Feedback — Week 5 Quiz

How is a post-election audit different from a full manual recount?

Your Answer		Score	Explanation
Post-election audits may only check a sample of ballots rather than all the ballots	Correct	1.00
Total		1.00 / 1.00

Machine assisted audits…

Your Answer		Score	Explanation
Compromise ballot secrecy for increased integrity	Incorrect	0.00	Actually, because the ballots can be shuffled before having serial numbers printed on them, it does not violate ballot secrecy any more than traditional ballots would
Total		0.00 / 1.00

How does open-ended testing differ from conformance testing?

(Check all that apply.)

Your Answer		Score	Explanation
Open-ended testing is able to find all the problems with a system, while conformance testing is not	Correct	0.20	Actually, not finding problems in an open-ended test does not mean that there aren’t any
Conformance testing allows for more feedback that election officials can use to understand the security of a voting system	Incorrect	0.00	Either kind of testing can provide large amount of feedback to election officials
Conformance testing is mainly concerned with finding vulnerabilities	Correct	0.20	Open-ended testing focuses on finding vulnerabilities; conformance testing checks for a set of required mechanisms
Open-ended testing is what most of the researchers discussed in this course performed on election systems	Correct	0.20
Open-ended testing requires testers to think like an adversary, while conformance testing uses a predefined check list approach	Incorrect	0.00
Total		0.60 / 1.00

In the context of voting, regulatory capture is…

Your Answer		Score	Explanation
where a voting machine is not tested based on legal regulations for security prior to an election	Incorrect	0.00
Total		0.00 / 1.00

Which of the following voting technologies can provide software independence?

(Check all that apply.)

Your Answer		Score	Explanation
Lever machines	Correct	0.20	While lever machines do not have software, a change in the lever machines internals could result in an undetectable change in an election
Paperless DREs	Incorrect	0.00
Machine-assisted optical scan	Incorrect	0.00
DRE with VVPAT	Incorrect	0.00
Paper ballots	Correct	0.20
Total		0.40 / 1.00

What are some reasons end-to-end verifiable voting might not be adopted?

(Check all that apply.)

Your Answer		Score	Explanation
Many voters may not understand the complications of the system	Correct	0.25
It may be more expensive to run than existing technology	Correct	0.25
End-to-end verifiable voting violates ballot secrecy for users that want to verify how they voted	Incorrect	0.00	Actually, this is something the end-to-end verifiable voting system aims to prevent
Existing solutions in widespread use are already end-to-end verifiable for voters that choose to do so	Incorrect	0.00
Total		0.50 / 1.00

In an (ideal) end-to-end verifiable voting system…

(Check all that apply.)

Your Answer		Score	Explanation
voters are able to verify that their votes were counted as cast	Correct	0.25
voters are able to verify that all votes were counted as cast	Correct	0.25
voters are able to determine how others voted	Incorrect	0.00
only the voting machine that counts the votes must be trusted as not malicious in order to have confidence in the outcome	Correct	0.25	Actually, the goal of end-to-end verifiable voting systems is to allow for software independence, where no software or machine is trusted to be non-malicious with respect to integrity
Total		0.75 / 1.00

In a machine-assisted audit, ballot numbers are printed on ballots after they have been cast because…

Your Answer		Score	Explanation
It helps protect ballot secrecy in later audit stages	Correct	1.00
Total		1.00 / 1.00

Which of the following are difficulties with regulations for voting systems?

(Check all that apply.)

Your Answer		Score	Explanation
Regulatory capture	Incorrect	0.00
Regulations are slow to adapt to new voting technology	Correct	0.25
Regulations are ineffective against insecure private companies	Incorrect	0.00	Actually, since the regulations dictate what jurisdictions are allowed to buy, regulations greatly influence the private companies manufacturing voting machines
Regulations reduce the transparency of a voting system	Incorrect	0.00	Actually, it’s possible for regulations to encourage or require better transparency in a system
Total		0.25 / 1.00

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