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Networking Fundamentals practice questions

10 questions in 1 test. Open one to answer it on its own, or take a whole test.

Test 1

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  1. A new help desk technician is learning to map the seven-layer OSI model onto the four-layer TCP/IP model used on the Internet. The OSI Network layer (layer 3), where IP… · Network Models & Layers
  2. A developer is building a live voice-chat feature. A packet that arrives late is useless because the conversation has already moved on, so the team wants the lightest transport… · Transport Protocols
  3. A junior sysadmin opens a packet capture of a browser connecting to a web server over TCP. Before any HTTP data appears, three segments set up the connection. In what order do… · Transport Protocols
  4. A small company owns the domain example.com and has moved its email to a hosted mail server named mail.example.net. Other mail servers on the Internet must learn where to deliver… · DNS
  5. An administrator changes the A record for app.example.com to point at a new server. The record's TTL is 86400. An hour later, some users reach the new server but others still… · DNS
  6. A server is configured as 192.168.10.77/26. A technician needs to give a new printer a static address in the same subnet so the two can talk directly without a router. Which… · IPv4 Addressing & Subnetting
  7. An office network uses private IPv4 addresses internally, and the edge router uses NAT to translate them to its single public address. When planning a new internal subnet, which… · IPv4 Addressing & Subnetting
  8. A user's desktop is set to obtain an IP address automatically. It can't reach any websites or file shares, and ipconfig shows the address 169.254.37.12 with mask 255.255.0.0 and… · Network Services & Troubleshooting
  9. A developer is logged in to an internal web app as a regular user and tries to open the /admin page. The server recognizes who the user is, but the account doesn't have admin… · Application Protocols
  10. A laptop is configured as 192.168.1.10/24 with default gateway 192.168.1.1, and its ARP cache is empty. The user runs ping 203.0.113.50. Before the first ICMP echo request can be… · Network Services & Troubleshooting