2020 BDS-C00 Actual Exam Dumps - BDS-C00 Practice Questions
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 BDS-C00 G Douomglpes PDF
Professional-Data-Engineer
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[ Total Questions: 10]
Implementing Cisco
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QUESTION 1 
Which statements are true of sequence numbers in Amazon Kinesis? (choose three) 
 
A. Sequence numbers are assigned by Amazon Kinesis when a data producer calls PutRecords 
operation to add data to an Amazon Kinesis stream 
B. A data pipeline is a group of data records in a stream. 
C. The longer the time period between PutRecord or PutRecords requests, the larger the sequence 
number becomes. 
D. Sequence numbers are assigned by Amazon Kinesis when a data producer calls PutRecord 
operation to add data to an Amazon Kinesis stream 
 
Answer: ACD 
Explanation: 
Sequence numbers in amazon Kinesis are assigned by Amazon Kinesis when a data producer 
calls PutRecord operation to add data to an Amazon Kinesis stream. Sequence numbers are 
assigned by Amazon Kinesis when a data producer calls PutRecords operation to add data to an 
Amazon Kinesis stream. Sequence numbers for the same partition key generally increase over 
time.The longer the time period between PutRecord or PutRecords requests, the larger the 
sequence number becomes. 
Reference: http://docs.aws.amazon.com/streams/latest/dev/working-with-kinesis.html 
 
 
QUESTION 2 
How are Snowball logs stored? 
 
A. in a JSON file 
B. in a SQLite table 
C. in a plaintext file 
D. in an XML file 
 
Answer: C 
Explanation: 
When you transfer data between your data center and a Snowball, the Snowball client generates 
a plaintext log and saves it to your workstation. 
Reference: http://docs.aws.amazon.com/snowball/latest/ug/using-client.html 
 
 
QUESTION 3 
How do you put your data into a Snowball? 
 
A. Mount your data source onto a workstation in your datacenter and then use this workstation to 
transfer data to the Snowball. 
B. Connect your data source to the Snowball and then press the "import" button. 
C. Mount your data source onto the Snowball and ship it back together with the appliance. 
D. Connect the Snowball to your datacenter and then copy the data from your data sources to the 
appliance via FTP. 
 
Answer: A 
Explanation: 
To put your data into a Snowball, you mount your data source onto a workstation in your 
datacenter and then use this workstation to transfer data to the Snowball.  
Reference: http://docs.aws.amazon.com/snowball/latest/ug/receive-appliance.html 
 
                                                                                
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QUESTION 4 
Kinesis Partition keys are unicoded strings with a maximum length of (choose one) 
 
A. 256 bytes 
B. 128 bytes 
C. 512 bytes 
D. 1024 bytes 
 
Answer: A 
Explanation: 
Kinesis Partition keys are unicoded strings with a maximum length of 256 bytes 
Reference: http://docs.aws.amazon.com/streams/latest/dev/working-with-kinesis.html 
 
 
QUESTION 5 
Identify a factor that affects the speed of data transfer in AWS Snowball. 
 
A. Transcoder speed 
B. The speed of the AGP card 
C. Local network speed 
D. The speed of the L3 cache 
 
Answer: C 
Explanation: 
The Snowball client can be used to estimate the time taken to transfer data. Data transfer speed 
is affected by a number of factors including local network speed, file size, and the speed at which 
data can be read from local servers. 
Reference: https://aws.amazon.com/importexport/faqs/ 
 
 
QUESTION 6 
How can AWS Snowball handle petabyte-scale data migration? 
 
A. Data is sent via a shipping container, pulled by a semi-trailer truck. 
B. Data is sent compressed via a high speed network connection. 
C. Data is sent via a physical appliance sent to you by AWS. 
D. Data is sent encoded (forward error correction) via a high speed network connection. 
 
