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\( \left.\begin{array}{l}\text { Which of the following is not allowed? } \\ \text { References to abstract classes. } \\ \text { Objects of abstract classes } \\ \text { Arrays of pointers to abstract classes. } \\ \text { Multiple pure virtual functions in a single } \\ \text { abstract class }\end{array}\right] \).

Ask by Moran Daniels. in the United States
Mar 14,2025

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You cannot create objects of abstract classes.

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Mind Expander

In the world of object-oriented programming, abstract classes are like blueprints that can’t stand on their own, which makes the idea of instantiating (or creating objects of) an abstract class a no-go. You can think of it like trying to build a real house from just the plans without actually constructing anything — it just doesn’t fly! However, don’t fret; you can certainly have arrays of pointers pointing to abstract classes! This allows you to manage collections of objects that share a common interface while still retaining their unique identities—kind of like having a mixed bag of fruit, where each piece has different flavors but belongs to the same grocery basket!

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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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