tiempo
- A.
Capa 5 o Sesión
- B.
Option 2
- C.
Capa 6 ó de Presentación
Correct Answer
A. Capa 5 o SesiónExplanation
The correct answer is Capa 5 o Sesión. This layer is responsible for establishing, managing, and terminating sessions between two communicating applications. It ensures that data is transmitted properly and in the correct order, handles error recovery, and manages synchronization between the sender and receiver. This layer also handles encryption and decryption of data if necessary. The Presentation layer (Capa 6) is responsible for data formatting, compression, and encryption, but it does not handle session management.Rate this question:
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- 19.
1. La dirección 00-AF-77-03-87-7F es un ejemplo de dirección:
- A.
Física (MAC)
- B.
Lógica
- C.
IP
- D.
IPV6
Correct Answer
A. Física (MAC)Explanation
The given address "00-AF-77-03-87-7F" is an example of a physical (MAC) address. MAC addresses are unique identifiers assigned to network interfaces, such as Ethernet or Wi-Fi adapters, at the hardware level. They are used to identify devices on a local network. The format of a MAC address consists of six groups of two hexadecimal digits, separated by hyphens or colons.Rate this question:
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- 20.
1. La función de la red de tránsito es:
- A.
Interconectar las centrales locales entre sí o con los nodos especializados de la red
- B.
Permiten la conexión de los terminales de abonado a la red, a través de unas configuraciones de acceso normalizadas.
- C.
Interconectar las centrales locales entre sí
Correct Answer
A. Interconectar las centrales locales entre sí o con los nodos especializados de la redExplanation
The correct answer is "Interconectar las centrales locales entre sí o con los nodos especializados de la red." This means that the function of the traffic network is to connect local exchanges together or with specialized nodes in the network. This allows for the connection of subscriber terminals to the network through standardized access configurations.Rate this question:
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- 21.
1. La instalación de abonado RDSI está formado por
- A.
Los equipos terminales de abonado y por una red interior que conecta dichos terminales con la línea de transmisión
- B.
Formada por los sistemas de transmisión digital entre la instalación del abonado y la central local
- C.
Los equipos terminales de abonado y la central local
Correct Answer
A. Los equipos terminales de abonado y por una red interior que conecta dichos terminales con la línea de transmisiónExplanation
The correct answer is "Los equipos terminales de abonado y por una red interior que conecta dichos terminales con la línea de transmisión." This answer states that the RDSI subscriber installation consists of subscriber terminal equipment and an internal network that connects these terminals to the transmission line. This explanation accurately describes the components of the RDSI subscriber installation.Rate this question:
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- 22.
1. La primera red experimental se creó en 1973 en el Centro de investigación de Palo Alto (PARC) de la Xerox Corporation.
- A.
Red Ethernet (ARPANET)
- B.
TCP/IP
- C.
DARPA
- D.
UNIX
Correct Answer
A. Red Ethernet (ARPANET)Explanation
The correct answer is Red Ethernet (ARPANET). ARPANET was the first experimental network created in 1973 at the Xerox Corporation's Palo Alto Research Center (PARC). ARPANET was a pioneering packet-switching network and is considered the predecessor to the modern internet. It was developed by the Advanced Research Projects Agency (ARPA) of the United States Department of Defense. Ethernet, on the other hand, is a local area network (LAN) technology that was developed by Xerox Corporation in the 1970s and became widely adopted in the 1980s. While both ARPANET and Ethernet played significant roles in the development of computer networking, ARPANET was the first experimental network created at PARC.Rate this question:
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- 23.
1. La RDSI ofrece conexiones por conmutación de circuitos a:
- A.
64 Kbps
- B.
128 Kbps
- C.
32 Kbps
- D.
8 Kbps
Correct Answer
A. 64 KbpsExplanation
La RDSI (Red Digital de Servicios Integrados) ofrece conexiones por conmutación de circuitos a una velocidad de 64 Kbps. Esto significa que la RDSI es capaz de transmitir datos a una velocidad de 64 kilobits por segundo. La conmutación de circuitos implica establecer una conexión dedicada entre el origen y el destino durante toda la duración de la comunicación, lo que garantiza una calidad de servicio constante pero puede resultar menos eficiente en términos de uso del ancho de banda.Rate this question:
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- 24.
1. La señal STM-1 se puede ver como una trama de:
- A.
9 Filas por 270 Columnas
- B.
9 Filas por 5 Columnas
- C.
9 Filas por 260 Columnas
- D.
