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WorksheetsMTECH
Total questions: 135
Worksheet time: 1hrs 10mins
What is the Shannon-Weaver model in communication?
A model that describes only verbal communication
A model focused exclusively on the technological aspects of data transmission
A model that includes the sender, message, channel, receiver, and noise
A model intended only for studying interpersonal conflicts
What are the main components of the communication process?
Only sender and receiver
Message, noise, and technologies
Sender, message, channel, receiver, feedback, and noise
Encoding, decoding, and media
How do nonverbal signals affect the effectiveness of communication?
They do not matter in the communication process
They can enhance, complement, or contradict verbal messages
They are only used in art
They replace verbal communication
What is the difference between one-way and two-way communication?
One-way communication is always more effective
One-way communication does not include feedback, while two-way communication does
Two-way communication is used only in written form
There is no difference; they are synonyms
How do cultural differences affect the interpretation of messages?
They do not affect communication
They are only important in business communication
They can lead to different understandings of the same gestures or words
Cultural differences are only considered in verbal communication
What barriers can arise in the process of communication?
Only technical disturbances
Language, psychological, physical, and cultural barriers
Barriers exist only in mass communication
All barriers can be overcome with the help of technology
What is the role of feedback in the communication process?
It is not needed for effective communication
It is only important in interpersonal communication
It allows the sender to confirm that the message was understood correctly
Feedback slows down the communication process
What is context in communication and how does it affect understanding?
Context is only the physical environment
Context includes the setting, cultural norms, and relationships between participants, affecting the interpretation of the message
Context is important only for written communication
Context does not affect understanding
How have technologies changed traditional communication models?
They have completely replaced face-to-face communication
They have added new channels and forms of communication, such as social media and video calls
Technologies have not affected communication
They have made communication less effective
What modern communication models exist?
Only the Shannon-Weaver model
Models focused exclusively on mass communication
Transactional model, convergent model, and social network model
Modern models do not exist
What does the term 'convergence' mean in the context of telecommunications and IT?
Separation of networks into specialized ones
Obsolescence of digital technologies
Integration of voice, data, and multimedia services into a single infrastructure
Exclusively the merger of companies
What are the advantages of merging telecommunications and computing technologies?
Increased costs for services
Reduced costs, unified management, and new services (e.g., VoIP)
Slowed data transmission
Abandonment of internet protocols
What problems arise when integrating these technologies?
Only the need for new equipment
Compatibility of standards, security, and network load
No problems at all
Simplification of network architecture
How does convergence affect the development of network applications?
Limits their functionality
Allows for the creation of complex solutions (e.g., video conferencing + cloud storage)
Makes applications less accessible
Increases energy consumption
What is a network computer and what is its role in convergence?
Device only for data storage
Simplified device dependent on servers, reducing infrastructure costs
Analog of a gaming console
Computer without internet access
What are the architectural features of network applications in the context of convergence?
Strict binding to a single protocol
Flexibility, support for multiple protocols (IP, SIP), and modularity
Absence of data encryption
Use of only local networks
Which protocols ensure compatibility between systems?
Only HTTP
IP, SIP, WebRTC
Which protocols ensure compatibility between systems?
Only HTTP
IP, SIP, WebRTC
SMTP for video
No standard solutions
How do cloud technologies contribute to convergence?
Complicate access to data
Provide centralized management and scalability of services
Require only offline work
Reduce bandwidth
What are some examples of successful convergent solutions?
Offline databases
Unified communications (Microsoft Teams, Zoom)
Analog telephone networks
Local text editors
How does convergence affect the security of information systems?
Excludes cyberattacks
Requires comprehensive protection (VPN, encryption, authentication)
Makes systems vulnerable by default
Excludes the need for passwords
What is SONET and what is its main function?
Programming language
Standard for synchronous data transmission over fiber optics
Router brand
Email protocol
What are the main characteristics of BISDN?
