Other Industrial Engineering & Manufacturing Subjects
Wireless Communication
In ................ multiple access is achieved by allocating different time slots for the different users.
Explanation:
Time Division Multiple Access (TDMA) enables multiple users to share a single communication channel by dividing it into distinct, non-overlapping time slots. Each user is assigned a specific slot where they transmit their data, ensuring that signals do not collide with one another. This method efficiently manages bandwidth by allowing sequential access rather than simultaneous transmission, making it the correct choice for time-based allocation.
Term that is used for stationary or mobile wireless station and also have optional central base station is called
Explanation:
An access point serves as the critical bridge between wireless devices and a wired network, functioning as the optional central hub for both stationary and mobile stations. It enables multiple wireless clients to connect simultaneously, managing data traffic and providing the necessary gateway for internet access. This architecture supports flexible network topologies where devices can roam while maintaining connectivity through the central base station. The term specifically defines this intermediary hardware that facilitates wireless communication within a local area network. Without an access point, mobile stations would lack the centralized coordination required for efficient network operation.
Which mode is used for installing networks in wireless communication device characteristics?
Explanation:
Wireless communication devices are specifically designed to operate without physical cables, relying instead on radio waves for data transmission. The fixed and wired mode represents the traditional infrastructure where devices remain stationary and connect via physical cables, which contradicts the core mobility and flexibility of wireless technology. Therefore, the correct classification for installing networks in this context involves understanding the distinction between stationary, cable-dependent setups and the dynamic nature of wireless networks. This fundamental difference makes the fixed and wired option the accurate choice when evaluating the specific characteristics that define non-mobile, cable-connected network installations.
Wireless network standards operate at ________.
Explanation:
Wireless network standards like Wi-Fi are fundamentally defined by protocols that manage physical signal transmission and logical addressing, which are the core responsibilities of the data link layer. This layer ensures reliable data transfer over the wireless medium by handling error detection, frame synchronization, and media access control. While higher layers exist in the network stack, the specific standards governing wireless connectivity operate primarily at the data link layer to facilitate device communication.
Fading of the received radio signals in a mobile communication environment occurs because of .....
Explanation:
Fading in mobile environments is primarily caused by multipath propagation, where signals reach the receiver via multiple paths due to reflections, diffractions, and scattering from obstacles. These various signal copies arrive at slightly different times with varying phases, leading to constructive or destructive interference at the receiver. When destructive interference dominates, the signal amplitude drops significantly, resulting in the observed fading effect. This phenomenon is a fundamental characteristic of wireless channels and directly explains signal degradation in such settings.
A wireless signal is embedded on a _________ wave specified at a certain frequency.
Explanation:
A carrier wave is a high-frequency electromagnetic signal that acts as a vehicle to transport information. In wireless communication, the actual data is modulated onto this stable carrier wave at a specific frequency. This process allows the signal to travel efficiently through the air and be distinguished from background noise. Without the carrier wave, the information could not be transmitted over long distances effectively. Therefore, the blank must be filled with the term that describes this transporting wave. The correct term is carrier, as it is the fundamental component enabling wireless transmission.
A antenna which attempts to direct all its energy in a particular direction is called as a .............
Explanation:
An antenna designed to concentrate its radiated energy into a specific beam rather than spreading it equally in all directions is defined as a directional antenna. This design focuses the signal strength along a particular axis, which significantly improves communication range and reduces interference from unwanted sources. By shaping the radiation pattern to favor a specific path, these antennas are essential for point-to-point links and long-distance broadcasting. The term directly describes this functional characteristic of directing energy, making it the precise technical classification for such devices.
Wi-fi networks are typically classified as _________ wireless networks
Explanation:
Wi-Fi networks operate using radio waves within the 2.4 GHz or 5 GHz frequency bands, which are naturally limited in penetration and propagation distance. These signals are typically confined to a single building or a small campus, covering an area of roughly 100 meters or less under normal conditions. This limited coverage scope defines them as medium-range networks, distinct from short-range technologies like Bluetooth or long-range cellular systems. Consequently, the term medium-range accurately describes the typical spatial extent and operational boundaries of standard Wi-Fi infrastructure.
