Redes De Telecominicaciones II

The correct answer is "ENLACES" because the given statement mentions "Son los servicios básicos de telecomunicaciones utilizados para transmisión de voz, datos y video de manera conmutada" which translates to "They are the basic telecommunications services used for switched transmission of voice, data, and video." The term "enlaces" in Spanish refers to links or connections, which aligns with the idea of transmitting data, voice, and video through telecommunication services.

The given correct answer is "Modelo OSI". The explanation for this answer is that the Modelo OSI (Open Systems Interconnection) is a conceptual framework that standardizes the functions of a communication system into seven different layers. These layers allow for the interoperability and portability of applications, data, and users across different types of systems. The Modelo OSI provides a systematic approach to network communication and helps in the development of compatible network protocols and services.

UDP stands for User Datagram Protocol, which is a transport layer protocol that provides a fast and unreliable communication service. Unlike TCP, UDP does not guarantee the delivery of packets or provide error checking. It is also a connectionless protocol, meaning that it does not establish a connection before transmitting data. UDP is commonly used for applications that require low latency and can tolerate some packet loss, such as streaming media or online gaming. Therefore, UDP is the correct answer in this context.

The correct answer is "Errores, Enlace Fisico Confiable." The data link layer is responsible for ensuring reliable communication between two nodes over a physical link. It handles error detection and correction, as well as flow control and framing of data packets. It also establishes and terminates the logical link between two devices, ensuring a reliable physical connection. Therefore, this answer accurately describes the responsibilities of the data link layer.

LMI stands for Local Management Interface. It is a standard protocol used for signaling between a router and a Frame Relay switch. LMI is responsible for managing the connection and maintaining the state of the devices. It allows the router and switch to exchange information about the status of the connection, such as whether it is active or inactive, and to perform various administrative functions.

The correct answer is "Interconectar varias centrales". The function of the transit network is to connect multiple central locations together. This allows for efficient communication and data transfer between these central locations.

SNMP (Simple Network Management Protocol) es un protocolo utilizado para gestionar y supervisar dispositivos en una red. Opera en la capa de aplicación del modelo OSI, lo que significa que se encarga de la comunicación entre las aplicaciones de gestión y los agentes de gestión en los dispositivos de red. Este protocolo permite a los administradores de red recopilar información y controlar el rendimiento de los dispositivos, así como configurar y solucionar problemas en la red. Por lo tanto, la respuesta correcta es CAPA DE APLICACIÓN.

A VLAN (Virtual Local Area Network) is a logical network that segments the infrastructure into different subnets or broadcast domains in the case of Ethernet. It allows for the creation of multiple virtual networks within a physical network, enabling better network management, security, and flexibility. VLANs help to isolate network traffic, improve network performance, and enhance security by separating different types of users or devices into separate virtual networks.

The correct answer is Transporte because the Transport layer is responsible for the end-to-end delivery of data packets between hosts on a network. It ensures that data is delivered reliably and in the correct order. This layer also handles flow control and error detection and correction. Therefore, it is the highest layer associated with data movement in the network.

The given correct answer is VPI. VPI stands for Virtual Path Identifier, which is used in ATM (Asynchronous Transfer Mode) networks to identify the next destination of a cell as it passes through a series of ATM switches on its way to the final destination. The VPI value is included in the cell header and helps in routing the cell correctly within the network.

La arquitectura TCP/IP se caracteriza por su esquema de CLIENTE / SERVIDOR. Esto significa que en esta arquitectura, los dispositivos en la red se dividen en dos roles principales: el cliente, que solicita y consume servicios, y el servidor, que proporciona los servicios solicitados por el cliente. Esta arquitectura permite una comunicación eficiente y escalable entre dispositivos en una red TCP/IP.

The correct answer is "EL SWITCH DESECHA LA TRAMA". When a switch receives a frame that is sent to a node within the same segment from which it was sent, the switch will discard the frame. This is because the switch's main function is to forward frames to the appropriate destination based on the MAC addresses. Since the destination node is within the same segment, there is no need for the switch to forward the frame.

