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?
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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?
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Distributes incoming requests sequentially to each server in a list, cycling through them in order.- What is session persistence (sticky sessions) in load balancing?
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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?
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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?
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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?
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Routes new requests to the server currently handling the fewest active connections.- What does DNS stand for?
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Domain Name System.- What does an A record do in DNS?
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Maps a domain name to an IPv4 address.- What does a CNAME record do in DNS?
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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?
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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?
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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?
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Specifies the mail server responsible for receiving email messages for a domain.- What is a Virtual Private Network (VPN)?
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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)?
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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?
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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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