5.3 Implement Toll Fraud Prevention on Webex Calling 350-801 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · medium

   Which Webex Calling built-in security feature helps prevent toll fraud by verifying the identity of users and devices before allowing calls?

   • AEncryption
   • BAuthentication
   • CCall controls
   • DFirewall
   Reveal Solution Discussion Select an answer first
2. 22expert · hard

   A company has a Webex Calling deployment with users in multiple countries. The security team wants to detect toll fraud, but they are overwhelmed by false positives from legitimate calls to international branch offices. They need a monitoring strategy that reduces noise while still catching anomalous behavior. What is the most effective approach?

   • ACreate alerts for calls to known premium-rate number prefixes and for calls that exceed a defined duration or frequency threshold per user
   • BReview the monthly bill and investigate any increase in total charges
   • CAlert on all international calls regardless of destination
   • DDisable international calling for all users and only enable it for a few managers
   Reveal Solution Discussion Select an answer first
4. 23foundation · medium

   Which best practice helps minimize toll fraud risk by regularly reviewing calling activity and permissions?

   • AUsing default passwords
   • BDisabling call controls
   • CRegular audits
   • DIgnoring usage reports
   Reveal Solution Discussion Select an answer first
5. 24application · medium

   A company's Webex Calling administrator receives a report of a large number of calls to a premium-rate number. The calls are traced back to a single user account that was recently created. The administrator suspects the account was created by an attacker who gained access to the Control Hub. Which attack vector best describes this scenario?

   • AA physical theft of a desk phone
   • BA denial-of-service attack on the company's internet connection
   • CA user's voicemail password being guessed
   • DUnauthorized administrative access leading to the creation of a rogue user account
   Reveal Solution Discussion Select an answer first
6. 25expert · hard

   A company's security team has set up an alert for calls to a specific high-risk country. The alert fires frequently because a legitimate customer support team makes calls to that country. The team wants to keep the alert but reduce the noise. Which adjustment to the alert configuration is most appropriate?

   • ARemove the alert for that country entirely
   • BChange the alert to only fire for calls made outside of business hours
   • CAdd a threshold for the number of calls or total duration per user within a specific time window before triggering the alert
   • DDisable the customer support team's ability to call that country
   Reveal Solution Discussion Select an answer first