IT Questions and Answers :)

Friday, August 2, 2019

Which of these translates domain names into IP addresses?

Which of these translates domain names into IP addresses?

  • DHCP
  • FTP
  • TCP/IP
  • DNS 


EXPLANATION

DNS
Specialized computers called root servers store the IP addresses of each Top Level Domain's registries. Therefore, the first stop that the DNS makes when it resolves, or translates, a domain name is at its associated root server. From there, the requested domain name is sent along to a Domain Name Resolver, or DNR.

 

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What option do you tap on Android 6.0 Marshmallow to enable Developer Options?

What option do you tap on Android 6.0 Marshmallow to enable Developer Options?

  • Enable Developer Mode
  • Kernel Version
  • USB Debugging
  • Build Number 

What option do you tap on Android 6.0 Marshmallow to enable Developer Options?

EXPLANATION

Enable Developer Options In Android 6.0 Marshmallow

1. Pull down on the notifications shade and open the Settings app. You can also achieve the same thing from the app drawer if you so wish.
2. Scroll all the way down and tap on ‘About phone.’
3. Now scroll down again and you’ll see an entry labelled ‘Build number.’ Keep on tapping till you see a prompt that says ‘You are now a developer!’
4. Go back to the Settings app, and you’ll see a new entry labelled ‘Developer options’ right above ‘About phone.’ Tap on it and play around with it to your heart’s desire.


 

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Which of the following layers is layer 4 in the OSI model?

Which of the following layers is layer 4 in the OSI model?

  • Transport
  • Physical
  • Network
  • Application 

EXPLANATION


Transport (Layer 4)
OSI Model, Layer 4, provides transparent transfer of data between end systems, or hosts, and is responsible for end-to-end error recovery and flow control. It ensures complete data transfer. Layer 4 Transport examples include SPX, TCP, UDP.
Sep 24, 1999

 

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What does the E in ESXi stand for?

What does the E in ESXi stand for?

  • Evolution
  • Elastic
  • Enterprise
  • Electronic 
What does the E in ESXi stand for?

EXPLANATION

After version 4.1 (released in 2010), VMware renamed ESX to ESXi. ESXi replaces Service Console (a rudimentary operating system) with a more closely integrated OS. ESX/ESXi is the primary component in the VMware Infrastructure software suite. The name ESX originated as an abbreviation of Elastic Sky X

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Do you need a special crossover cable when connecting two auto MDI-X devices?

Do you need a special crossover cable when connecting two auto MDI-X devices?

  • Sometimes, depends on equipment manufacturer
  • Yes
  • Yes, CAT5E UTP is needed
  • No

Do you need a special crossover cable when connecting two auto MDI-X devices?

EXPLANATION

 A medium dependent interface (MDI) describes the interface (both physical and electrical/optical) in a computer network from a physical layer implementation to the physical medium used to carry the transmission. Ethernet over twisted pair also defines a medium dependent interface crossover (MDI-X) interface. Auto MDI-X ports on newer network interfaces detect if the connection would require a crossover, and automatically chooses the MDI or MDI-X configuration to properly match the other end of the link.

To
From
MDI MDI-X Auto MDI-X
MDI crossover straight any
MDI-X straight crossover any
Auto MDI-X any any any

 

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An organization wants to use a vendor SaaS application but is concerned about the lack of cloud security. What type of cloud architecture would be the most appropriate?

An organization wants to use a vendor SaaS application but is concerned about the lack of cloud security. What type of cloud architecture would be the most appropriate?

  • Private
  • Community
  • Hybrid
  • Public 
An organization wants to use a vendor SaaS application but is concerned about the lack of cloud security. What type of cloud architecture would be the most appropriate?
 

EXPLANATION

Private cloud is a type of cloud computing that delivers similar advantages to public cloud, including scalability and self-service, but through a proprietary architecture



Private clouds are often deployed when public clouds are deemed inappropriate or inadequate for the needs of a business. For example, a public cloud might not provide the level of service availability or uptime that an organization needs. In other cases, the risk of hosting a mission-critical workload in the public cloud might exceed an organization's risk tolerance, or there might be security or regulatory concerns related to the use of a multi-tenant environment. In these cases, an enterprise might opt to invest in a private cloud to realize the benefits of cloud computing, while maintaining total control and ownership of its environment. 

 

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What was the first graphical computer game implemented on a computer?

What was the first graphical computer game implemented on a computer?

  • Pong
  • Pac-Man
  • Chess
  • Baby 
What was the first graphical computer game implemented on a computer?


EXPLANATION

The first commercially available video game, Pong (Atari 1973), was introduced 11 years after Spacewar!
Pong is a simple concept that has turned out to be surprisingly durable even though the graphics are simply white rectangles on a black background. In the beginning, Pong was placed at entertainment venues, markets, and fun fairs, next to mechanical pastimes and as a supplement to these. This is the same kind of place where the game Space Invaders (Taito 1977) was also introduced. Space Invaders defines most of the basic parameters of what I call the classical action game: A player controls an object/an actor against some enemies; a score is kept; the game is real-time and requires fast reflexes; the player has a fixed amount of lives (typically three); the game is based on successive levels of increasing difficulty; the game (or just the title) places the player’s action as part of a minimal narrative.
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