6 Filas por 270 Columnas
Correct Answer
A. 9 Filas por 270 ColumnasExplanation
The correct answer is 9 Filas por 270 Columnas because the STM-1 signal is represented as a frame with 9 rows and 270 columns. This frame structure is used for transmitting synchronous digital signals over optical fiber networks. Each row represents a specific part of the signal, such as the payload, overhead, and synchronization information, while each column represents a specific time slot within the frame.Rate this question:
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- 25.
1. La terminación de red NT1 se encuentra localizada físicamente en:
- A.
En las instalaciones del abonado
- B.
En las centrales CTI’s
- C.
En las Centrales Tandem
- D.
En las instalaciones de Telmex
Correct Answer
A. En las instalaciones del abonadoExplanation
The correct answer is "En las instalaciones del abonado." This means that the NT1 network termination is physically located at the subscriber's premises.Rate this question:
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- 26.
1. La velocidad de un canal B en RDSI es (90)
- A.
64 Kbps
- B.
128 Kbps
- C.
24 Kbps
- D.
16 Kbps
Correct Answer
A. 64 KbpsExplanation
The correct answer is 64 Kbps. In an Integrated Services Digital Network (ISDN), a B channel is used for carrying user data. Each B channel has a data rate of 64 Kbps, which allows for the transmission of digital voice, video, and data. Therefore, the correct answer is 64 Kbps.Rate this question:
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- 27.
1. La velocidad de un canal D en un acceso básico RDSI es:
- A.
16 Kbps
- B.
64 Kbps
- C.
128 Kbps
- D.
24 Kbps
Correct Answer
A. 16 KbpsExplanation
The correct answer is 16 Kbps. In an ISDN basic rate interface, the D channel is used for transmitting data and signaling information. The D channel has a bandwidth of 16 Kbps, which is used for establishing and maintaining the connection, as well as for carrying control information. The B channel, on the other hand, is used for carrying user data and has a bandwidth of 64 Kbps.Rate this question:
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- 28.
1. Las etapas básicas para digitalizar una señal de voz son:
- A.
Filtrado, Muestreo, Cuantificación y Codificación
- B.
Filtrado, Muestreo, Cuantificación y Coordinación
- C.
Filtrado, Muestreo, Verificacion y Codificación
Correct Answer
A. Filtrado, Muestreo, Cuantificación y CodificaciónExplanation
The basic stages for digitizing a voice signal are filtering, sampling, quantization, and encoding. Filtering is the process of removing unwanted frequencies from the signal. Sampling involves taking discrete samples of the analog signal at regular intervals. Quantization is the process of representing each sample with a finite number of bits. Finally, encoding refers to the process of converting the quantized samples into a digital format for storage or transmission.Rate this question:
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- 29.
1. Las operaciones necesarias para una red LAN corresponden a las capas:
- A.
Capa 1 ó Física y Capa 2 ó enlace de datos
- B.
Capa 1 ó Física y Capa 3 Red
- C.
Capa 2 ó enlace de datos y Capa 3 Red
Correct Answer
A. Capa 1 ó Física y Capa 2 ó enlace de datosExplanation
The correct answer is Capa 1 ó Física y Capa 2 ó enlace de datos. This is because the physical layer (Capa 1) is responsible for the physical transmission of data over the network, such as the cables, connectors, and electrical signals. The data link layer (Capa 2) is responsible for the reliable transmission of data between two devices on the same network, handling issues such as error detection and flow control. Therefore, both of these layers are necessary for the operation of a LAN.Rate this question:
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- 30.
1. Línea de Abonado Digital Asimétrica, es una tecnología que se utiliza actualmente para transmitir en forma asimétrica caudales de hasta 8 Mbps a través del mismo par de cobre de las líneas telefónicas instaladas:
- A.
ADSL
- B.
VDSL
- C.
DSL
- D.
GPON
Correct Answer
A. ADSLExplanation
ADSL, or Asymmetric Digital Subscriber Line, is a technology that is currently used to transmit asymmetric data rates of up to 8 Mbps over the same copper pair of installed telephone lines. This technology allows for faster download speeds compared to upload speeds, making it suitable for internet services where users typically download more data than they upload.Rate this question:
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- 31.
Los intervalos de redes Clase A se encuentran entre:
- A.
0.0.0.0 hasta 127.255.255.255
- B.
0.0.0.0 hasta 255.255.0.0
- C.
