What role does Dalvik play in Android development ?

Correct Answer: Adb is short for Android Debug Bridge It allows developers the power to execute remote shell commands Its basic function is to allow and control communication towards and from the emulator port

Correct Answer: There are many answers here: Reduce image sizes, remove unnecessary widgets, HTTP compression, put CSS at the top and script references at the bottom or in external files, reduce lookups, minimize redirects, caching, etc

Correct Answer: Canvas is an element that is used for the graphics for the web page It uses JavaScript to bring the graphics functionality live It allows easy way to draw the graphics and use different types of tools to create drawing on the web page Canvas is just a rectangular area that controls the pixel of every element that is used in the web page Canvas uses methods like paths, circles, etc The canvas element will be used as follows: The canvas element includes id, width and height settings and with the javascript it gets used like:

Correct Answer: Following are the New Media Elements are present in HTML5:

Correct Answer: The emulator lets developers ?play? around an interface that acts as if it were an actual mobile device They can write and test codes, and even debug Emulators are a safe place for testing codes especially if it is in the early design phase

Correct Answer: An Android Intent is an abstract description of an operation to be performed It can be used with startActivity to launch an Activity, broadcastIntent to send it to any interested BroadcastReceiver components, and startService(Intent) or bindService(Intent, ServiceConnection, int) to communicate with a background ServiceThe intent itself, an Intent object, is a passive data structure holding an abstract description of an operation to be performed Android provides many ways of storing data of an application One of this way is called Shared Preferences Shared Preferences allow you to save and retrieve data in the form of key,value pair In order to use shared preferences, you have to call a method getSharedPreferences() that returns a SharedPreference instance pointing to the file that contains the values of preferences

Correct Answer: When the computers on the network simply listen and receive the signal, they are referred to as passive because they don?t amplify the signal in any way Example forpassive topology - linear bus

Correct Answer: Research

Correct Answer: - Divide the data into sections - Add the sections together using 1's complement arithmetic - Take the complement of the final sum, this is the check sum

Correct Answer: A network that has only one entry and exit point.

Explanation:

A stub network has only one default path to non-local hosts and no outside network knowledge. Non-local stub network traffic uses a single logical path when traveling in and out of the network.

 

Stub networks are essentially local area networks (LAN) that either do not connect to the outside and relay data packets internally or are dead-end LANs that know of only one network exit. Stub networks may have multiple connections but use one path to single points of destination.

 

Hence, a stub network is a network that has only one entry and exit point.