Cache Interview Questions Part1
(Cache MCQ)

Question No:-1 A cache is a ______________. (i)Data storage format (ii)Small and Fast memory (iii)Copy of data (iv)Data Backup Answer:-(ii)Small and Fast memory Question No:-2 In which type of cache, application directly interacts with database for data that is not available in the cache? (i)Local Cache (ii)Cache-aside (iii)Write Through Cache (iv)Read Through Cache Answer:- Answer is (ii)Cache-aside Question No:-3 A cache has 1024 blocks and each block can contain 1024 bits of data. What is the size of the cache? (i)0.25 MB (ii)0.125 MB (iii)1 MB (iv)0.5MB Answer:-(ii)0.125 MB Question No:-4 (4)Which of the following in a cache address, specifies the exact location in the cache line where the requested data exists? (i)Block Number (ii)Block Offset (iii)Block Index (iv)Tag Answer:-(ii)Block Offset Question No:-5 (5)A byte addressable direct-mapped cache with 1024 blocks/lines, and with each block are having 8 32-bit words. How many bits are required for block offset, assuming a 32-bit address? (i)10 (ii)15 (iii)3 (iv)5 Answer:-(iv)5 Question No:-6 In which type of cache, application treats cache as the main data store and reads data from it and writes data to it? (I) Read Through/Write Through Cache (II) Cache-aside (i)I (ii)None of the options mentioned (iii)II (iv)I & II Answer:- (i)I Question No:-7 Which type of caching can be used to cache the contest registration page in a website, to reduce the time taken to serve the page for the users? (i)Web Cache (ii)Data Cache (iii)Browser Cache (iv)Application Cache Answer:-(iv)Application Cache Question No:-8 Which type of cache reference locality aims at designing cache to store the entire block near the Recently Referenced Data? (I) Temporal Locality (II) Spatial Locality (1)I (2)I & II (3)None of the options mentioned (4)II Answer:-(4)II Question No:-9 A web page displays 10 items per page and has pagination enabled. What would be the recommended way to enable efficient paging? (i)Perform in-memory paging (ii)Use Temporal Cache (iii)Use Spatial Cache (iv)Hit the database every time user moves to next page Answer:-(iii)Use Spatial Cache Question No:-10 Which type of cache reference locality aims at designing cache to store "Recently Referenced Data" assuming that the same data will be requested frequently? (1)Temporal Locality (2)Either of the options mentioned (3)Spatial Locality (4)None of the options mentioned Answer:-(1)Temporal Locality Question No:-11 When a computer processor does not gets a data item that it requires in cache, then the problem is known as _________. (i)Write Miss (ii)Cache Read (iii)Cache Hit (iv)Cache Miss Answer:-(iii)Cache Hit Question No:-12 Which type of cache is recommended to store user preferences for an application with several 100's of concurrent users? (i)Near Cache (ii)On Demand Cache (iii)Data Cache (iv)Primed Cache Answer:-(ii)On Demand Cache Question No:-13 Which of the following is used to determine, if a piece of data in cache needs to be written back to cache? (i)Valid Bit = 0 (ii)Dirty Bit = 1 (iii)Valid Bit = 1 (iv)Dirty Bit = 0 Answer:-(ii)Dirty Bit = 1 Question No:-14 Cache Performance or Average Memory Access time (AMAT) depends on which of the following? (i)All options mentioned (ii)Time taken to get data from cache (iii)Frequency of Cache Miss (iv)Time taken to get data from main memory Answer:-(i)All options mentioned Question No:-15 Caching Technique where cache is populated the first time a certain piece of data is requested is called _________. (i)Local Population (ii)Lazy Loading (iii)Cache aside (iv)Upfront Loading Answer:-(ii)Lazy Loading Question No:-16 Which of the following is true about the cache? (i)Line size < Block size (ii)None of the options mentioned (iii)Line size == Block size (iv)Line size > Block size Answer:-(iii)Line size == Block size Question No:-17 Which Cache would be the best place to cache DNS data? (i)Application (ii)Browser (iii)Proxy (iv)Data Answer:-(iii)Proxy Question No:-18 For a cache look up to be a Hit, which of the following must be true? (i)Tag==Block Number and Valid Bit = 0 (ii)Tag==Block Number and Valid Bit = 1 (iii)Tag==Block Offset and Valid Bit = 0 (iv)Tag==Block Offset and Valid Bit = 1 Answer:-(ii)Tag==Block Number and Valid Bit = 1 Question No:-19 While using a Write Back cache, which of the following policies needs to be abided? (i)No Write Allocate (ii)Write Allocate (iii)Write Around (iv)Write Through Answer:-ii)Write Allocate Question No:-20 Line size in a cache is recommended to be a power of 2. (i)True (ii)False Answer:-(i)True Question No:-21 Cache Performance or Average Memory Access time (AMAT) depends on which of the following? (i)Time taken to get data from cache (ii)Time taken to get data from main memory (iii)All options mentioned (iv)Frequency of Cache Miss Answer:-(iii)All options mentioned Question No:-22 Which Caching Topology is recommended for a read intensive distributed application? (i)Local Cache (ii)Near Cache (iii)Partitioned (iv)Replicated Answer:-(iv)Replicated Other Important Questions What is Caching and why we use cache Which Caching Topology is recommended for a read intensive distributed Which of the following is true about a well designed cache Which of the following Cache Eviction techniques consider Locality Which of the following types of data exhibits Spatial Locality?