0.0.0.0 hasta 255.255.255d.0
Correct Answer
A. 0.0.0.0 hasta 127.255.255.255Explanation
The correct answer is "0.0.0.0 hasta 127.255.255.255". This is because Class A networks have a range of IP addresses starting from 0.0.0.0 to 127.255.255.255. Class A networks have a very large number of available IP addresses, as the first octet of the IP address is reserved for the network identifier and the remaining three octets are used for host identifiers. This allows for a maximum of 16,777,214 hosts on a Class A network.Rate this question:
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- 32.
1. Los Modem Ópticos son equipos utilizados específicamente para servicios con velocidades de(99)
- A.
4.096 Mbps (Enlace E1)
- B.
2.048 Mbps (Enlace E1)
- C.
1.024 Mbps (Enlace E1)
Correct Answer
A. 4.096 Mbps (Enlace E1)Explanation
Optical Modems are specifically designed to provide high-speed services, and in this case, they are used for services with speeds of 4.096 Mbps (Enlace E1). This indicates that the optical modems are capable of handling data at this particular speed, making it the correct answer. The other options, 2.048 Mbps and 1.024 Mbps, are lower speeds and not suitable for the given scenario.Rate this question:
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- 33.
1. Método de acceso al medio que ocupa la subcapa MAC, en el caso de Ethernet (IEEE 802.3 y Ethernet II)
- A.
CSMA/CD
- B.
TCP
- C.
ETHERNET
Correct Answer
A. CSMA/CDExplanation
CSMA/CD stands for Carrier Sense Multiple Access with Collision Detection. It is a method used in Ethernet networks to control access to the network medium. In CSMA/CD, before transmitting data, a device checks if the network is idle (carrier sense). If the network is busy, the device waits for a random period before attempting to transmit again. If two devices transmit at the same time and a collision occurs, they both detect the collision and stop transmitting (collision detection). They then wait for a random period before retransmitting. CSMA/CD helps to prevent data collisions and manage network traffic in Ethernet networks.Rate this question:
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- 34.
1. Método de switcheo que consiste en almacenar la trama de entrada en buffers internos antes de enviarla al puerto de salida (envío después del CRC)
- A.
Almacenamiento y reenvío (store and forward)
- B.
Examina dirección y reenvía (cut trough)
Correct Answer
A. Almacenamiento y reenvío (store and forward)Explanation
The correct answer is "Almacenamiento y reenvío (store and forward)". This method of switching involves storing the incoming frame in internal buffers before sending it to the output port. It ensures that the frame is error-free by performing a CRC check before forwarding it. This method is commonly used in network switches to ensure the integrity of data transmission.Rate this question:
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- 35.
1. Método de switcheo que consiste en examinar la dirección MAC destino de una trama entrante, y luego busca esa dirección en su tabla de switcheo para determinar el puerto por el que debe reenviar la trama. (envío después de que se recibe la dirección destino)
- A.
Examina dirección y reenvía (cut trough)
- B.
Almacenamiento y reenvío (store and forward)
Correct Answer
A. Examina dirección y reenvía (cut trough)Explanation
The correct answer is "Examina dirección y reenvía (cut trough)". This method of switching involves examining the destination MAC address of an incoming frame and then searching for that address in its switching table to determine the port through which the frame should be forwarded. It immediately forwards the frame after receiving the destination address, without waiting for the entire frame to be received. This method allows for faster forwarding of frames compared to the "Almacenamiento y reenvío (store and forward)" method, which waits for the entire frame to be received before forwarding.Rate this question:
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- 36.
1. Nombre que se le asigna a la red que permite la comunicación directa desde el Punto Terminal de Red (PTR) hasta el equipo del usuario.
- A.
Red Interna del Usuario (RIU)
- B.
Punto Terminal de Nodo (PTN)
- C.
Nodo de Acceso a la Red (NAR)
Correct Answer
A. Red Interna del Usuario (RIU)Explanation
The correct answer is "Red Interna del Usuario (RIU)". This term refers to the network that allows direct communication from the Network Termination Point (PTR) to the user's equipment. It indicates that the user has their own internal network within the larger network infrastructure. The other options, "Punto Terminal de Nodo (PTN)" and "Nodo de Acceso a la Red (NAR)", do not accurately describe this specific network.Rate this question:
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- 37.
1. Nombre que se le asigna a la totalidad de los equipos y medio de transmisión utilizados para proporcionar un servicio privado desde un punto terminal de red (PTR) origen hasta un punto terminal de red (PTR) destino
- A.
Enlace Privado (EP)
- B.
Circuito Privado (CP)
- C.
