Cloud networking concepts including load balancing, DNS, VPNs, and network segmentation tested on the CompTIA Cloud+ exam.
35 cards · basic cards · AI-written, checked twice. Edit anything.
- What is load balancing?
- A technique that distributes network traffic across multiple servers to optimize resource utilization and improve availability.
- What does the round-robin load balancing algorithm do?
- Distributes incoming requests sequentially to each server in a list, cycling through them in order.
- What is session persistence (sticky sessions) in load balancing?
- A technique that routes all requests from a specific client to the same server for the duration of their session.
- What is the purpose of health checks in load balancing?
- To verify that backend servers are operational before routing traffic to them, removing unhealthy servers from the pool.
- What is the difference between Layer 4 and Layer 7 load balancing?
- Layer 4 (transport) balances based on IP protocol data; Layer 7 (application) balances based on application-level data like URLs or hostnames.
- What does the least connections load balancing algorithm do?
- Routes new requests to the server currently handling the fewest active connections.
- What does DNS stand for?
- Domain Name System.
- What does an A record do in DNS?
- Maps a domain name to an IPv4 address.
- What does a CNAME record do in DNS?
- Creates an alias for another domain name, mapping one domain to another domain rather than to an IP address.
- What is TTL (Time To Live) in DNS?
- A value that specifies how long a DNS record can be cached by a resolver or client before needing to be refreshed from the authoritative server.
- What are the benefits of DNS caching?
- Reduces query load on authoritative servers and decreases client-side query response time by storing frequently accessed records locally.
- What does an MX record do in DNS?
- Specifies the mail server responsible for receiving email messages for a domain.
- What is a Virtual Private Network (VPN)?
- A technology that creates an encrypted, secure connection over a public network, allowing remote access or site-to-site connectivity.
- What is IPSec (IP Security)?
- A protocol suite that provides encryption and authentication for IP network communications, commonly used for site-to-site VPNs.
- What is an SSL/TLS VPN?
- A VPN that uses Secure Sockets Layer or Transport Layer Security protocols to create encrypted connections, often accessed through a web browser.
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