30 Questions
What type of network topology has no central device for controlling the network?
Ring
Which network topology's security is considered low due to all nodes receiving the signal from the source?
Bus
What disadvantage is associated with the star network topology if the hub fails?
Whole network failure
What type of bandwidth is classified as high-speed?
Broadband
Which network topology allows easy addition and removal of parts?
Star
What is a common disadvantage associated with the bus network topology?
Low efficiency with increasing number of devices
What does Metcalfe's Law represent in computer networks and telecommunications?
The value of a network based on the number of people connected
In the formula f(x) = (n(n-1))/2, what does 'n' represent?
Number of people connected in the network
Why do we subtract 1 from 'n' in Metcalfe's Law formula?
To establish unique connections without self-connections
What happens if we do not divide by two in the Metcalfe's Law formula?
It doubles the count of possible connections
How many unique connections would there be in a network with 7 people connected?
14
What is the purpose of Metcalfe's Law in understanding network value?
To evaluate the scalability and potential reach of a network
What role do cellular and PCS telephone systems play in wireless technologies?
Divide the geographic area into cells
What is the main function of a modem in the context of telecommunications processors?
Convert digital signals to analog frequencies for transmission over telephone lines
How do wireless LANs function within an office or building?
Use radio signals to connect PCs to networks
What distinguishes a switch from a hub in internetwork processors?
Switches replicate data packets while hubs do not
In wireless technologies, what is the primary purpose of using communications satellites?
Serve as relay stations for communication signals
What is the key function of Bluetooth technology?
To enable short-range wireless connections between devices
What is the main advantage of digital network technologies over analog?
Faster transmission speed and lower error rates
What does interoperability refer to in the context of open systems?
Enabling end user applications using different computer systems and software packages
What is the primary function of middleware in the context of telecommunications?
Connecting two separate programs together
How do digital network technologies contribute to a more efficient business operation?
By reducing order processing delays and speeding up billing
In what way do open systems enhance connectivity among networked computers?
By allowing easy access and communication between computers
What is a key benefit that telecommunications networks offer businesses in terms of customer service?
Reducing order processing delays and improving cash flows
What is the main function of a router?
Routes data from one network to another network based on IP address
What is the role of a gateway in a network?
Serves as an entry and exit point to the network, converting packets from one protocol to another
What is the purpose of a multiplexer in a network?
Allows a single communications channel to carry simultaneous data transmissions from many terminals
Which network topology involves local processors sharing the same communication channel?
Bus
What is a significant disadvantage of the bus network topology?
Whole communication system goes down if the main cable breaks
Which function of network management involves surveying resources and traffic patterns to accommodate network growth?
Capacity Planning
Test your knowledge of various wireless technologies such as terrestrial microwave systems, communications satellites, cellular and PCS telephone systems. Learn about the transmission methods and relay systems used in these technologies.
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