Cisco 642-655 Exam Prep Course (Premium File)
AI-Powered 642-655 Wide Area Application Services for Field Engineers (WAASFE) Exam Exam - Pass on Your First Try

Question 3:

• Answer: C: Configure an Access-Control-Allow-Origin header to authorized domains.

• Set an HttpOnly flag to force communication by HTTPS: HttpOnly affects cookie ??????? via client-side scripts, not transport security. HTTPS enforcement is done with TLS, not HttpOnly.
• Block requests without an X-Frame-Options header: X-Frame-Options mitigates clickjacking, not cross-origin data access.
• Disable the cross-origin resource sharing header: This would remove restrictions and increase exposure; you should restrict origins, not disable CORS.

UTM STANDS FOR
Unified Threat Management.
It’s an integrated security appliance that combines multiple controls (e.g., firewall, IDS/IPS, antivirus/malware scanning, VPN, content filtering) to protect the network perimeter.

Question 332:

• The correct answer is: B. Reimage the end user's machine.

• Why: The SOC has a live indication of a potential compromise (remote control, credential-like data). In incident response, containment/eradication takes precedence to stop malware persistence and possible exfiltration. Reimaging quickly cleans the host so you’re not just “mitigating” by changing credentials.

• About the assumption: It isn’t that the compromise is fully confirmed or all evidence is already collected. The scenario describes suspicious activity that warrants immediate containment to reduce risk. Evidence collection can occur after containment.

• Why not the others:

• Practical nuance: If feasible, you might quickly gather volatile data (RAM, running processes) before reimage, but the exam’s best-practice choice prioritizes containment/eradication first.

Question 382:

• Correct answer: C — Inability of a plan subscriber to locate and access fee information for nearby participating service providers.

• Why: The stated capabilities focus on helping subscribers find providers in their vicinity (real-time maps/GPS, search by postal code or radius) and, critically, enable downloading the fee schedule for those providers. Requirements 7–11 directly support locating providers and retrieving their fee information. While directions (B) are useful, the primary business need driven by the enhancements is to locate nearby providers and access their fee information (C). Options A and D refer to provider-to-provider alerts or provider awareness of subscribers, which are not the primary goals of these enhancements.

• Note: The problem statement’s official answer in this page shows D, which does not align with the described capabilities. The explanation above aligns the needs with the subscriber-centered benefits.

Question 116:

• Correct answer: IPSec

• Why: IPSec provides security at the IP layer by authenticating and encrypting each IP packet in transit, giving confidentiality, integrity, and authenticity for data moving within the private cloud (e.g., site-to-site or host-to-host VPNs).

• Why not the others:

Question 33:

• Correct concept: The Weather.Historic entity corresponds to the text "by month" in the utterance.

• Why: The sample export shows the entity spans characters 23 to 31, and the substring in that span is "by month." In LU/LUIS, an entity's value is the exact text matched in the utterance; startIndex/endIndex (or startPos/endPos in older versions) indicate where that text appears.

• Key takeaway: Weather.Historic is the phrase "by month" extracted from the user input, not the numeric value or a separate label. The positions illustrate where the entity text is located within the utterance.

Question 61:

• Correct answer: Run the Bot Framework Emulator.

• Why: When you start a bot locally, the Emulator is the standard tool to validate and debug your bot without publishing it. It lets you connect to your local endpoint (e.g., http://localhost:3978/api/messages), send test messages, inspect requests/responses, and verify dialogs and state.

• What to expect: You can test conversation flows, activities, and debugging traces, ensuring the bot behaves as intended before connecting to any Azure channels.

• Why the other options aren’t correct for this step:

Question 51:

• Correct answer: Waterfall and Prompt dialogs (options C and D).

• WaterfallDialog provides a simple, linear sequence of steps to collect multiple inputs. You can branch the flow based on the item type and decide which steps to execute next.
• Prompt dialogs (e.g., TextPrompt, NumberPrompt) handle asking for input and basic validation, reducing custom parsing code.
• Using a waterfall flow with prompts lets you minimize development effort: you define the sequence once and use prompts to gather the required details for each item type, rather than building complex adaptive logic.

Question 35:

• Correct answer: Waterfall (option C), i.e., use a WaterfallDialog.
• Why: A product setup process is a linear, guided flow. A WaterfallDialog runs a fixed sequence of steps (prompts, validations, and results) in order, which is ideal for collecting setup details step-by-step and finalizing the configuration.
• How it works:

• Why not the others:

Question 34:
Correct answers: Adaptive Card (D) and Dialog (E).
Explanation:

• Adaptive Card: Lets you render rich content, including multiple options each with an image. You can include images for every option and actions (like Submit) to capture the user’s choice.
• Dialog: Provides the flow control to show the card, wait for the user to pick an option, and then branch to the appropriate next steps. It manages multi-turn interactions and state.

• an entity: Used for extracting data from user input, not for presenting options with images.
• an Azure function: Backend code, not for UI presentation.
• an utterance: A user input phrase, not for building the option list.