DLCI stands for Data Link Connection Identifier, which is the name used to identify Frame Relay addresses.

The correct answer is Capa Fisica ATM because it is responsible for converting the bits into cells, controlling the transmission and reception on the physical medium, monitoring the ATM limits, and packaging the cell frame into a suitable format for sending through the physical medium.

10Base-T es una especificación de Ethernet. Ethernet es una tecnología de red de área local (LAN) que permite la comunicación de datos entre dispositivos en una red. La especificación 10Base-T se refiere a la velocidad de transmisión de datos de 10 megabits por segundo (Mbps) y utiliza cables de par trenzado para la conexión de dispositivos. Esta especificación fue una de las primeras en ser ampliamente utilizada para la conexión de computadoras en redes locales.

The correct answer is "Par Trenzado de 10Mbps." This is because "10 base T" refers to the Ethernet standard for twisted pair cables, which can support a maximum data transfer rate of 10 megabits per second (Mbps).

The correct answer is DIT o UTR. The explanation for this answer is that the Terminal Red Point (PTR) is physically implemented by the DIT (Data Input Terminal) or UTR (Unit Terminal Red). These are the devices or components responsible for connecting the network to the terminal equipment, allowing communication and data transfer between them.

The correct answer is C-n. It can be inferred from the given statement that "C-n" is the container or recipient where the signals of 2 M are placed.

The correct answer is 100 BASE TX because it is the specification that allows for a maximum distance of 200m at a speed of 100 Mbps. This means that it is the appropriate choice for transmitting data over optical fibers within that distance range at that specific speed.

Frame Relay is a technology that provides high-speed data transmission by establishing a permanent virtual connection between the source and destination. It is particularly suited for applications that generate bursty traffic, meaning that the data is sent in short bursts rather than a continuous stream. Frame Relay is a cost-effective solution for connecting remote locations and has been widely used in wide area networks (WANs). It operates at the data link layer of the OSI model and uses frames to transmit data packets.

DNS (Domain Name System) is a protocol that operates at the session layer of the network. It is responsible for resolving domain names to their corresponding IP addresses. When a user enters a domain name in a web browser, the DNS server translates that domain name into an IP address, allowing the browser to establish a connection with the correct server. DNS plays a crucial role in the functioning of the internet by ensuring that users can access websites using human-readable domain names instead of having to remember complex IP addresses.

ATM cells are fixed-length packets used in asynchronous transfer mode (ATM) networks. Each ATM cell consists of a 5-byte header and a 48-byte payload. Therefore, the total number of bits in an ATM cell is the sum of the bits in the header and the payload. The header is 5 bytes, which is equal to 40 bits, and the payload is 48 bytes, which is equal to 384 bits. Adding these two values together gives a total of 424 bits. Therefore, the correct answer is 53 bytes, as each byte consists of 8 bits.

The given correct answer is "STORE AND FORWARD". This method involves storing the incoming frame in internal buffers before forwarding it to the output port. This process occurs after performing the CRC (Cyclic Redundancy Check) on the frame. This method ensures that the entire frame is received and checked for errors before being forwarded to the destination, which helps in reducing the chances of data loss or transmission errors.

Option 1 is the correct answer because it states that it is the type of information that converts digital signals into ASCII code. ASCII code is a standardized character encoding system that represents text in computers and other devices that use text. This suggests that the given information is being converted into a format that can be understood and processed by computers.

The correct answer is 8 Mb/s. According to the European standard for second-order systems, the nominal speed is 8 Mb/s.

The correct answer is "FIBRA OPTICA Y ESTA CONFIGURADA EN TOPOLOGIA ANILLO DOBLE" (Optical fiber and configured in a dual ring topology). FDDI (Fiber Distributed Data Interface) is a network technology that uses optical fiber as the transmission medium. It employs a dual ring topology, where data is transmitted in both directions simultaneously for redundancy and fault tolerance. This configuration ensures high reliability and fault tolerance in the network.

