Microsoft Networking Essentials Exam Technology & Digital Applications 4 — Questions and Answers
Question 1: Which IPv6 address type is equivalent to a private IPv4 address and is used only within a local network?
- Global unicast
- Link-local
- Unique local (Correct answer)
- Multicast
Correct answer: Unique local
Unique local addresses (fc00::/7) are IPv6's equivalent to RFC 1918 private addresses, routable only within an organization's internal network.
Question 2: A company wants to allow remote employees to securely access the internal network over the internet. Which technology is most appropriate?
- FTP server
- VPN (Virtual Private Network) (Correct answer)
- Telnet
- HTTP proxy
Correct answer: VPN (Virtual Private Network)
A VPN creates an encrypted tunnel over the public internet, allowing remote users to securely access internal network resources as if they were on-site.
Question 3: What is the purpose of an SSL/TLS certificate on a web server?
- Block unauthorized users from accessing the site
- Authenticate the server's identity and encrypt data in transit (Correct answer)
- Cache web content closer to users
- Compress web pages to reduce load time
Correct answer: Authenticate the server's identity and encrypt data in transit
An SSL/TLS certificate enables HTTPS by authenticating the server's identity to the client and establishing an encrypted session to protect data in transit.
Question 4: Which command on a Windows PC would display the ARP cache, showing IP-to-MAC address mappings?
- ipconfig /displaydns
- arp -a (Correct answer)
- netstat -r
- nslookup
Correct answer: arp -a
The arp -a command displays the ARP cache, which lists recently resolved IP addresses and their corresponding MAC addresses.
Question 5: What is the default subnet mask for a Class C IPv4 network?
- 255.0.0.0
- 255.255.0.0
- 255.255.255.0 (Correct answer)
- 255.255.255.128
Correct answer: 255.255.255.0
Class C networks use a /24 prefix, represented as 255.255.255.0, allowing up to 254 usable host addresses per network.
Question 6: Which Microsoft Azure service provides a managed relational database as a service, eliminating the need to manage underlying server infrastructure?
- Azure Blob Storage
- Azure SQL Database (Correct answer)
- Azure Virtual Machines
- Azure Active Directory
Correct answer: Azure SQL Database
Azure SQL Database is a fully managed PaaS database engine that handles patching, backups, and high availability automatically.
Question 7: What does 'QoS' (Quality of Service) accomplish in a network?
- Assigns static IP addresses to critical servers
- Prioritizes certain types of traffic to ensure performance for latency-sensitive applications (Correct answer)
- Encrypts traffic to protect against eavesdropping
- Filters malicious content at the network perimeter
Correct answer: Prioritizes certain types of traffic to ensure performance for latency-sensitive applications
QoS marks and prioritizes traffic types (e.g., VoIP or video conferencing) so they receive preferential treatment over less time-sensitive data.
Microsoft Networking Essentials Exam Technology & Digital Applications 4
Which IPv6 address type is equivalent to a private IPv4 address and is used only within a local network?