A company is building a two-tier web application to serve dynamic transaction-based content. The data tier is leveraging an Online Transactional Processing (OLTP) database. What services should you leverage to enable an elastic and scalable web tier?
A. Elastic Load Balancing, Amazon EC2, and Auto Scaling
B. Elastic Load Balancing, Amazon RDS with Multi-AZ, and Amazon S3
C. Amazon RDS with Multi-AZ and Auto Scaling
D. Amazon EC2, Amazon DynamoDB, and Amazon S3
Answer: A. Elastic Load Balancing, Amazon EC2, and Auto Scaling
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Which of the following statements are correct?
a. When creating a Random object, you have to specify the seed or use the default seed. b. If two Random objects have the same seed, the sequence of the random numbers obtained from these two objects are identical. c. The nextInt() method in the Random class returns the next random int value. d. The nextDouble() method in the Random class returns the next random double value.
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Answer the following statement true (T) or false (F)
The MAC address of a node is a unique 48-bit identifying address that comes from the NIC.
Answer the following statement true (T) or false (F)
Which of the following is not true about campus networks?
a. Have multiple LANs connected b. Interconnected with routers c. Interconnected with switches d. Multiple buildings that are far apart