Fundamental Of Networking
English
Basic
Get ready for the Quiz 'Fundamental Of Networking' Wether its just for fun or you're to test your self knowledge. From beginners up to advanced ones are all welcome to play and have fun....
Description
30
Questions
30 sec
Per question
4:25
Average time
3.0
Contest Score
25
Participants
1. Some questions appear to use copyrighted material, such as question 7, which uses the following stock image: https://www.123rf.com/photo_98801753_stock-vector-abstract-futuristic-electronic-circuit-board-with-binary-code-neural-network-and-big-data-an-element.html
2. Question 8: Any of the devices here can be used to create a LAN (except arguably a Repeater, as it only extends the physical capabilities and doesn't fulfill the collision detection criteria).
3. Question 14: The answer actually depends on the layer model, which hasn't been specified in the question. For example, in OSI, a commonly used layer model, error recovery and flow control is mainly a responsibility of the Data Link Layer, using something like LAPB.
4. Question 21: The explanation describes the bus topology as using half duplex, however full duplex with e.g. two cables may also be used here.
5. Question 28: Cables can actually be longer than this, the damping/cross talk may just lead to decreased quality assuming the frequencies are not lowered.
However, in my own case some are free and some are copyrighted.
About the questions in my quiz all are very precise and clear for the participants to understand and all the question are not shuffled.
And as for the matter of @night_lemur's comment,question 2,3,4,5 all of their options have no contradiction or wrong specifications and you just judge a book by its cover why I said so is that you did not check the explanation of the right option.
Consequently I'm waiting for the honorable judges to evaluate the quiz.
Best of luck to all.
By the way, it appears I forgot to provide sources, so I'll do so now:
- All answers can be used to create LAN (except Repeater): [1]
- Error recovery and flow control in the Data Link Layer: [2]
- Full Duplex can be used for bus topology: [3][4]
- There are UTP CAT6 cables longer than 100m: [5]
Nonetheless, best of luck to you as well.
[1]: https://www.idp.net/sysinfo/networking.asp#2
[2]: https://en.wikipedia.org/wiki/OSI_model#Layer_2:_Data_Link_Layer
[3]: https://www.sciencedirect.com/topics/engineering/full-duplex
[4]: RS422 is an example of such a bus, https://expertdaq.com/en/faq/rs422-rs485-bus/
[5]: https://www.amazon.co.uk/Mr-Tronic-Ethernet-Network-Meters-Grey/dp/B07SQXZZYF
1. Q.8 of my quiz clearly stipulated thus; "Which device is mainly used to create a LAN?" and the answer there is "SWITCH". what you're talking about is component of a LAN so in my case the quiz is for a beginners(basics) level i couldn't go hard, and a matter of fact Switch is a layer two device and can be use with many other components to create a LAN but my question is that "which device is mainly used to create a LAN". router can't be used to purposely or mainly to create a LAN because its layer 3(three) device and it uses IP address while SWITCH is a layer 2(two) device it uses MAC address to offer communication between a given device and the peripheral such as end devices e.g. computer used MAC address. So lets see as to What is a LAN Switch?
A LAN Switch as the name implies is a device using switching hardware to speed-up the checking and forwarding of data packets between LANs. LAN Switch is functionally like a bridge, but its speed and performance is faster and better than a bridge.
Its of paramount to check this link as a reference.
[1].
https://www.idp.net/sysinfo/networking.asp#1
2. Going by the question 14 of my quiz stated thus; “which of these layers deals with relieble or unreliable delivery and error recovery and flow control”
Which is in the option I provided the correct answer is "transport layer".
Okay let me discriminate this to you which seems it perplexed you because they are intertwine and interwoven as well. I'm talking about the similarities between tansport layer and data links sublayer(logical link control) so let me get this right to you.
Data Link – combines packets into bytes and bytes into frames. Each frame has a header and a trailer. A header contains the source and destination MAC address. A trailer contains the Frame Check Sequence field, used for errors detection. The Data Link layer is divided into two sublayers:
Logical Link Control – used for flow control and error detection and
Media Access Control – used for hardware addressing and controlling the access method.
While the Transport – provides reliable or unreliable delivery and error recovery and flow control.
You have to take a cursory and a critical look to the logical link control sublayer of the data link layer and transport layer very well for you to discriminate them and make your self clear, as it implies in the question 14 of my quiz.