Only for analog telephony
High bandwidth and multimedia support
Works exclusively in local networks
No routing
What is the difference between SONET and BISDN?
SONET is for radio, BISDN is for TV
SONET is synchronous transmission, BISDN is asynchronous (ATM) with flexible bandwidth
BISDN is outdated
SONET does not support data
How does SONET provide synchronous data transmission?
Over Wi-Fi
Using time slots and strict clock synchronization
Only for voice
No error control
What advantages does BISDN offer for multimedia applications?
Only low speed
Guaranteed quality of service (QoS) and support for various types of traffic
No data compression
Requires a wired connection
What are the levels of hierarchy in SONET architecture?
Only the physical layer
STS (Synchronous Transport Signal) and VT (Virtual Tributary)
TCP/IP levels
No hierarchy
How does ATM technology integrate with BISDN?
By email
Provides fixed cell transmission for various types of traffic
Only for text
Excludes routing
What types of services are supported in BISDN?
Voice only
Video, voice, data (e.g., video on demand)
Offline storage
Email without internet
What are the limitations of using SONET in modern networks?
No limitations
High cost and redundancy for small data packets
Does not support fiber optics
Only for mobile networks
How has the development of IP networks affected the use of SONET and BISDN?
Completely replaced them
Partially shifted their functions to IP/MPLS, but SONET remains for backbones
Increased dependence on ATM
Made BISDN the main standard
What is multicasting and how is it used in multimedia networks?
Data transmission to only one recipient
Traffic encryption
Simultaneous distribution of data to a group of recipients (e.g., streaming video)
Silent file compression
What are the advantages of multicasting compared to unicasting?
High implementation cost
Saves bandwidth for mass distribution
Low transmission speed
Does not require router support
Which protocols support multicasting?
HTTP and FTP
IGMP and PIM
SMTP and POP3
TCP and UDP (without specific extensions)
What are the main components of a multimedia conference?
Only a microphone
Audio, video, codec, network protocols, and user interface
Printer and scanner
Local database
How is audio and video synchronization ensured in conferences?
Ignoring delays
Using timestamps (RTP/RTCP)
Manual adjustment
Only for pre-recorded content
What technologies are used for Quality of Service (QoS) management in multimedia networks?
Random packet prioritization
DiffServ, MPLS, traffic management
Disabling encryption
Increasing packet size
What are the bandwidth requirements for video conferencing?
1 Mbps for 4K
Depends on resolution: 1-8 Mbps for HD
No more than 100 Kbps
Only for local networks
How is security ensured in multimedia conferences?
No passwords
Encryption (SRTP), authentication, VPN
Open IP addresses
Using o
How is security ensured in multimedia conferences?
No passwords
Encryption (SRTP), authentication, VPN
Open IP addresses
Use of only analog signals
What standards exist for multimedia conferencing?
Only proprietary solutions
H.323, SIP, WebRTC
SMTP and FTP
None
What are the prospects of multimedia networks in the future?
Abandonment of digital technologies
Adoption of 5G/6G, AR/VR, AI traffic optimization
Return to analog systems
Only for gaming platforms
Why is standardization important for multimedia technologies?
Slows down development
Ensures compatibility between devices and services
Increases costs
Only required for scientific research
Which organizations are involved in multimedia standardization?
Only private companies
ITU-T, ISO/IEC, MPEG
Social networks
Local providers
What are the main stages of the standardization process?
Only development
Research, design, approval, implementation
Patent sales
No stages
What are interface standards and what is their role?
Rules for button design
Specifications for interaction between components (e.g., HDMI, USB)
Only for source code
Not used in multimedia
How do standards ensure compatibility between different devices?
Through unique protocols for each manufacturer
Unification of data formats and protocols (e.g., H.264, MP3)
Require the same OS
Compatibility is not needed
What problems arise when developing new standards?
Only financial costs
Balancing innovation and backward compatibility
Lack of technologies
Reluctance of companies to cooperate
What are some examples of successful multimedia standards?
