Palo Alto Networks

Blockchain CBDE Exam
BTA Certified Blockchain Developer - Ethereum (Page 4 )

Updated On: 7-Feb-2026

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QUESTION: 11

What's the correct scientific notation?

1 Ether = 10^18 wei, 10^9 Gwei, 10^3 Finney
1 Ether = 10^19 wei, 10^13 Gwei, 10^3 Finney
1 Ether = 10^16 wei, 10^13 Gwei, 10^3 Finney
1 Ether = 10^18 wei, 10^6 Gwei, 10^6 Finney

Answer(s): A

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QUESTION: 12

What are Private Keys used for?

To Protect the Public Keys by being cryptographically significant.
To Sign Transactions And To Derive an Address From.
To Generate An Address which can sign transactions.

Answer(s): B

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QUESTION: 13

Public Keys vs. Private Keys. Which statement is true?

The Public Key is for Signing Transactions, the Private Key must be given out to verify the signature.
The Private Key signs transactions, the Public Key can verify the signature.
The Private Key is to generate a Public Key. The Public Key can sign transactions, the address is here to verify the transactions.

Answer(s): B

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QUESTION: 14

Proof of Work (PoW) vs. Proof of Stake.

PoW is computationally intensive which requires lots of energy. On the other hand, miners earn straightforward a reward for mining a block and incorporating transactions.
PoW is better than PoS, because with PoS we increase the amount of energy spent on the network.
PoS is mining with specialized new hardware that has to be purchased with a stack of Ether in the network. Hence the Name: Proof of Stake, which derives from Stack.

Answer(s): A

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QUESTION: 15

Externally Owned Accounts:

can be destroyed using the selfdestruct keyword. This way all remaining ether will be sent to the receiver address, regardless if they have a fallback function or not.
are bound to a private key which is necessary to sign transactions outgoing from that account.
are logical opcodes running on the ethereum blockchain very similar to smart contracts.

Answer(s): B

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Viewing questions 16 - 20 out of 102 questions

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Anonymous Commented on July 27, 2025
super helpful
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quite helpful
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chetan Commented on July 27, 2025
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JAPAN

rey Commented on July 27, 2025
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Raja Commented on July 27, 2025
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Anonymous

rey Commented on July 27, 2025
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don Commented on July 27, 2025
challanging
Anonymous

rey Commented on July 27, 2025
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dennid Commented on July 27, 2025
they are really confusing
Anonymous

papu Commented on July 27, 2025
nice material
Anonymous

rey Commented on July 27, 2025
all the questions are refreshing
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Nayeh Commented on July 26, 2025
Thanks @Morales, Congratulation on passing exam.
Anonymous

Morales Commented on July 26, 2025
Hi @Nayeh My name is Morales and I am from Mexico. I passed this exam last week. I found the exam a bit hard or maybe I was not prepared for it. But majority of these questions are in the exam. I wish you best of luck with your exam.
Mexico

MAGICBUNNIEZ Commented on July 26, 2025
208:Based on the scenario described—where an application server's software is behaving abnormally by generating unexpected outbound traffic over random high ports—the most likely exploited vulnerability is: Memory Injection (e.g., Buffer Overflow or Code Injection) Why? Abnormal process behavior (unexpected network traffic) suggests execution of malicious code injected into the software’s memory. Random high ports are commonly used by malware for command-and-control (C2) communication or data exfiltration. Memory-based attacks (e.g., buffer overflows, ROP attacks) can hijack a legitimate process to execute attacker-controlled payloads. Why Not the Others? Race Condition Causes timing-related exploits (e.g., TOCTOU attacks) but does not typically generate network traffic. Would lead to logic errors, not outbound connections. Side Loading Involves loading malicious DLLs/libraries, but this usually happens at startup, not mid-execution. More common in Windows environments (e.g.,
UNITED STATES