Answer: C 
Explanation: 
Snowball uses secure appliances to transfer large amounts of data into and out of the AWS 
cloud; this is fast and cheaper than high-speed Internet. 
Reference: https://aws.amazon.com/snowball/ 
 
 
QUESTION 7 
The maximum size of a Kinesis data blob, the data payload before Base64 encoding is? (choose 
one) 
 
A. Five megabytes 
B. Two megabytes 
C. One kilobyte 
                                                                                
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D. One megabyte 
 
Answer: D 
Explanation: 
The maximum size of a Kinesis data blob, the data payload before Base64 encoding is one 
megabtye 
Reference: http://docs.aws.amazon.com/streams/latest/dev/working-with-kinesis.html 
 
 
QUESTION 8 
The Snowball client uses a(n) ____ to define what kind of data is transferred between the client's 
data center and a Snowball. 
 
A. schema 
B. JSON configuration file 
C. interface 
D. XML configuration file 
 
Answer: A 
Explanation: 
The Snowball client uses schemas to define what kind of data is transferred between the client's 
data center and a Snowball. The schemas are declared when a command is issued. 
Reference: http://docs.aws.amazon.com/snowball/latest/ug/using-client.html 
 
 
QUESTION 9 
An AWS Snowball appliance includes a(n) ____ network connection to minimize data transfer 
times. 
 
A. 10GBaseT 
B. 1000BaseT 
C. 40GBaseT 
D. Infiniband 
 
Answer: A 
Explanation: 
An AWS Snowball appliance has a 10GBaseT network connection (both RJ45 as well as SFP+ 
with either a fiber or copper interface) to minimize data transfer times. This allows the Snowball 
appliance to transfer up to 80 terabytes of data from a data source to the appliance in about a 
day, plus shipping time. 
Reference: https://aws.amazon.com/snowball/details/ 
 
 
QUESTION 10 
The job management API for AWS Snowball is a network protocol based on HTTP that uses a(n) 
____ model. 
 
A. RPC 
B. MPI 
C. publish/subscribe 
D. RMI 
 
Answer: A 
                                                                                
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Explanation: 
The job management API for AWS Snowball is a network protocol based on HTTP. It uses JSON 
(RFC 4627) documents for HTTP request/response bodies and is an RPC model, in which there 
is a fixed set of operations, and the syntax for each operation is known to clients without any prior 
interaction. 
Reference: http://docs.aws.amazon.com/snowball/latest/api-reference/api-reference.html 
 
 
QUESTION 11 
Which statements are true about re-sharding in Amazon Kinesis? 
 
A. The shard or pair of shards that result from the re-sharding operation are referred to as child 
shards. 
B. When you re-shard, data records that were flowing to the parent shards are rerouted to flow to the 
child shards based on the hash key values that the data record partition keys map to. 
C. The shard or pair of shards that the re-sharding operation acts on are referred to as parent 
shards. 
D. After you call a re-sharding operation, you do not need to wait for the stream to become active 
again. 
 
Answer: ABC 
Explanation: 
Kinesis Streams supports re-sharding which enables you to adjust the number of shards in your 
stream in order to adapt to changes in the rate of data flow through the stream. The shard or pair 
of shards that the re-sharding operation acts on are referred to as parent shards. 
The shard or pair of shards that result from the re-sharding operation are referred to as child 
shards. 
After you call a re-sharding operation, you need to wait for the stream to become active again. 
When you re-shard, data records that were flowing to the parent shards are rerouted to flow to 
the child shards based on the hash key values that the data record partition keys map to.  
Reference: http://docs.aws.amazon.com/streams/latest/dev/working-with-kinesis.html 
 
 
QUESTION 12 
In AWS Data Pipeline, an activity is (choose one) 
 
A. A pipeline component that defines the work to perform 
B. The database schema of the pipeline data 
C. A set of scripts loaded at run time 
D. A read/ write event from the primary database 
 
Answer: A 
Explanation: 
Reference: 
http://docs.aws.amazon.com/datapipeline/latest/DeveloperGuide/dp-managing-pipeline.html 
 
 
 
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