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Operator______ can be used to downcast base-class pointers safely. down_cast dynamic_cast cast type_cast

Ask by Sandoval Mitchell. in the United States
Mar 14,2025

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The correct operator for safely downcasting base-class pointers in C++ is **dynamic_cast**.

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The operator you’re looking for is `dynamic_cast`. It specifically allows safe downcasting of pointers or references to polymorphic types in C++. If the downcast is not valid, `dynamic_cast` will return `nullptr` for pointers or throw an exception for references, helping you avoid dangerous situations like trying to access an object of the wrong type. Now, if you're using `dynamic_cast`, it's important to ensure that your base class has at least one virtual function. If it doesn't, the type information required for the check won't be available, which can lead to undesirable behavior or failed downcasts. So remember, no virtual functions, no safety net!

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To answer this question, complete the lab using the information below. You have been asked to add a VPN connection on a laptop computer in your organization. The sales team uses this computer to deliver sales presentations. They need to establish a secure connection to the company network while working on the road. You need to choose a VPN type that operates using firewall ports that are commonly left open. You also need to use the most secure password-based authentication possible without using a smart card. In this lab, your task is to configure and establish a VPN connection on the Office2-Lap using the following information: - Add a VPN Connection as follows: - VPN provider: Windows (built-in) - Connection name: SalesVPN - Server name or address: 198.10.20.12 - VPN type: Secure Socket Tunneling Protocol (SSTP) (SSTP works by encapsulating PPP traffic over the SSL channel of the HTTPS protocol. This type of VPN runs on port 443, which is typically left open-in most network firewalls.) - Type of sign-in info: User name and password - Don't allow Windows to remember authentication credentials - Set VPN security properties to meet the following requirements: - VPN type: Secure Socket Tunneling Protocol (SSTP) - Authentication: Microsoft: Secured password (EAP-MSCHAP V2) (encryption enabled) (This is the most secure password-based authentication protocol.) - Connect to the VPN as follows: - Username: MaryS49 - Password: Sm@rt72\# (i) It isn't necessary to specify a domain when configurring this connection.
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