Answer:
t= 8.7*10⁻⁴ sec.
Explanation:
If the signal were able to traverse this distance at an infinite speed, the propagation delay would be zero.
As this is not possible, (the maximum speed of interactions in the universe is equal to the speed of light), there will be a finite propagation delay.
Assuming that the signal propagates at a constant speed, which is equal to 2.3*10⁸ m/s (due to the characteristics of the cable, it is not the same as if it were propagating in vaccum, at 3.0*10⁸ m/s), the time taken to the signal to traverse the 200 km, which is equal to the propagation delay, can be found applying the average velocity definition:
If we choose x₀ = 0 and t₀ =0, and replace v= 2.3*10⁸ m/s, and xf=2*10⁵ m, we can solve for t:
⇒ t = 8.7*10⁻⁴ sec.
Answer:
(config)# enable password secret
(config)# enable secret Encrypted_Password
(config-line)# password secret
(config)# enable secret Secret_Password
(config)# service password-encryption
Explanation:
To prevent all configured passwords from appearing in plain text in configuration files, an administrator can execute the service password-encryption command. This command encrypts all configured passwords in the configuration file. For more: https://ccnav7.net/what-command-will-prevent-all-unencrypted-passwords-from-displaying-in-plain-text-in-a-configuration-file-2/
Answer:
Option A- Reference materials
Explanation:
Reference Materials A digital reference library that provides more than 600 high-quality reference books from the world's leading publishers to be searched online by data points and trends
1. Less picture less distraction, but where to put pictures ? At the start of your presentation just to initially get the attention of the audience.
2. Use bullets for texts, never use paragraphs. Use short text or even words only which captures the subject of the presentation.
3. In conjunction with point 1. Use less animations as well. Especially for formal presentations
Additionally : Make sure to know your audience, for professionals, make the presentations short and precise. For much informal audiences you can be playful but always keep in mind not to overshadow the attention from the speaker.