Línea Privada (LPA)
Correct Answer
A. Enlace Privado (EP)Explanation
The correct answer is "Enlace Privado (EP)". This term refers to the entirety of the equipment and transmission media used to provide a private service from a source network terminal point (PTR) to a destination network terminal point (PTR). It is the term commonly used to describe a private connection or link between two points in a network.Rate this question:
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- 38.
1. Número de puerto que emplea TELNET para recibir y transmitir mensajes:
- A.
23
- B.
32
- C.
24
- D.
16
Correct Answer
A. 23Explanation
The correct answer is 23. TELNET is a protocol used for remote login and command execution on a remote computer. It uses port number 23 to establish a connection between the client and the server. This port is specifically assigned for TELNET communication, allowing the exchange of messages between the two parties involved in the communication process.Rate this question:
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- 39.
1. Octetos añadidos para asegurar que la trama sea lo suficientemente larga tal que la técnica de detección de colisiones funcione correctamente.
- A.
Relleno
- B.
Justificación
- C.
Concatenación
Correct Answer
A. RellenoExplanation
The correct answer is "Relleno" (Filler). In networking, "relleno" refers to the process of adding extra bits or bytes to a data frame to ensure that it meets the minimum length required for proper collision detection. This is necessary because collision detection algorithms rely on the transmission time of a frame, and if the frame is too short, collisions may not be detected accurately. By adding filler, the frame is lengthened, allowing for more accurate collision detection.Rate this question:
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- 40.
1. Protocolo basado en HDLC, usado para la señalización de canales de RDSI (Redes Digital de Servicios Integrados)
- A.
LAP-D
- B.
LAP-B
- C.
LLC
Correct Answer
A. LAP-DExplanation
LAP-D (Link Access Procedure on the D Channel) is a protocol based on HDLC (High-Level Data Link Control) that is used for signaling channels in ISDN (Integrated Services Digital Network). It is responsible for establishing and maintaining the communication link between ISDN devices. LAP-D provides reliable and error-free transmission of data over the D channel, which is used for signaling and control purposes in ISDN networks. This protocol ensures the efficient and secure exchange of information between ISDN devices, making it the correct answer in this context.Rate this question:
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- 41.
1. Protocolo que adicionalmente a IP soporta otros protocolos incluyendo IPX (Intercambio de Paquetes de Red) de Novell y el DECnet.
- A.
PPP (Point to Point Protocol)
- B.
Protocol SNMP
- C.
LAP-B
Correct Answer
A. PPP (Point to Point Protocol)Explanation
PPP (Point to Point Protocol) is the correct answer because it is a protocol that supports multiple protocols, including IPX (Novell's Network Packet Exchange) and DECnet. PPP is commonly used for establishing a direct connection between two devices, such as a computer and a modem, and it provides a reliable and secure way to transmit data over a network. It is widely used in internet connections, especially for dial-up and DSL connections.Rate this question:
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- 42.
1. Protocolo que define como mantener conexiones entre DTE y DCE para el acceso de un terminal remoto y las comunicaciones de equipo en redes de datos públicas. Es normalmente empleado en X.25
- A.
LAP-B
- B.
LAP-D
- C.
LLC
Correct Answer
A. LAP-BExplanation
LAP-B is the correct answer because it is a protocol that defines how to maintain connections between DTE (Data Terminal Equipment) and DCE (Data Circuit-terminating Equipment) for remote terminal access and equipment communications in public data networks. It is commonly used in X.25 networks.Rate this question:
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- 43.
Protocolo que emplea la difusión de mensajes para determinar la dirección de hardware o física de la capa MAC correspondiente a una dirección IP
- A.
ARP
- B.
RARP
- C.
DLE
Correct Answer
A. ARPExplanation
ARP (Address Resolution Protocol) is a protocol that uses message broadcasting to determine the physical or hardware address (MAC address) corresponding to an IP address. It is used in computer networks to map an IP address to a MAC address, allowing devices to communicate with each other at the data link layer. ARP is responsible for resolving IP addresses to MAC addresses, enabling the transmission of data packets within a network.Rate this question:
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- 44.
1. Protocolo que proporciona un mecanismo para asignar direcciones IP dinámicamente, de forma que éstas puedan ser reutilizadas automáticamente cuando los host ya no las necesiten:
- A.
DHCP
- B.
LAP-D
- C.
LAP-B
- D.
