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a. try block followed by catch b. try block followed by finally c. try block followed by catch block and then finally d. try block without catch or finally block
Ans. try block without catch or finally block
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try block followed by catch block and then finally
try block without catch or finally block
Q1086. Which of the following is not the difference between Singleton and Static class ( Class with static members only ) ?
a. Only one object can be created for Singleton class whereas No objects are created for static class. b. Singleton class instance is initiated using new keyword whereas static class instance is created using static method. c. Singleton class can be serialized whereas Static class cannot be. d. Singleton Class can participate in runtime Polymorphism whereas Static class cannot.
Ans. Singleton class instance is initiated using new keyword whereas static class instance is created using static method.
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Q1089. Which of the following do you think is the primary reason you would never use a static class even the application doesn't need multiple requests or threads ?
a. Serialization
b. Runtime Polymorphism
c. Lazy Loading
d. Memory
Ans. Runtime Polymorphism
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Q1092. What is a Sequence File?
a. A Sequence File contains a binary encoding of an arbitrary number of homogeneous writable objects. b. A Sequence File contains a binary encoding of an arbitrary number key-value pairs. Each key must be the same type. Each value must be of same type. c. A Sequence File contains a binary encoding of an arbitrary number of heterogeneous writeable objects. d. A Sequence File contains a binary encoding of an arbitrary number of Writable Comparable objects, in sorted order.
Ans. A Sequence File contains a binary encoding of an arbitrary number key-value pairs. Each key must be the same type. Each value must be of same type.
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a. One Key and One Value b. Multiple Keys and Multiple associated Values c. Multiple Keys and One associated values with each d. One key and associated values.
Ans. One key and associated values.
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Ans. RI or Reference Implementation is a sample implementation provided for the API's / Specs, usually by their developers. This is usually a part of API documentation.
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Q1097. Explain Application / Server architecture being used in your project ?
or
Explain your project architecture ?
Ans. We are using cluster of Web servers and Application servers. Load Balancer is used to manage the load between them. Down the layer we have middleware server and then DB server to access database.
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Q1098. How do you monitor the server resources if inadvertently high traffic is reported ?
Ans. We use SAR command for that purpose. We also have GUI system monitoring tool to keep real time check of requests, load and memory usage.
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Q1099. Have you ever faced any problem due to caching?
Ans. Yes , sometime we receive issues related to outdated pages being rendered to the user. In those cases we clear the cache and then try to investigate the reason for that. Sometime the issue is due to comparatively high refresh interval. In those cases we reduce the cache refresh interval.
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Ans. It is a Design Pattern that facilitates loose coupling by sending the dependency information ( object references of dependent object ) while building the state of the object. Objects are designed in a manner where they receive instances of the objects from other pieces of code, instead of constructing them internally and hence provide better flexibility.
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Ans. The goal of a synchronised block is to achieve mutual exclusion i.e at one time, the segment of the code should be executed by single thread only and hence the lock needs to be retrieved before executing the segment and then released.
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Which of the following is not possible ?
