GFDSPM
Understanding Internet Protocols Quiz
This quiz is designed to test your knowledge of internet protocols, standards, and the technologies that facilitate data exchange over networks.
Whether you are a student, a professional, or simply curious about internet technologies, this quiz covers various aspects including:
- Protocols and their significance
- Differences between host and end systems
- Common access technologies
- Packet switching vs circuit switching
- Delays in network communication
What is a protocol?
It’s a formalisation of the messages that two entities exchange, and the actions that they should take on sending or receiving those messages, in order to achieve some action or data exchange over the a network
It develops and promotes voluntary internet standards, particularly in the higher layers of the internet protocol stack
Each packet may travel a different path between source and destination host.
List all the internet protocol you currently know about
Include the email protocols (IMAP4, POP3, SMTP), directory protocols (LDAP), Instant Messaging protocols (SIP-SIMPLE, IMPS), tele-communications protocols (SMS, EMS, MMS).
IEEE is the Institute of Electrical and Electronics Engineers. It is also a body that develops and publishes networking specifications. Generally in the lower layers of the Internet Protocol Stack.
Why are standards important for protocols
I. Three main reasons. One is inter-operability. A defined and accepted standard is something that developers (hardware or software) can work against and be sure that their products will work well with each other’s.
Ii. The second is economy of scale. If many vendor are providing implementation then it drives down the cost of obtaining some service.
Iii. They prevent ‘siloed solutions’. That is they prevent vendor specific solutions (this is also related a bit to inter-operability)
What is the difference between a host and an end system?
A. Not really a very good trick question! There’s no difference host and end system can be used interchangeably.
Phones and mobile voice traffic). They are now replaced by OMA (Open Mobile Alliance) and OMA2 (the equivalent for CDMA based mobile phones). You may have found others
What are the most common residential access technologies?
A. At the moment these are DSL (or ADSL) ‘Digital Subscriber Line’ or cable (often HFC ‘hybrid fibre coax’)
You may have found the GSM (the specifications body that initially wrote the specifications for mobile phones and mobile voice traffic). They are now replaced by OMA (Open Mobile Alliance
What are the main differences between packet switching and circuit switching?
Packet switching. Data is split into discrete chunks (packets) and moves through a mesh of links and routers. Each packet may travel a different path between source and destination host.
Circuit switching: Some dedicated path will exist between a host and a destination (effectively a circuit) all packets will travel on this ‘same’ route.
What is the difference between propagation delay and transmission delay? Which is the main cause of delay in a multi hop route? Why?
A. Transmission delay is the time it takes to write the bits of a packet onto a wire (or other physical media). Propagation delay is the time it takes a signal to propagate along a wire. Signals travel at in-the-order-of 108 m/s so often propagation delay is effectively 0. Transmission delay may be in the order of micro-seconds or milliseconds , I.e. Transmission time is longer than propagation time and therefore is the more important.
A. There’s no defined way. Usually, on the basis of location and an existing infrastructure, they’ll negotiate a connection to 2 (or more) ISPs independently and effectively become an IXP. Charging may be done at several levels e.g. Data throughput or just a fixed price service agreement!
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