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 

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 

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

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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