Performance Navigation and Memory MCQ

Test your knowledge with important Performance Navigation and Memory MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Performance Navigation and Memory MCQs on Bissoy. Bissoy App

• Which of the following gives the high level breakdown of memory usage?
  ক

  about:memory

  খ

  memory

  গ

  about-memory

  ঘ

  about::memory
• What can be done to monitor the memory usage?
  ক

  Profiling

  খ

  Sequencing

  গ

  Serializing

  ঘ

  Serializing & Sequencing
• What does the usedJsHeapSize property indicate?
  ক

  Amount of memory used

  খ

  Amount of memory unused

  গ

  Amount of memory used & unused

  ঘ

  Amount of memory required
• What is the purpose of garbage collection?
  ক

  Removes object with many reference

  খ

  Removes object with reference

  গ

  Removes object with invalid reference

  ঘ

  Removes object with no reference
• What is the command to access the Heap size limit?
  ক

  performance.memory. SizeLimit

  খ

  performance.memory. jsHeapSizeLimit

  গ

  jsHeapSizeLimit

  ঘ

  performance.jsHeapSizeLimit
• What is the function of the memory object?
  ক

  Gets unused memory details

  খ

  Shows optimization

  গ

  Gets memory usage

  ঘ

  Memory optimization
• What is a heap in JavaScript?
  ক

  Collection of Java objects

  খ

  Collection of JavaScript objects

  গ

  Collection of memory usage values

  ঘ

  Collection of data stored in memory
• How many properties are available in a memory object?
  ক

  1

  খ

  2

  গ

  3

  ঘ

  4
• Where does the DNS Lookup direct to ?
  ক

  Browser

  খ

  Client

  গ

  Server

  ঘ

  DNS Server
• What does the constant TYPE_BACK_FORWRD indicate?
  ক

  Navigation via browser history

  খ

  Navigation via user request

  গ

  Navigation via URL

  ঘ

  Navigation via load operation
• What is the purpose of the constant TYPE_RELOAD?
  ক

  Reload performed

  খ

  Reload not performed

  গ

  Reload must be performed

  ঘ

  Reload may be performed
• How many constant values can the property type be represented?
  ক

  2

  খ

  3

  গ

  4

  ঘ

  5
• How can one access the redirectCount property?
  ক

  navigation.redirectCount

  খ

  performance.navigation.redirectCount

  গ

  performance.redirectCount

  ঘ

  redirectCount
• Where does the DNS reply go to in a single HTTP redirect?
  ক

  Browser

  খ

  Client

  গ

  Server

  ঘ

  DNS Server
• Why are HTTP redirects significant?
  ক

  TCP connection available

  খ

  Complete roundtrip absent

  গ

  Complete roundtrip present

  ঘ

  TCP connection not available
• How many read-only attributes are present in the navigator object?
  ক

  1

  খ

  2

  গ

  3

  ঘ

  4