Wireless access points typically link wireless clients to ________.
Explanation:
A wireless access point acts as a bridge that connects wireless clients to the existing wired network infrastructure. It does not function as a server itself but rather provides the gateway for wireless devices to access resources hosted on wired servers. By converting wireless signals into wired data, it enables seamless connectivity for laptops, phones, and tablets to reach file shares, internet services, and applications. This fundamental role ensures that wireless users can transparently access the same network resources as their wired counterparts without needing direct physical cabling.
In .............. Frequency Spectrum is divided into smaller spectra and is allocated to each user.
Explanation:
Frequency Division Multiple Access (FDMA) operates by partitioning the total available bandwidth into distinct, non-overlapping frequency channels. Each user is assigned a specific slice of this spectrum to transmit their data continuously without interfering with others. This method ensures that simultaneous transmissions occur on separate frequencies, making it the correct choice for a system where the spectrum is divided and allocated per user.
are typically characterized by very small cells, especially in densely populated areas.
Explanation:
The 2.5G system, which integrates GPRS technology with the original GSM network, is specifically characterized by the deployment of very small cells, particularly in densely populated urban areas. This small cell architecture significantly increases network capacity and allows for higher data transmission speeds compared to earlier generations. By utilizing these compact cells, the system efficiently manages the high traffic density found in cities, enabling seamless mobile internet access for users. This evolution from 2G represents a crucial step toward modern high-speed mobile data services.
The basic GSM is based on ____________________ traffic channels.
Explanation:
GSM relies on circuit switching for its dedicated traffic channels, which establish a continuous physical path between the mobile device and the network for the duration of a call. This method guarantees a consistent data rate and low latency, essential for real-time voice communication. By reserving specific resources exclusively for the active session, the system ensures reliable connectivity without the jitter associated with packet-based approaches. Consequently, the fundamental architecture of GSM traffic channels is inherently connection-oriented to maintain stable voice quality.
Wireless communication is started in
Explanation:
Wireless communication fundamentally relies on the transmission of electromagnetic waves, a phenomenon first successfully demonstrated by Guglielmo Marconi in 1895. This pivotal year marks the practical realization of radio waves for long-distance signaling, effectively launching the era of wireless technology. Prior to this date, while theoretical foundations existed, the actual operational start of wireless systems occurred with Marconi's experiments. Therefore, 1895 is historically recognized as the definitive beginning of wireless communication. This milestone transformed global connectivity by enabling data transfer without physical wires.
Wireless LANs implement security measures in the
Explanation:
Wireless LANs primarily implement security measures at the Data Link Layer, specifically within the MAC sublayer, to protect wireless transmissions from eavesdropping and unauthorized access. Protocols like WPA2 and WPA3 operate here to encrypt data frames and manage authentication before data reaches higher layers. This layer is critical because it directly handles the physical medium access and frame structure in a shared wireless environment. By securing the link between the device and the access point, it prevents interception of sensitive information over the air. Consequently, the Data Link Layer serves as the foundational security boundary for wireless networks.
Specifications for a wireless LAN are called
Explanation:
The IEEE 802.11 family of standards specifically defines the protocols for wireless local area networks, establishing the rules for data transmission over radio frequencies. Unlike wired Ethernet standards found in the 802.3 series, this standard governs the physical and MAC layers required for Wi-Fi connectivity. It ensures interoperability between different manufacturers by setting consistent specifications for wireless communication. Consequently, any device adhering to these specifications is recognized as a compliant wireless LAN solution. This makes IEEE 802.11 the definitive identifier for wireless networking technology.
Which of the following is/are the main part(s) of basic cellular system.
Explanation:
A basic cellular system relies on the seamless integration of three core components to function effectively. The mobile unit allows users to communicate while moving, the cell site provides the necessary radio coverage for a specific geographic area, and the mobile telephone switching office manages call routing and network connectivity. Together, these elements form the essential infrastructure that enables wireless communication across a wide region, making the combination of all parts the complete system.
Filter by Difficulty
Difficulty Filter
Sign in to unlock
Sign in to unlock