For a reference take the link below.
[2].
https://www.google.com/amp/s/www.webopedia.com/amp/quick_ref/OSI_Ls.asp
3. And as for No.4 in your comment which is"4 Question 21: the explanation describe the bus topology as using half duplex however full duplex with e.g two cable may be also be used here" whereby is not in total conformity to my description of the answer and is irrelevant to my question either, which in my quiz Question 21 stated thus; "in what type of network topology do all the computers directly tap unto the same cable" therefore as my answer option implies.
"Bus".
Here are some elaboration:
Bus topology uses one main cable to which all nodes are directly connected. The main cable acts as a backbone for the network. One of the computers in the network typically acts as the computer server.
Take this link as a reference.
[3].
https://study.com/academy/lesson/how-star-topology-connects-computer-networks-in-organizations.html#:~:text=Bus%20topology%20uses%20one%20main,a%20computer%20or%20peripheral%20device.
4. Finally as for my question 28 as well. The answer option is correct and clear.
"100 meters".
For your kind information The maximum length you can run Cat5, Cat5e, Cat6 and Cat6a cable is 100 meters or 328 feet. If you require a longer run, you will need to put an active component, such as a router, in-between the signals.
Check the below link fellow competitor.
[4]. https://www.showmecables.com/blog/post/discussing-cat5-length-limits#:~:text=The%20maximum%20length%20you%20can,%2C%20in-between%20the%20signals
1. Alright, if the focus the question would like to pose is which device is *most often* used to create (modern) LANs, then "Switch" could indeed be an acceptable answer. Do note, however, that your source [1] lists all of your answer options as devices with which a LAN can be created, so maybe the question's text (or the answers) should be changed to be less ambiguous.
2. Your source[2] unfortunately doesn't work, but I think the essence of your argument is that while the Data Link Layer is also responsible for error detection and flow control, "Data Link" is not an answer option and so there's no confusion. I agree with that, but I still think it would be better if the question said it's talking about OSI / IEEE 802, because the distinction you make between Logical Link Control and Media Access Control (as sublayers of Data Link) are only specified in IEEE 802, not in the OSI standard.[5][6]
3. Your source [3] and answer don't appear very relevant, as it only describes what a bus topology is but doesn't say anything about the issue at hand, which is that bus topologies aren't defined as having half-duplex links but may also use full-duplex link.
A better source for you would be the Wikipedia article[7] you apparently copied the explanation from.
However, I believe that the "half-duplex" part in the Wikipedia article isn't always true, because
a) The sources in the article don't say anything about (half-)duplex
b) I've already shown a type of bus with full-duplex exists, and here's another[8]
4. The source I've provided for my previous answer (the Amazon link) is actually not of a CAT6 cable, it apparently uses a different metal, I'm sorry for that. It's true that it's specified in the standard that such cables shouldn't exceed 100m, so you're right about this.
[5]: https://en.wikipedia.org/wiki/IEEE_802
[6]: https://ieeexplore.ieee.org/document/6847097 (This is the official standard)
[7]: https://en.wikipedia.org/wiki/Bus_network
[8]: http://fastbitlab.com/spi-bus-configuration-discussion-full-duplex-half-duplex-simplex/
I have found some discrepancies.
To the question:
1) "The Acronym SOHO stands for?", The inserted image is covered by copyright
(source: https://www.pinterest.it/pin/395050198578577486/
https://www.pinterest.it/pin/807762883147725906/ );
2) "What is the full meaning of W.A.N?", image is covered by copyright
(source:
https://www.123rf.com/photo_79551638_stock-vector-global-network-connection-world-wide-web-connection-of-lines-and-points-around-the-earth-.html ).
In addition, the inserted images are also seen poorly, the quality is poor.
This does not mean that the quiz is not educational, or that I did not like it. You could have done more and be more careful.
And as the matter of copyright infringement let me refer you to the golden rule of interpretation Title 17, Chapter 1, Section 107 of the U.S. code states that “the fair use of a copyrighted work, including such use by reproduction in copies for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship or research, is not an infringement of copyright.” But not all material is protected for your free use.
And as for the images quality once the question is disseminated the quality is of no essence.
Lastly, I made this quiz during Ramadan(fasting month for Islam religion followers) its of hard time for me to create even a single question and its explanation but barely manage to make this outstanding quiz.
Thanks and good luck to all.