Only outdated formats
MPEG-4, AAC, WebM
Proprietary codecs
None
How do standards affect innovation in multimedia?
Completely block them
Create a foundation for development (e.g., transition from MP3 to Opus)
Require abandonment of new technologies
Have no effect
What are the time frames for the development and implementation of standards?
1-2 months
Years (for example, H.265 took more than 5 years to develop)
Unlimited
Only for academic purposes
How does international cooperation contribute to standardization?
Complicates the process
Allows for the consideration of the requirements of different countries and markets
Creates competition between standards
Has no influence
What is the Global Information Infrastructure (GII)?
Local corporate network
System of interconnected global telecommunications networks
Single server in a data center
Only satellite communication
What are the goals of the GII?
Restricting access to information
Ensuring universal access to data and services
Content control
For military purposes only
What standards are necessary for the functioning of the GII?
Only national
IP, DNS, international data transmission protocols
Proprietary solutions
None
How does the GII facilitate global information exchange?
Through isolated networks
Integration of networks, standardization, and reduction of barriers
Only for wealthy countries
Uses analog technologies
Which organizations are involved in the development of standards for AI?
Only the UN
ITU, IETF, IEEE
Social networks
No such organizations
What are the main components of the GII?
Only cable networks
Fiber optics, satellites, data centers, protocols
Analog phones
Local disks
How is security ensured in AI systems?
Open access to all data
Encryption, authentication, international agreements
Only passwords
Not ensured
What problems does AI face?
Only technical problems
Cybersecurity, digital inequality, political barriers
Lack of technology
No problems
How does AI influence the economic development of countries?
Slows it down
Stimulates digitalization, trade, and remote work
Only for the IT sector
Has no effect
What are the prospects of AI in the future?
Division into national segments
Expansion of 5G/6G, IoT, quantum networks
Abandonment of the internet
Only for entertainment
What are the main stages of multimedia standardization?
What are the main stages of standardization of multimedia communications?
Only testing
Analysis, development, approval, implementation
Licensing sales
No stages
What role does ITU-T play in standardization?
Creates software for streaming
Develops international telecommunications standards
Controls social networks
Does not participate
How does ISO/IEC JTC1 contribute to the development of standards?
Only for hardware
Coordinates IT and multimedia standards (e.g., MPEG)
Creates national laws
No influence
What are the ITU-T strategies for developing new standards?
Copying proprietary solutions
Open working groups, collaboration with the industry
Only for military purposes
No strategies
What areas of work are most relevant for ISO/IEC JTC1?
Only text formats
Artificial intelligence, quantum computing, multimedia codecs
Analog technologies
Undefined
How is the harmonization of standards ensured between different organizations?
Competition between standards
Joint working groups and memorandums
Only through courts
No harmonization
What methods are used for testing and validating standards?
Only theoretical
Pilot projects, laboratory testing
User surveys
No testing
What are examples of successful collaboration between ITU-T and ISO/IEC JTC1?
No examples
MPEG standards, H.26x
Only local initiatives
Competition instead of collaboration
How are standards adapted to rapidly changing technologies?
Prohibit innovations
Revisions and additions (e.g., H.265 → H.266)
Only every 10 years
No adaptation
What are the future prospects for standardization in multimedia?
Complete decentralization
Automation, AI analysis, global harmonization
Abandonment of standards
Only for commercial products
What standards are used for digital television?
PAL and NTSC (analog)
DVB-T, ATSC, ISDB
MP3 and WAV
Only proprietary
What technologies are used for signal encoding in digital broadcasting?
Only JPEG
MPEG-2, H.264/AVC, HEVC
Analog modulations
No compression
How does streaming work in digital television?
Through radio frequencies without the internet
Packetization and transmission over IP networks
Only via satellites
Downloading the entire file before playback
How is signal quality ensured in digital television?
