220-1101 Networking Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  DNS (Domain Name System)

  Why it's wrong here

  DNS (Domain Name System) is wrong because its role is to translate human-readable domain names, like example.com, into numerical IP addresses so that clients can locate servers. While DNS does interact with IP addresses, it provides a directory lookup service and does not assign IP addresses, subnet masks, default gateways, or other network settings to a client's interface. A workstation must already have a valid IP configuration—often obtained via DHCP—before it can even query a DNS server.

  When this WOULD be correct

  In a scenario where workstations need to resolve hostnames to IP addresses for network communication, such as accessing a web server by its domain name, DNS would be the correct protocol to enable on the router or a dedicated server.

• ✓

  DHCP (Dynamic Host Configuration Protocol)

  Why this is correct

  DHCP (Dynamic Host Configuration Protocol) is the correct answer because it is the service specifically designed to automatically assign IP configuration parameters—such as IP address, subnet mask, default gateway, and DNS servers—to network clients. By using a lease-based mechanism, DHCP centrally manages addressing, eliminating the need for manual static configuration on each workstation and reducing the risk of IP conflicts.

• ✗

  HTTP (Hypertext Transfer Protocol)

  Why it's wrong here

  HTTP (Hypertext Transfer Protocol) is incorrect because it is an application-layer protocol used to request and deliver web content, such as HTML pages, images, and API responses, over TCP/IP. It does not participate in IP address assignment or any aspect of network-layer configuration; it merely relies on an already-configured IP stack to communicate with servers. Even if HTTP could retrieve a dynamic IP from a remote service, that is not its built-in function.

  When this WOULD be correct

  A question asking which protocol a web server uses to deliver web pages to a client browser would have HTTP as the correct answer, especially if options include other application-layer protocols like FTP or SMTP.

• ✗

  FTP (File Transfer Protocol)

  Why it's wrong here

  FTP (File Transfer Protocol) is not the answer because this protocol is used for transferring files between a client and a server over a TCP/IP network, typically using ports 20 and 21. FTP operates at the application layer and depends on an existing, correctly configured IP connection to establish sessions; it has no mechanism for assigning IP addresses or configuring network interfaces. Therefore, while FTP is a network service, it is completely unrelated to the automatic provisioning of IP settings.

  When this WOULD be correct

  FTP would be correct in a question asking: 'Which protocol should be used to upload web pages to a web server?' or 'Which protocol allows a client to download files from a remote server?'

Option-by-option analysis

Why each answer is right or wrong

Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 220-1101 exam frequently reuses these exact scenarios with slightly different constraints.

Analysis generated from the official 220-1101blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”

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