220-1201 · topic practice

Network Protocols practice questions

Practise identifying network protocols by port numbers, transport layer usage, and common application scenarios for the 220-1201 exam.

Courseiva uses original exam-style practice questions designed for learning and revision. The goal is to understand the concepts, recognise exam patterns, and improve through explanations — not memorise copied exam dumps.

Reviewed byJohnson Ajibi· MSc IT Security
20 questionsDomain: Network Protocols

What the exam tests

What to know about Network Protocols

Tests your ability to identify and differentiate common network protocols by port number and purpose.

Recognizing TCP vs UDP protocol characteristics

Matching ports to protocols (e.g., 80=HTTP)

Identifying secure protocol variants (HTTPS, SFTP)

Understanding protocol roles in email (SMTP, IMAP)

Why learners struggle

Why Network Protocols questions are commonly missed

Network Protocols questions are commonly missed because test-takers confuse similar port numbers and protocol layers. Many also forget which protocols are connection-oriented vs connectionless.

  • ·TCP vs UDP — reliability vs speed trade-off
  • ·Port 22 (SSH) vs port 23 (Telnet) — security difference
  • ·IMAP (143) vs POP3 (110) — mailbox vs download
  • ·DHCP vs DNS — IP assignment vs name resolution
  • ·HTTP (80) vs HTTPS (443) — encryption presence
  • ·FTP (21) vs TFTP (69) — connection vs connectionless

Watch out for

Common Network Protocols exam traps

  • Confusing TCP port 443 with UDP port 443 for HTTPS
  • Mixing up FTP (21) with SFTP (22) port assignments
  • Assuming all email protocols use TCP exclusively
  • Thinking DHCP uses port 67/68 only on server side

Practice set

Network Protocols questions

20 questions · select your answer, then reveal the explanation

Question 1hardmultiple choice
Review the full routing breakdown →

A technician is configuring a network for a branch office that will use a router to connect to the main office over the internet. The connection must be encrypted and authenticated to ensure data privacy. Which protocol should the technician configure on the router?

Question 2mediummultiple choice
Read the full NAT/PAT explanation →

During a network security audit, a technician finds that an employee is using a protocol that allows remote control of a computer with full graphical interface but without encryption. Which protocol should be replaced with a more secure alternative?

Question 3easymultiple choice
Read the full wireless explanation →

During a network upgrade, a technician installs a new wireless access point. Users on the new AP can access local resources but cannot browse the internet. The technician verifies that the AP has a valid IP address and can ping an external website by IP address. Which protocol is most likely misconfigured?

A technician is setting up a new file server and needs to ensure that users can access shared folders using a friendly name like \\fileserver\share instead of an IP address. Which protocol must be configured correctly on the network?

A company deploys a new web server and wants to ensure that data transmitted between clients and the server is encrypted. The technician configures the server to use a certificate. Which protocol should be enabled on the server?

A technician is troubleshooting a network where users intermittently lose connectivity to a critical database server. The technician notices that the server's IP address is being duplicated on the network. Which protocol is responsible for detecting and reporting this conflict?

A small office uses a network printer that is shared via a print server. Users report that print jobs are not reaching the printer. The technician pings the print server successfully but cannot connect to the printer's web interface using its IP address. Which protocol is most likely blocked or malfunctioning?

A technician is troubleshooting a VoIP phone that cannot register with the call server. The phone has a valid IP address and can ping the call server by IP. Which protocol is most likely not functioning correctly?

Question 9easymultiple choice
Read the full wireless explanation →

A customer reports that their new laptop cannot connect to the internet at a coffee shop, but their smartphone works fine. The technician checks the laptop's network settings and sees the Wi-Fi adapter is enabled and connected to the correct SSID. Which protocol is most likely not configured correctly on the laptop?

Question 10mediummultiple choice
Read the full Network Protocols explanation →

A user reports that their email client cannot send messages but can receive them. The technician verifies that the email server is reachable and that the user's credentials are correct. Which protocol is most likely misconfigured in the email client?

Question 11easymultiple choice
Read the full DHCP explanation →

A user complains that they cannot access any websites, but they can ping other devices on the local network by IP address. The network uses DHCP and DNS servers. Which protocol is most likely failing?

Question 12mediummultiple choice
Read the full Network Protocols explanation →

A network administrator notices that a managed switch is not reporting its status to the central monitoring system. The monitoring system uses a protocol that collects device information such as CPU load and interface errors. Which protocol is most likely not configured on the switch?

During a network upgrade, a technician needs to ensure that all devices on a small office LAN receive IP addresses automatically from a central server. Which protocol must be running on that server?

Question 14hardmultiple choice
Read the full DNS explanation →

A company's remote employees use VPN to connect to the office network. Recently, some users report that they can connect to the VPN but cannot browse the internet or access internal servers by name, though they can ping internal IP addresses. The VPN is configured to push DNS settings. Which protocol is likely misconfigured on the VPN server?

A technician is troubleshooting a network where users can access internal resources but cannot reach any external websites. The internal network uses a proxy server. The technician finds that the proxy server is configured to use a specific protocol to forward requests to the internet. Which protocol is the proxy server most likely using to communicate with external web servers?

Question 16mediummultiple choice
Read the full Network Protocols explanation →

A company's web server is accessible from the internet, but users report that they cannot upload files to it using a web browser. The server is configured to allow file uploads via HTTP. Which protocol is most likely being blocked by the firewall?

Question 17easymultiple choice
Open the full VLAN trunking answer →

A customer reports that their new VoIP phone cannot register with the company's call server, but their computer on the same switch port works fine. The network uses VLANs for voice and data traffic. Which protocol must be configured on the switch port to separate the voice traffic from the data traffic?

A technician is setting up a new file server that needs to be accessible to employees both from the local network and remotely over the internet. The server will host shared folders. Which protocol should the technician ensure is properly configured and secured on the server for file access?

Question 19mediummultiple choice
Read the full Network Protocols explanation →

A user reports that they can send emails but cannot receive any. The email client is configured with SMTP for outgoing and POP3 for incoming. The server is reachable. Which port is most likely blocked on the firewall for the incoming mail protocol?

Question 20mediummultiple choice
Read the full NAT/PAT explanation →

A technician is configuring a new email server for a small business. Employees need to send and receive email from their desktop clients (Outlook) and also access email via a web browser. Which combination of protocols should the technician configure on the server to support both client types?

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Frequently asked questions

What does the 220-1201 exam test about Network Protocols?
Tests your ability to identify and differentiate common network protocols by port number and purpose.
How should I use these practice questions?
Select your answer before revealing the explanation. Then read why each option is right or wrong — this active recall approach builds retention far faster than re-reading notes.
Can I practise just Network Protocols questions in a focused session?
Yes — the session launcher on this page draws every question from the Network Protocols domain. Use a 10-question session first to gauge your baseline, then move to 20 or 30 once the weak spots are clear.
Where can I practise other 220-1201 topics?
Use the topic links above to move to related areas, or go back to the 220-1201 question bank to see all topics.
Are these real exam questions or dumps?
These are original practice questions written to test the same concepts the 220-1201 exam covers. They are not copied from any real exam or dump site.