The answer is single sign-on (SSO). This is correct because SSO allows a user to authenticate once with an identity provider—in this case, the company portal—and then access multiple applications like email, the ticketing system, and the HR site without re-entering credentials, using a security token such as a SAML assertion or Kerberos ticket to prove identity. On the Security+ SY0-701 exam, this concept tests your understanding of authentication federation and token-based access; a common trap is confusing SSO with federated identity management, though SSO is the simpler, single-domain version. A helpful memory tip: think of SSO as a “one key, many doors” system—once you unlock the main gate, every connected room opens automatically.
SY0-701 Security Architecture Practice Question
This SY0-701 practice question tests your understanding of security architecture. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Employees sign in once to the company portal and then can access email, the ticketing system, and the HR site without logging in again. What is this called?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Single sign-on
Single sign-on (SSO) allows a user to authenticate once and gain access to multiple applications or systems without re-entering credentials. In this scenario, the company portal acts as the identity provider (IdP), and after initial authentication, it issues a token (e.g., SAML assertion or Kerberos ticket) that is accepted by the email, ticketing, and HR systems as proof of identity. This eliminates the need for repeated logins across these services.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Single sign-on
Why this is correct
SSO lets a user authenticate once and access multiple integrated services without repeated logins.
Related concept
Read the scenario before looking for a memorised answer.
✗
Port forwarding
Why it's wrong here
Port forwarding changes network traffic paths and has nothing to do with user login experience.
✗
Tokenization
Why it's wrong here
Tokenization protects sensitive data values, but it does not provide one login for many apps.
✗
Network address translation
Why it's wrong here
NAT translates IP addresses, which is unrelated to authenticating users across applications.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse single sign-on with tokenization, because both involve 'tokens,' but tokenization is a data protection method for sensitive data, not an authentication mechanism for accessing multiple applications.
Detailed technical explanation
How to think about this question
Under the hood, SSO commonly uses protocols like SAML 2.0, OAuth 2.0, or OpenID Connect (OIDC). In a SAML-based SSO, the user authenticates to the IdP, which generates a signed SAML assertion containing the user's identity and attributes; this assertion is then passed to each service provider (SP) via HTTP redirect or POST, and the SP validates the signature to grant access. A subtle behavior is that SSO relies on a shared trust relationship (often via X.509 certificates) between the IdP and each SP, and if the token's time-to-live (TTL) expires, the user may be prompted to re-authenticate.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SY0-701 question in full detail.
Security Architecture — This question tests Security Architecture — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Single sign-on — Single sign-on (SSO) allows a user to authenticate once and gain access to multiple applications or systems without re-entering credentials. In this scenario, the company portal acts as the identity provider (IdP), and after initial authentication, it issues a token (e.g., SAML assertion or Kerberos ticket) that is accepted by the email, ticketing, and HR systems as proof of identity. This eliminates the need for repeated logins across these services.
What should I do if I get this SY0-701 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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