Increasing the transmitter power
Error correction (FEC), adaptive bitrates
Only for HD
Ignoring interference
How is universal access to multimedia content on mobile devices ensured?
Only through SMS
Adaptive formats (HTML5, HLS) and CDN
Offline memory cards
Unified screen standard
What are the advantages of interactive television?
Only live broadcast
Video on demand, pause and rewind
No ads
Requires analog signal
How does digital radio broadcasting work?
Only AM/FM
Audio compression (AAC, MP3) and packet transmission
Through telephone lines
No encoding
What problems arise when developing multimedia applications for 5G?
Low speed
Real-time synchronization, QoS for AR/VR
Only for voice
No standards
What are the features of adaptive bitrate in mobile applications?
Fixed quality
Automatic resolution switching depending on network speed
Only for Wi-Fi
Increases server load
What technologies are the basis for streaming multimedia in mobile networks?
Only TCP
HLS, DASH, WebRTC
SMTP
Offline caching
How do multi-service networks handle multimedia traffic?
Only for voice
Packet prioritization (VoIP > email)
No QoS
Excluding video
How does a mediator facilitate interaction between components of a multimedia system?
Only for data storage
Unified APIs (e.g., WebRTC)
No standards
Requires direct connection
How does a mediator affect the performance of a multimedia application?
Slows down all processes
Optimizes data processing (buffering, caching)
No impact
Only for offline work
What is DVB-MHP and what is its role in interactive television?
Analog radio standard
Platform for interactive applications (guides, voting)
Type of antenna
Protocol for electronic mail
How can multimedia content be optimized for mobile applications?
Using uncompressed formats
Compression (WebP for images), lazy loading
Only for PCs
Ignoring screen resolution
What are the architectures of multimedia software?
Only client-server
P2P, cloud, hybrid
Analog
No architecture
How is buffering implemented in streaming services?
Downloading the entire file
Preloading segments for smooth playback
Only for audio
No buffering
What is transcoding and why is it necessary?
File deletion
Real-time format conversion for compatibility with devices
Traffic encryption
Only for text
What standards are used in mobile multimedia services?
Only MP3
3GPP, H.265, AAC
Analog
No standards
How does software interact with a CDN for content delivery?
Only via email
Redirecting requests to the nearest CDN server
Ignoring geolocation
No caching
How do standards ensure the reliability of multimedia connections?
By ignoring errors
Channel redundancy, FEC, QoS
Only for LAN
No guarantees
What functions does the network perform during the transmission of multimedia data?
Only routing
Traffic prioritization, congestion control
Content storage
No functions
How are GPS and multimedia integrated into mobile services?
Only for calls
Geotagging photos, AR navigation
No integration
Only for games
What are the principles of voice transmission over IP (VoIP)?
Analog lines
Compression (codecs G.711, Opus), RTP/RTCP
Only for local networks
No compression
How can multimedia compatibility be ensured across different platforms?
Only for iOS
Cross-platform standards (WebRTC, H.264)
Proprietary formats
No solution
What trends are observed in the development of mobile multimedia services?
Refusal of streaming
AR/VR, 5G, low-latency codecs
Only SMS
Analog return
What is content caching and how is it implemented in multimedia?
Data deletion
Storing copies on edge servers for faster access
Only in browsers
No benefit
What are the current trends in multimedia software development?
Only desktop
AI optimization, microservices, WebAssembly
16-bit graphics
No trends
What are QoS protocols and how are they applied in multimedia networks?
Only for email
Traffic prioritization (e.g., VoIP > torrents)
No configuration
Slowing down speed
How does multimedia message routing work?
Only through one server
Optimal path selection (CDN, Anycast)
No routing
Only for text
What is software and what is its role in multimedia systems?
Hardware
Level between OS and applications (e.g., WebRTC)
Only for databases
Not used
What does the concept of mobile multimedia include?
Only calls
Video, audio, streaming, AR on smartphones
Text
Offline files
How is multimedia streaming processing implemented in software?
