Answer:
A mouse.
Explanation:
An input device can be defined as any device that is typically used for sending data to a computer system.
Generally, all of the output and input device of a computer are known as peripheral (external) devices and they provide data (informations) to the end users in various formats such as video, audio, texts, images etc.
Since input devices are peripheral (external) devices, they can be connected to the computer system wirelessly or through a wired-connection (cable).
Some examples of peripheral (external) devices are monitor, speakers, keyboard, printer, scanner, projector, mouse, etc.
A mouse is an input device that is designed and used to select specific menu options, drag and drop options and to draw something on screen.
Answer:
B.O(n).
Explanation:
Since the time complexity of visiting a node is O(1) in iterative implementation.So the time complexity of visiting every single node in binary tree is O(n).We can use level order traversal of a binary tree using a queue.Which can visit every node in O(n) time.Level order traversal do it in a single loop without doing any extra traversal.
Answer:
Please check the explanation.
Explanation:
The US education department mentioned that in 1900 there were only 10% of students enrolled in the schools, however by the end of 1992, the percentage increased by 85% and it became 95%. In 1930 1 million students were enrolled in university. And by 2012, it became 21.6 million. The teachers began to follow a new type of teaching, and the academics began to follow a special method for communique, education as well as for helping the students understand the concepts.
Though, after the 1980s the personal computer came into being in schools and colleges. Since then numerous versions of PC have originated in the marketplace as well as mobiles tracked by Smartphones, and now nearly 100% of people in the US have smartphones. Virtual reality, augmented reality, AI, Machine learning. etc. has cemented the way for the virtual classrooms. Also, each subject is now up with fruits and not just-food. The consequence is such a delightful setup of the Virtual schoolrooms in the entire US, and all over the ecosphere. The projectors, VR devices, AI applications for education, online classroom facility, Electronic version of chalkboards, and in fact everything is no sophisticated, and it is making not only teaching easy but learning as well. And the result is, students are ending up with better results, and teachers seem to be happier and more relaxed. And that is making school management satisfied as well.
Answer: Coaxial Cable got its name as "coaxial cable" as it has two physical layer of channel in same cable axis.
Explanation: Coaxial cable is the cable that is basically composed of copper and shield of other materials.They have two physical channels and having a insulating layer between them and the outer layer serving as the ground layer. Both the channel of physical layer have the same axis that why it is termed as "coaxial".These cables are commonly used in the cable televisions , sometimes in telephone line etc.
For each user who comes to your site the google analytics automatically capture the traffic source dimensions Source, Medium, Campaign name.
<u>Explanation:</u>
Source:
- There cannot be any reference to a website without an origin source.
- The source is basically the origin of your traffic such as a search engine (google) or a domain (ex: Twitter).
Medium:
- Every referral to a website also has a medium along with the source.
- examples are -: unpaid search, "cost per click", referral, mail.
Campaign name:
- The campaign Name is the name referring to the google ads campaign.
