IDS 200 Exam 1 Facebook
Which of the following statements about cryptography is correct?
A ciphertext is decrypted into a plaintext.
Which of the following is correct with regard to the striping technique in RAID?
A single disk failure can lead to data loss.
Regarding autosizing (the adaptive & responsive webpage design), which of the following is true?
All components of a webpage are accessible on any device.
Which of the following is correct?
Cache memory is faster than HDD.
Which one of the following is an example of database fields that has atomic data?
Country: United States.
Which of following attacks would be least likely to steal users' data?
Denial-of-service
Within a relational database table, a key field is needed to
Ensure no records are identical.
The main innovation in Facebook's Haystack system was:
Faster data retrieval by reducing disk access frequency.
What would be the probable consequences of replacing a database stored on hard disk drives (HDD) to one maintained in RAM?
Faster operation but more expensive hardware costs.
Facebook's multifactor authentication is designed to thwart an attacker who:
Has obtained your email account and password.
The followings are the benefits of using a decentralized system of servers for delivering content, EXCEPT:
Increase latency in data transmission.
To avoid capacity problems, what should Facebook do when the demand for photo uploads increases?
Increase the number of processors/servers
Which of the following is NOT part of a typical cloud computing system?
It has a centralized location.
Which of the following is correct with regard to the mirroring technique in RAID?
It provides data redundancy.
Joe lives in Chicago and wants to use "chicago" as his Facebook password. Which of the following is NOT correct?
It's a strong password because it includes a complete word.
Which of the following is one of the reasons why spam accounts are still found on Facebook?
It's easy to create new spam accounts when old ones are deleted.
John and Derek are friends on Facebook. John frequently likes and comments on Derek's posts. How will the EdgeRank algorithm respond to John's actions?
John will see more of Derek's posts.
Suppose you have a three-page text document stored on your laptop. Its data is most likely a few ______________.
Kilobytes
Using asymmetric encryption, Mary encrypts a message with her own private key and sends the ciphertext to Jane. What does Jane need to decrypt the ciphertext?
Mary's public key.
Which RAID technique prevents data loss from a single disk failure?
Mirroring
Regarding database operations, the isolation property of ACID means:
No database operations interfere with one another
With regards to data caching systems at Facebook, hot data will be stored in a storage like ___________ for fast access.
RAM
Relational database management systems use _____________ as the language for defining and manipulating data.
SQL
Suppose you received a malicious email with a message specifically addressing you by name. What type of security attacks was it?
Spear-phishing
The core difference between phishing and spear-phishing is:
Spear-phishing has more specific targets than phishing.
Document-based databases share common characteristics with Key-value pair databases, EXCEPT:
Store photos data
Which of the following statements about relational databases is true?
Tables are composed of rows and columns.
Which of the following statements about clickbait pages is NOT true?
They attract users by providing high quality content.
Which of the following statements is true about thick clients?
Thick clients run thick applications.
Regarding News Feed content, Facebook determines user preferences primarily by:
Tracking each individual user's actions.
In the context of big data, data flowing continuously into a system is an example of:
Velocity
When would it be a good idea to allow a database to break ACID principles?
When speed is more important than data integrity.
In the EdgeRank algorithm, which of the following factors will NOT affect how a friend's post ranks in your Facebook feed?
Who liked the post.
Regarding data caching systems at Facebook, your photos from ten years ago are treated as _____________ .
cold data
The data about data is also called _____________.
metadata