Networking › Module 6 › Lesson 5
Quiz — Networking Basics Final
Final quiz covering OSI, IP, DNS, TCP/UDP, ports, NAT, MAC, ARP, and DHCP
Opening
Networking Basics — final APPLY check
Topic 3 walked the stack: OSI and TCP/IP, IPv4/IPv6 and private space, DNS and common application protocols, TCP vs UDP and ports, NAT and firewalls, then LAN essentials — MAC, ARP, and DHCP — always on machines and networks you own. Twelve APPLY questions reward judgment, not trivia. No scanning other LANs. No ARP poison how-tos. Next stop: Privacy & Digital Safety (Topic 4).
Knowledge Check
APPLY: A SOC ticket says "suspicious ARP on the access switch" and a second ticket says "phishing kit on a fake login page." Which OSI layers are the natural first labels?
Multiple choice
Knowledge Check
APPLY: ip -br addr shows lo 127.0.0.1/8 and eth0 192.168.56.10/24. A classmate wants the address to SSH into the VM from the host. What do you send, and why not loopback?
Multiple choice
Knowledge Check
APPLY: ping 8.8.8.8 works but getent hosts and the browser fail with "could not resolve." Which system is implicated, and what did DNS's job miss?
Multiple choice
Knowledge Check
APPLY: You need reliable, ordered delivery for SSH, but a game prefers low latency over retransmission. Which transports match, and which well-known ports are in play for SSH vs HTTPS?
Multiple choice
Knowledge Check
APPLY: ss -tuln on your laptop shows 0.0.0.0:3000 and 127.0.0.1:5432. You will join public Wi-Fi. Which bind is the café exposure, and what is still true about ping?
Multiple choice
Knowledge Check
APPLY: Fifteen home devices share one ISP IPv4. Outbound HTTPS works. Inbound SSH to the public IP does nothing. Best mechanism story?
Multiple choice
Knowledge Check
APPLY: A café AP uses MAC allow-listing as "security," and a leftover hub sits in a lab closet. Which two statements should a defender keep? (Select 2)
Select all that apply
Knowledge Check
APPLY: Traffic to 1.1.1.1 uses default via 192.168.1.1. ip neigh later shows that gateway IP at a MAC that is not your router's known MAC, and you did not swap hardware. What is the risk, and what is forbidden in this course?
Multiple choice
Knowledge Check
APPLY: A VM boots to 169.254.x.x with no default via. Which DHCP story fits, and what option would have installed the missing first hop?
Multiple choice
Knowledge Check
APPLY: ip addr is fine and ping of your gateway works, but resolvectl shows a DNS you never configured and lookalike sites appear. Best interpretation?
Multiple choice
Knowledge Check
APPLY: True or False: Layered troubleshooting (link → IP → gateway → DNS → curl -I) on your own machine is the ethical default; nmap of the school /24 is not a Topic 3 lab even if "the internet is down."
True or False
Knowledge Check
APPLY: You finished Networking Basics. Topic 4 is Privacy & Digital Safety. What is the honest carry-over?
Multiple choice
Answer all 12 knowledge checks to continue. (0/12 answered)