The correct answer is "SENTIR LA PORTADORA, ACCESO MULTIPLE Y DETECCION DE COLISIONES." These are the three basic functions of the CSMA/CD (Carrier Sense Multiple Access with Collision Detection) media access protocol. "Sentir la portadora" refers to the process of detecting if the communication medium is busy or idle before transmitting. "Acceso múltiple" means that multiple devices can access the medium at the same time. "Detección de colisiones" refers to the ability to detect if two or more devices transmit at the same time, causing a collision, and taking appropriate actions to resolve it.

The given correct answer is Option 1 because the statement "Es la capa que realiza la codificación ASCII" suggests that this layer performs ASCII encoding. ASCII encoding is a character encoding standard that represents text in computers and other devices. Therefore, Option 1 is the most suitable choice as it implies that this layer is responsible for encoding data using the ASCII standard.

The correct answer is 8 BITS because the subnet mask 255.255.255.0 is a Class C subnet mask, which means that the first 24 bits (3 bytes) are assigned to the network portion and the last 8 bits (1 byte) are assigned to the host portion. Therefore, 8 bits correspond to the network and 8 bits correspond to the host.

The correct answer is "ENCABEZADO". The question asks for the specific address of the sender of the frame, which is always a unicast address. The "ENCABEZADO" (header) contains information about the source address of the frame, making it the correct answer.

The correct answer is MINE because the given explanation states that "MINE" is a presentation layer protocol that allows the interpretation of different text formats and other files from SMTP mail servers. This suggests that MINE is the protocol responsible for handling the interpretation and encoding of different types of data in email communication.

The correct answer is "Servicios Conmutados y Privados". This is because the given statement "La RA comprende el Acceso para servicios" translates to "The RA includes access for services". Among the options provided, "Servicios Conmutados y Privados" is the only one that directly relates to services and access. "Enlace Fisico" refers to physical links, "Red de Acceso privados" translates to private access network, and "Red de Acceso multiples" means multiple access network. Therefore, "Servicios Conmutados y Privados" is the most appropriate option based on the given statement.

The correct answer is "128.0.0.0 Y 191.0.0.0". This is because Class B IP addresses range from 128.0.0.0 to 191.255.255.255. Class B addresses are used for medium-sized networks and can support up to 65,534 hosts per network.

The given statement explains that the function of the circuit is to convert analog to digital signals, manage the current call, and provide access to local loop testing. This suggests that the circuit is responsible for handling analog signals in a telephone or communication system, making it a "Circuito de Linea Analogico."

In the time segment TS-0 of the odd frame in a 2M signal, the word "Palabra de Alarma" is used.

The correct answer is 2 MBPS. This is the speed at which the equipment operates in the 802.11b protocol.

El protocolo de transferencia de archivos (FTP) es un protocolo que se utiliza para la transferencia de archivos entre un cliente y un servidor en una red. Este protocolo trabaja en la capa de aplicación del modelo de referencia OSI, lo que significa que se encarga de la comunicación entre las aplicaciones de los dispositivos finales. Al trabajar en esta capa, el protocolo FTP puede utilizar otros protocolos de capas inferiores, como TCP/IP, para garantizar la entrega de los datos de manera confiable.

The correct answer is "ANILLO DOBLE Y DUAL HOMING". This answer refers to the main features of FDDI, which include the use of a dual ring topology for redundancy and fault tolerance, as well as dual homing to provide multiple connections to network devices. These features ensure that the network remains operational even in the event of a failure or break in the network.

SVC stands for Switched Virtual Circuit, which is a type of circuit that is established on-demand and is terminated once the connection is finished. It is a virtual circuit that provides a connection-oriented service, similar to a traditional telephone call. Unlike UDP, which is a connectionless protocol, and ATM and VLAN, which are network technologies, SVC refers specifically to the type of circuit established and terminated as needed.

