AWS Certified Solutions Architect – Professional Complete Solution 2022

AWS Certified Solutions Architect – Professional Complete Solution 2022 Data that is durable and sticks around after reboots/restarts/power cycles (Glacier/RDS) - Answer- Persistent Data Store Data that is temporarily stored and passed to another process or persistent data store (SQS/SNS) - Answer- Transient Data Store Data that is lost when stopped (EC2 instance store/Memcached) - AnswerEphemeral Data Store Measure of how fast we can read and write to a device (i.e. fast sports car) - AnswerIOPS Measure of how much data can be moved at a time (i.e. Dump truck). - AnswerThroughput What does the Consistency Model ACID stand for? - Answer- Atomic, Consistent, Isolated, Durable What does the Consistency Model BASE stand for? - Answer- Basically available, soft state, eventually consistent Once you initiate a Glacier Vault lock, you have ____ hrs to _________ the vault lock or ______ the lock. - Answer- 24, complete, abort What are some use cases for Instance Stores? - Answer- caches, buffers, work areas Why might you use an instance store volume over an EBS volume? - AnswerInstance store may provide better performance because it is directly attached vs EBS volume access resides over the network. Each subsequent EBS Snapshot is ____________. Meaning it only records the changes you've made since the previous snapshot which saves storage space. - Answer- incremental. An EFS can be mounted from on-premise ONLY if using ________ __________. - Answer- Direct Connect What is the alternative to using a direct connect to mount on premise to EFS? - Answer- EFS File Sync Agent What are the 4 types of Storage Gateway and describe each? - Answer- File Gateway - store objects in S3 via NFS/SMB Volume Gateway Stored Mode - Async replication to S3 Volume Gateway Cached mode - Primary data stored in S3, frequently accessed data cached on-prem Tape Gateway - use with existing backup software A secure, fully managed file collaboration service that can integrate with AD for SSO. It contains web, mobile, and native clients and is HIPAA, PCI, DSS, and ISO compliant. - Answer- Amazon WorkDocs Read Replicas support ___________ synchronization, which means data may be lagging behind slightly on some of your read nodes. - Answer- Asynchronous Multi-AZ supports __________ synchronization, which means data will be up-to-date with your master node. - Answer- Synchronous True/False: In the catastrophic event of a region failure, you can promote a Read Replica to a standalone DB and then enable Multi-AZ from there. - Answer- True DynamoDB feature which allows you to maintain ACID compliance to make coordinate all-or-nothing changes to multiple items both within and across tables. - Answer- DynamoDB Transactions (DynamoDB) When you want a fast query of attributes outside the primary key (without having to do table scan), what index type would you use? - Answer- GSI (Global Secondary Index) (DynamoDB) When you already know the partition key and want to quickly query on some other attribute, what index type would you use? - Answer- LSI (Local Secondary Index) Name features of Global Secondary Indexes (GSI's) - Answer- -Created any time -Different partition key -Different sort key -Only request attributes projected in index Name features of Local Secondary Indexes (LSI's) - Answer- -Must be created with table -Same partition key -Different sort key -Can request attributes not projected in index (auto-fetch) Refers to stores which allow queries of raw data without pre-processing. This lessens the time from data collection to data value and helps identify correlations between disparate data sets. - Answer- Data Lake Fully managed graph database which supports open graph API's for both Gremlin and SPARQL. - Answer- Neptune Which data store would you use if you wanted ultimate control over your DB and your preferred DB is not supported by RDS? - Answer- EC2 Which data store would you use if you wanted a traditional relational database for OLTP, one in which data is well-formed and structured as well as ACID compliant. - Answer- RDS Which data store would you use if your data is comprised of name/value pairs or is unpredictable and you desire in-memory performance with data persistence as well as dynamic scaling? - Answer- DynamoDB What data store would you use if you have massive amounts of data which are primarily centered around OLAP workloads? - Answer- Redshift What data store would you use if your relationships between your data objects is a major portion of your data's value? - Answer- Neptune What data store would you use if you require fast temporary stores for data which may be highly volatile? - Answer- Elasticache Name same features of Memcached - Answer- -Simplicity -Object caching -Scale out as demand changes (horizontal scaling) -Run multiple CPU cores and threads Name some features of Redis - Answer- -Advanced data types (lists, hashes, sets) -HIPAA Compliance -Clustering -HA True/False: You must initialize the storage blocks on volumes that were restored from SNAPSHOTS before you can access the block. - Answer- True True/False: You must initialize the storage blocks on newly created EBS volumes. - Answer- False (newly created EBS volumes receive their max performance upon creation) For EBS volumes, you are charged for ____________ storage. For EBS snapshots, you are charged only for ___________ storage. - Answer- Provisioned, consumed Because of the way that EC2 virtualizes disks, the ____ write operation to any location on an instance store volume performs more _______ than subsequent writes. - Answer- first, slowly True/False: Snowball might not be the ideal solution if your data can be transferred over the internet in less than one week. - Answer- True SaaS model in which the storage of tenant data is fully isolated from any other tenant data. - Answer- Silo Model. Continues.......