Technologies & Infrastructure Flashcards

Which of the following is a core element of telecommunications infrastructure?

Answer: Routers and switches

Routers and switches are fundamental components of telecommunications infrastructure, forming the backbone of network connectivity. Routers direct data packets between different networks, while switches connect devices within the same network. They enable efficient and organized data flow, making them essential for any modern communication system.

What is the function of a multiplexer?

Answer: Combines signals into one

A multiplexer (MUX) is a device that combines multiple input signals into a single output signal over a shared medium. This process, known as multiplexing, allows for the efficient transmission of several data streams simultaneously over one communication channel. It optimizes bandwidth usage and reduces the need for multiple physical lines.

Which technology supports high-speed data over telephone lines?

Answer: DSL

Digital Subscriber Line (DSL) technology provides high-speed internet access by transmitting digital data over standard telephone lines. It utilizes frequencies not used for voice calls, allowing simultaneous internet and phone service over the same copper wire infrastructure. This makes it a cost-effective solution for broadband in many areas.

What does the core network manage?

Answer: Routing and switching

The core network in telecommunications is responsible for the primary functions of routing and switching data traffic across the network. It acts as the central hub, connecting various access networks and ensuring that data packets are efficiently directed to their correct destinations. This central role is critical for overall network performance and reliability.

What is a main benefit of fiber optics?

Answer: High bandwidth and long distance

Fiber optics offers significant advantages in telecommunications, primarily its ability to transmit data at very high bandwidths over long distances with minimal signal loss. This is due to light signals traveling through glass fibers, which are immune to electromagnetic interference. It makes fiber ideal for high-speed internet, large data transfers, and critical infrastructure.

Which layer of the OSI model handles logical addressing?

Answer: Network layer

The Network layer (Layer 3) of the OSI model is responsible for logical addressing, which involves assigning IP addresses to devices to enable routing across different networks. It handles the forwarding of data packets from source to destination. This layer makes crucial routing decisions based on these logical addresses, ensuring data reaches the correct recipient.

What is the backbone in telecom?

Answer: High-capacity network links

The backbone in telecommunications refers to the primary, high-capacity network links that connect major network nodes and provide the main data pathways. These robust links carry the bulk of network traffic, ensuring fast and reliable communication across wide areas. They are essential for interconnecting smaller networks and facilitating global data exchange.

What is the primary use of satellite communication?

Answer: Provide coverage to remote areas

Satellite communication is primarily utilized to provide telecommunications coverage to remote or geographically challenging areas where terrestrial infrastructure is impractical or too costly to deploy. Satellites orbiting Earth can broadcast signals over vast regions, enabling connectivity for otherwise isolated locations. This makes it crucial for global communication and emergency services.

Which device converts digital signals for analog transmission?

Answer: Modem

A modem (modulator-demodulator) is a device that converts digital signals from a computer into analog signals suitable for transmission over analog telephone lines, and vice versa. This conversion is essential for internet access over traditional phone networks. It allows digital devices to communicate over analog transmission mediums.