Complete download
Buffering, "on-the-fly" transcoding
Only for photographs
No processing
How do standards affect the performance of a multimedia network?
Only slow it down
Optimization of encoding (e.g., H.265 vs H.264)
No impact
Only for audio
How can energy-efficient operation of multimedia on mobile devices be ensured?
Turning off the screen
Hardware acceleration, low bitrate codecs
Only Wi-Fi
No optimization
What is jitter and how does it affect the quality of multimedia?
Internet speed
Variation in packet delay (causes "jumps" in video)
Only for audio
No impact
What is digital broadcasting and how does it differ from analog?
Only for radio
Data transmission in digital format (better quality, compression)
Analog is cheaper
No difference
What is the future of digital broadcasting with the development of OTT services?
Disappearance
Hybrid models (broadcasting + internet), personalization
Only satellite
No changes
How is the electronic program guide (EPG) implemented?
Printed magazine
XML data about broadcasts + TV interface
Only for advertising
No standards
What problems arise when transmitting video over a network in high resolution?
Only cost
High bandwidth, low latency
Only for 4K
No problems
What technologies are used for adaptive streaming of video in digital broadcasting?
Only MP3
HLS, DASH, CMAF
Analog modulations
No adaptation
What is MPEG and how is it used in multimedia technologies?
Programming language
Group of compression standards (MP3, MPEG-4)
Only for photographs
Outdated
How is copyright protection implemented in digital television?
Only watermarks
DRM (Widevine, PlayReady)
Open access
No protection
How does IPTV technology work and how does it differ from DVB?
Only through an antenna
Transmission over IP networks (interactivity vs broadcasting)
No compression
Only for radio
What is OTT and how has it changed media consumption?
Only for TV
Content delivery over the internet (Netflix, YouTube)
Analog standard
No changes
What are the features of mobile digital television (DVB-H)?
Only for stationary TVs
Energy efficiency, adaptation to mobile networks
No compression
Does not work
What is HbbTV and what is its role in interactive services?
Type of antenna
Hybrid TV (broadcasting + internet)
Only for radio
Outdated
What is the role of 5G in the development of multimedia applications?
Only for calls
Low latency (1 ms), streaming 4K/8K
Analog standard
Not important
What is client-server architecture in the context of multimedia?
Only P2P
Centralized server (e.g., YouTube)
No network
Only offline
What audio coding standards are used in mobile multimedia applications?
Only WAV
AAC, Opus, AMR
No compression
Only MP3
How does transcoding help adapt content for different devices?
Removes data
Converts formats to match the device's resolution and codec
Only for text
No help
What components are included in the H.323 stack?
Audio only
Terminals, gateways, MCU
Browsers
Outdated
How does video telephony work over IP networks?
Only through analog lines
Video compression (H.264) and packet transmission
No codecs
Does not work
What approaches exist for routing multimedia content in networks?
Only static
CDN, Anycast, QoS routing
No optimization
Only for LAN
What is a CDN and how is it used for multimedia?
Type of antenna
Content Delivery Network (caching on edge servers)
Only for email
Not used
How is the security of multimedia messages ensured in network applications?
Only passwords
Encryption (SRTP), TLS
No protection
Only for text
What approaches exist for encrypting streaming video?
Only AES
DRM (Widevine), HTTPS, TLS
No encryption
Only for audio
What is latency and how does it affect multimedia transmission?
Internet speed
Latency (causes audio/video desynchronization)
Only for photographs
No impact
How are push notifications implemented for multimedia applications?
Only SMS
Through services (Firebase Cloud Messaging)
No internet
Only for email
Which APIs are most commonly used in the development of multimedia services?
Only SQL
WebRTC, FFmpeg, YouTube API
No APIs
Only for text
What video coding standard is used in Blu-ray?
MPEG-1
H.264/MPEG-4 AVC
JPEG
GIF
What are "metadata" in multimedia files?
Main video content
Additional information