In a Class B network, the subnet mask 255.255.0.0 indicates that the first 16 bits are reserved for the network address, while the remaining 16 bits are available for host addresses. Therefore, the correct answer is "16 PARA RED Y 16 PARA HOST."

PPP (Point-to-Point Protocol) is a protocol that is used to establish and maintain connections between a Data Terminal Equipment (DTE) and a Data Circuit-terminating Equipment (DCE) for remote terminal access and communication in public data networks. It is commonly used in X.25 networks. PPP provides a reliable and efficient way to transmit data over serial links and supports various network layer protocols, such as IP, IPX, and AppleTalk. It is widely used in dial-up connections, DSL, and other types of internet connections.

A CSU/DSU (Channel Service Unit/Data Service Unit) is a digital modem that connects two or more networks that have digital services such as E0s, E1/T1s, Frame Relay, etc. It acts as a bridge between these networks, allowing them to communicate and exchange data. The CSU (Channel Service Unit) is responsible for maintaining the connection and providing signal amplification and conditioning, while the DSU (Data Service Unit) handles the conversion between digital and analog signals. Therefore, CSU/DSU is the correct answer.

The correct answer is EP Enlace Privado. This is because the question is asking for the name assigned to the entirety of the equipment and transmission media used to support a private service from a source Network Termination Point (NTP) to a destination NTP. "Enlace Privado" translates to "Private Link" in English, which accurately describes the private service being referred to in the question.

The correct answer is "Mascara". In computer networking, a subnet mask or netmask is used to determine the network portion of an IP address and the host portion. It helps in identifying the network address, subnet address, and the host address. The subnet mask is applied to the IP address to separate the network and host portions, allowing devices to communicate within the same network.

The correct answer is PRESENTACION. This layer of the OSI model takes the packets from the application layer and converts them into a generic format that can be read by all computers.

The correct answer is LAB - B. This answer is likely correct because the given description mentions a protocol used for maintaining connections between DTE and DCE for remote terminal access and equipment communications in public data networks. Since LAB - B is the only option related to protocols and network communications, it is the most suitable answer.

A router is a device that connects multiple networks together and allows for the transmission of digital services such as E0s, E1/t1s, Frame Relay, etc. It acts as a bridge between different networks and directs the traffic between them. Unlike a modem, which is used to connect a single device to the internet, a router is used to connect multiple devices and networks. In this context, a router would be the correct answer as it fits the description given in the question.

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, enviará la trama a todos los segmentos de la red, excepto por el segmento por el cual fue recibida la trama. Esto se conoce como envío de la trama a todos los segmentos (broadcast), excepto por el cual fue recibida la trama.

SMTP (Simple Mail Transfer Protocol) is a protocol that works at the application layer of the OSI model. It is used for sending and receiving email messages between servers and clients. SMTP provides a set of rules for how email messages should be formatted, transmitted, and delivered. It is responsible for the transfer of messages from the sender's email client to the recipient's email server. SMTP operates on TCP port 25 and is widely used in the communication of email over the internet.

TCP (Transmission Control Protocol) is a connection-oriented transport layer protocol that provides reliable, ordered, and error-checked delivery of data between applications. It establishes a connection between the sender and receiver before transmitting data and ensures that all packets are received in the correct order and without errors. TCP is widely used in applications such as web browsing, email, file transfer, and streaming media.

The correct answer is 16 Kb/s. In an RDSI (Red Digital de Servicios Integrados) or ISDN (Integrated Services Digital Network), the D channel is used for data transmission. The D channel in a basic access ISDN has a speed of 16 Kb/s, which allows for the transmission of digital data and signaling information.

DHCP (Dynamic Host Configuration Protocol) is the correct answer because it is a protocol that provides an interface for generating dynamic IP addresses. DHCP allows network devices to automatically obtain IP addresses and other network configuration information from a DHCP server. This protocol is commonly used in local area networks (LANs) to efficiently manage and allocate IP addresses to devices, eliminating the need for manual configuration.