MAGICBUNNIEZ Commented on July 26, 2025
194: To ensure the organization follows security best practices when transitioning an on-premises application to a cloud-based service, the security team should implement all of the listed controls, as they address different critical aspects of cloud security. However, if prioritizing the most fundamental requirement for a secure cloud deployment, the team should first ensure: 1. Virtualization and Isolation of Resources Why? Cloud environments rely on multi-tenancy, so virtualization and isolation prevent cross-tenant attacks (e.g., VM escapes, side-channel attacks). Best Practice: Use hypervisor security, container isolation, and micro-segmentation to enforce strict boundaries between workloads. Supporting Controls (Also Critical but Secondary to Core Isolation): 2. Network Segmentation Limits lateral movement if a breach occurs (e.g., separating frontend/backend tiers). However, isolation at the virtualization layer is more foundational in cloud environments. 3. Data Encryption
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Josh Commented on July 26, 2025
for Q483 The company needs to run a Windows containerized .NET 6 job every 10 minutes, with a runtime varying between 1 and 3 minutes, in the AWS Cloud, and do so MOST cost-effectively. Let's evaluate each solution: Create an AWS Lambda function based on the container image of the job. Configure Amazon EventBridge to invoke the function every 10 minutes. AWS Lambda for containers: Lambda now supports deploying functions as container images, including Windows containers. This is a serverless option, meaning you don't manage any servers. Runtime limits: AWS Lambda functions have a maximum runtime of 15 minutes. Since the job runs between 1 and 3 minutes, it fits well within this limit. Cost-effectiveness: Lambda's pricing model is based on duration and memory consumed, billed in millisecond increments. You only pay when your code is running. For a job running only 1-3 minutes every 10 minutes, this is incredibly cost-effective because you pay almost nothing for idle time. EventBridg
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Ash Commented on July 26, 2025
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CANADA

q Commented on July 26, 2025
helpful question
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stephen Commented on July 26, 2025
very helpful
Anonymous

u Commented on July 26, 2025
helped in prep
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Jay Commented on July 26, 2025
Looking good so far
Anonymous

rey Commented on July 26, 2025
reliable questionaires
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rey Commented on July 26, 2025
very interesting topics, this helped me a lot
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chatbot Commented on July 26, 2025
The questions offer a great help in preparation. These are related to topics in exam
Anonymous

prasanna Commented on July 26, 2025
The questions are very helpful after completing the study materials and before the exam! Thanks
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rey Commented on July 26, 2025
usable contents, very helpful
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rey Commented on July 26, 2025
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Suchi Commented on July 26, 2025
great content
Anonymous

Suchi Commented on July 26, 2025
Great material
Anonymous

mark Commented on July 26, 2025
amazing contents
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gm Commented on July 26, 2025
Question 123 - False - Reader accounts in Snowflake are designed for accessing and querying data shared by a provider, but they cannot extract that data for use outside of the Snowflake environment. They are primarily used for data consumption within Snowflake.
Anonymous

Atul Commented on July 26, 2025
Answer to Question 55 is A GAN as it is used for the data generation. Option C is not correct.
Anonymous

gm Commented on July 26, 2025
Q109 - False because owned by role not by user
Anonymous

Alex Commented on July 26, 2025
very good questions
ROMANIA

gm Commented on July 26, 2025
91 - Answer should be True AWS PrivateLink can be used to establish a secure, private connection between a customer's on-premise data center (via AWS Direct Connect) and Snowflake. This connection bypasses the public internet, enhancing security and reducing the risk of data exposure.
Anonymous

Amit Commented on July 26, 2025
Detailed and specific - stick to the foundational themes to test your knowledge and you will succeed
Anonymous

mark Commented on July 26, 2025
very informative
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gm Commented on July 26, 2025
Question 77: Answer should be all Bulk copy from an External Stage: This involves using the COPY INTO command to load data from files stored in external cloud storage locations (e.g., Amazon S3, Azure Blob Storage, Google Cloud Storage) into a Snowflake table. Continuous load using Snowpipe REST API: Snowpipe enables continuous data loading from staged files as soon as they become available. The Snowpipe REST API can be used to trigger the loading process for new files in an external stage. The Snowflake Web Interface (UI) data loading wizard: Snowsight, Snowflake's web interface, provides a user-friendly wizard that guides users through the process of loading data into tables, often from local files or staged files. Bulk copy from an Internal Stage: Similar to external stages, data can be bulk loaded from internal stages (storage locations within Snowflake) into tables using the COPY INTO command. Files can be placed in internal stages using commands like PUT.
Anonymous

gm Commented on July 26, 2025
Question 68: Explanation: INSERT: When inserting data into a table, Snowflake usually writes to new partitions, allowing other queries to access the existing data simultaneously. COPY: Similar to INSERT, the COPY command often writes to new partitions, enabling parallel execution with other operations. Why other options are incorrect: UPDATE: This command modifies existing data in a table, which requires locking the affected rows to prevent conflicts. This makes it a blocking operation, meaning other queries that need to access the same rows will have to wait until the UPDATE finishes. MERGE: Like UPDATE, the MERGE command modifies data in a table, requiring locks and thus being a blocking operation. It combines data from multiple sources into a target table, which can involve modifying existing rows.
Anonymous

mark Commented on July 26, 2025
very interesting
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