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質問 1：
Which of the following sources provide block events?
A. Ordering service
B. CouchD
C. Peers
D. Membership service
正解：C
解説: (Pass4Test メンバーにのみ表示されます)
質問 2：
When creating a gRPC connection to the Gateway peer using Transport Layer Security (TLS), what information must be supplied by the client application?
A. The client private key and the public key of the TLS certificate authority.
B. The endpoint address of the Gateway peer and the certificate of the TLS certificate authority.
C. A common connection profile that includes the Gateway peer address and TLS certificate.
D. The Gateway peer host name, service port number, and a TLS host name override.
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
質問 3：
Which are the transaction steps that are managed by the Fabric gateway service?
A. Finding a nonce for a pre-image of a hash function for mining.
B. Evaluate, endorse, submit, and get commit status.
C. Collect transactions into a block and eliminating invalid transactions.
D. Realizing a distributed verifiable random function for leader election.
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
質問 4：
Which channel feature allows organizations to run different versions of Hyperledger Fabric on their peer nodes?
A. Channel capabilities
B. Anchor peers
C. Endorsement policies
D. Consensus protocols
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 5：
What should be taken into account at implementing efficient CouchDB queries from chaincode?
A. Using OLAP (Online analytical processing) and Cube functionality of CouchDB is enough to implement efficient queries.
B. Using indexes, focusing on simple queries and avoiding full index scans like with operators $or, $in and
$regex.
C. Using advanced relational algebra and SQL query language options of CouchDB is enough to implement efficient queries.
D. Using complex indexes for certain columns is enough even if full scan operators like $or, $in and $regex are used.
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
質問 6：
For an endorsed transaction, the gateway service forwards the transaction to the ordering service, which orders it with other endorsed transactions and then completes what?
A. Sends the transaction to the endorsement phase.
B. Broadcasts the transaction to all peers in the channel.
C. Sends the transaction to the validation phase.
D. Packages all endorsed transactions into a block.
正解：D
解説: (Pass4Test メンバーにのみ表示されます)
Which of the following sources provide block events?
A. Ordering service
B. CouchD
C. Peers
D. Membership service
正解：C
解説: (Pass4Test メンバーにのみ表示されます)
質問 2：
When creating a gRPC connection to the Gateway peer using Transport Layer Security (TLS), what information must be supplied by the client application?
A. The client private key and the public key of the TLS certificate authority.
B. The endpoint address of the Gateway peer and the certificate of the TLS certificate authority.
C. A common connection profile that includes the Gateway peer address and TLS certificate.
D. The Gateway peer host name, service port number, and a TLS host name override.
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
質問 3：
Which are the transaction steps that are managed by the Fabric gateway service?
A. Finding a nonce for a pre-image of a hash function for mining.
B. Evaluate, endorse, submit, and get commit status.
C. Collect transactions into a block and eliminating invalid transactions.
D. Realizing a distributed verifiable random function for leader election.
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
質問 4：
Which channel feature allows organizations to run different versions of Hyperledger Fabric on their peer nodes?
A. Channel capabilities
B. Anchor peers
C. Endorsement policies
D. Consensus protocols
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 5：
What should be taken into account at implementing efficient CouchDB queries from chaincode?
A. Using OLAP (Online analytical processing) and Cube functionality of CouchDB is enough to implement efficient queries.
B. Using indexes, focusing on simple queries and avoiding full index scans like with operators $or, $in and
$regex.
C. Using advanced relational algebra and SQL query language options of CouchDB is enough to implement efficient queries.
D. Using complex indexes for certain columns is enough even if full scan operators like $or, $in and $regex are used.
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
質問 6：
For an endorsed transaction, the gateway service forwards the transaction to the ordering service, which orders it with other endorsed transactions and then completes what?
A. Sends the transaction to the endorsement phase.
B. Broadcasts the transaction to all peers in the channel.
C. Sends the transaction to the validation phase.
D. Packages all endorsed transactions into a block.
正解：D
解説: (Pass4Test メンバーにのみ表示されます)
Etou -
高いスコアで合格するには十分ですね。問題を暗記して試験に受けてみて、試験の内容がほぼ問題集の内容に一致していてびっくりしました。スムーズにかけたし、合格することもできました。