LAP-D is the correct answer because it is a protocol based on the HDLC protocol used in Integrated Services Digital Network (ISDN) channels. LAP-D stands for Link Access Procedure for the D Channel and is responsible for managing the signaling and control information on the D channel of an ISDN connection. It provides reliable and error-free transmission of data between the network and the user equipment. LAP-A, LAP-B, and LAP-C are also protocols based on HDLC but they are not specifically used in ISDN channels.

The correct answer is CAPA FISICA because the physical layer of the OSI model is responsible for the actual transmission and reception of data bits over a physical medium, such as cables or wireless signals. A hub is a networking device that operates at the physical layer, as it simply forwards data packets to all connected devices without any intelligence or filtering. Therefore, the hub works at the physical layer of the OSI model.

Prodigy Internet is a value-added service provided by TELMEX that allows residential and commercial customers to access the Internet through any switched telephone line.

The correct answer is "Capa Fisica". In the OSI model, the Physical Layer is responsible for transmitting raw bits of data between communication devices. It deals with the physical aspects of communication such as voltage levels, cables, connectors, and hardware. This layer ensures the reliable transmission of data over the physical medium.

The application layer of the OSI model provides communication services that are more directly understandable to the user. This means that it is responsible for managing user interactions and providing services such as email, file transfer, and web browsing. It is the highest layer in the OSI model and interacts directly with the user, making it the most user-friendly layer.

The correct answer is RED. RED stands for Random Early Detection, which is a mechanism used in network congestion control. It is implemented in the layer where the control and selection of routes for end-user connections in a network takes place. RED helps to prevent network congestion by randomly dropping packets before the network becomes overloaded. This allows for a more balanced distribution of traffic and improved overall network performance.

SNMP (Simple Network Management Protocol) is a network management protocol that is widely used in TCP/IP networks. It allows network administrators to monitor and manage network devices such as routers, switches, and servers. SNMP provides a standardized way for devices to communicate and exchange information about their status and performance. It is designed to be simple and efficient, making it a popular choice for network management in TCP/IP networks.

La sesión proporciona un servicio administrativo que maneja el establecimiento y liberación de una conexión entre dos entidades de presentación. En una comunicación de red, la sesión es responsable de establecer, mantener y finalizar la conexión entre los dispositivos de origen y destino. Además, la sesión también se encarga de la sincronización y el control de flujo de los datos transmitidos entre las entidades de presentación. Por lo tanto, la sesión es la respuesta correcta ya que cumple con la descripción proporcionada en la pregunta.

The given explanation states that the transport layer ensures reliable delivery of data between processes running on the source and destination computers. It highlights that the communication is between processes, not between devices.

HDLC (High-Level Data Link Control) is a protocol that defines three types of stations, two link configurations, and three modes of operation for data transfer. HDLC is widely used in both synchronous and asynchronous data communication applications. It provides a reliable and efficient way to transmit data between devices over a network. HDLC supports point-to-point and multipoint configurations and offers flexibility in terms of the data transfer modes. Therefore, HDLC is the correct answer in this context.

Optical modems are specifically designed for services with speeds of 2048 Mb/s. These modems use optical fibers to transmit data, allowing for high-speed internet connections. The "Mb/s" unit stands for megabits per second, which indicates the amount of data that can be transmitted in one second. With a speed of 2048 Mb/s, the optical modem can handle large amounts of data quickly and efficiently.

The correct answer is CAPA DE APLICACION. This layer of the OSI model provides the interface and services that support user applications. It is responsible for interacting directly with the user and providing services such as file transfer, email, and remote login.

The correct answer is CAPA DE ENLACE because the NIC (Network Interface Card) operates at the data link layer of the OSI model. This layer is responsible for the reliable transfer of data between network devices over a physical link. The NIC handles tasks such as framing, error detection, and flow control, which are all functions of the data link layer.