LLC
Correct Answer
A. DHCPExplanation
The correct answer is DHCP. DHCP stands for Dynamic Host Configuration Protocol. It is a protocol that provides a mechanism for dynamically assigning IP addresses to devices on a network. This allows the IP addresses to be automatically reused when hosts no longer need them. DHCP simplifies network administration and eliminates the need for manual IP address configuration.Rate this question:
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- 45.
1. Protocolo que se usa para transferir archivos entre nodos de red:
- A.
FTP
- B.
DHCP
- C.
SMT
Correct Answer
A. FTPExplanation
FTP (File Transfer Protocol) is a protocol used to transfer files between network nodes. It allows users to upload, download, and manage files on a remote server. DHCP (Dynamic Host Configuration Protocol) is used to assign IP addresses to devices on a network, while SMT (Simple Mail Transfer Protocol) is used for sending and receiving email messages. Therefore, the correct answer is FTP, as it specifically addresses the transfer of files between network nodes.Rate this question:
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- 46.
1. Protocolo que usa la difusión de mensajes para determinar la dirección IP asociada con una dirección de hardware en particular.
- A.
RARP
- B.
ARP
- C.
UDP
Correct Answer
A. RARPExplanation
RARP (Reverse Address Resolution Protocol) is a protocol that uses message broadcasting to determine the IP address associated with a specific hardware address. This means that when a device with a known hardware address needs to find its corresponding IP address, it sends a broadcast message to the network asking for the IP address. The device with the matching IP address then responds with its IP address. RARP is commonly used in situations where a device does not have a configured IP address and needs to obtain one dynamically.Rate this question:
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- 47.
1. ¿Qué hace un switch con la trama cuando comprueba que la dirección MAC de destino está dirigida a un nodo "distinto" del segmento del cual proviene la trama?
- A.
Reexpide la trama
- B.
Solicita la Trama
- C.
Cancela la trama
- D.
Inicia trama
Correct Answer
A. Reexpide la tramaExplanation
Cuando un switch comprueba que la dirección MAC de destino de una trama está dirigida a un nodo "distinto" del segmento del cual proviene la trama, reexpide la trama. Esto significa que el switch enviará la trama a través del puerto adecuado para que llegue al segmento al cual está dirigida la dirección MAC de destino. Esto permite que la trama alcance su destino final en la red.Rate this question:
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- 48.
¿Qué hace un switch con la trama cuando el nodo destino es desconocido para él?
- A.
Envía la trama a todos los segmentos (broadcast), menos por el cual fue recibida la trama
- B.
Envía la trama al segmento (Unicast), menos por el cual fue recibida la trama
- C.
Envía la trama a todos los segmentos (Multicast)
Correct Answer
A. Envía la trama a todos los segmentos (broadcast), menos por el cual fue recibida la tramaExplanation
Cuando un switch recibe una trama con un nodo destino desconocido, la envía a todos los segmentos (broadcast), excepto por el cual fue recibida la trama. Esto se debe a que el switch utiliza la tabla de direcciones MAC para determinar a qué puerto enviar la trama en función de la dirección MAC de destino. Si el switch no tiene una entrada en su tabla para la dirección MAC de destino, lo trata como un destino desconocido y envía la trama a todos los demás puertos, excepto por el cual fue recibida la trama, en un intento de encontrar el nodo destino.Rate this question:
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- 49.
1. Que significan las siglas STM-n:
- A.
Módulo de transporte síncrono de nivel n
- B.
Módulo de transporte asíncrono de nivel n
- C.
Módulo de transporte síncrono de numero n
Correct Answer
A. Módulo de transporte síncrono de nivel nExplanation
Las siglas STM-n significan "Módulo de transporte síncrono de nivel n". Esta respuesta indica que las siglas se refieren a un módulo de transporte que opera de manera síncrona y que está clasificado en un nivel específico, representado por la letra "n".Rate this question:
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- 50.
1. Qué significa "justificar", en términos de PDH:
- A.
Compensar las diferencias de velocidad y fase de las tributarias
- B.
Justificar un retardo
- C.
Compensar las diferencias de velocidad
- D.
Compensar las diferencias de fase de las tributarias
Correct Answer
A. Compensar las diferencias de velocidad y fase de las tributariasExplanation
The correct answer is "Compensar las diferencias de velocidad y fase de las tributarias". This means that "justificar" in terms of PDH refers to compensating for the differences in velocity and phase of the tributaries. This implies that the PDH system is able to adjust and synchronize the different data streams to ensure proper transmission and reception.Rate this question:
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Mar 21, 2023Quiz Edited by
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May 30, 2017Quiz Created by
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