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Untitled Flashcards Set

1.
Q: What does DNS stand for?
A: Domain Name System

2.
Q: What port does DNS use?
A: Port 53

3.
Q: What protocol uses port 22?
A: SSH (Secure Shell)

4.
Q: What port does HTTPS use?
A: Port 443

5.
Q: What protocol uses port 80?
A: HTTP

6.
Q: What is DHCP used for?
A: Automatically assigns IP addresses to devices

7.
Q: What ports does DHCP use?
A: Ports 67 (server) and 68 (client)

8.
Q: What does SMTP stand for and what is it used for?
A: Simple Mail Transfer Protocol – used to send email

9.
Q: What port does SMTP use?
A: Port 25

10.
Q: What is the function of POP3?
A: Downloads email to a local client (port 110)

11.
Q: What does IMAP do?
A: Syncs email across multiple devices (port 143)

12.
Q: What port does Telnet use?
A: Port 23 (insecure remote access)

13.
Q: What port does RDP use?
A: Port 3389

14.
Q: What protocol monitors network devices?
A: SNMP

15.
Q: What port does SNMP use?
A: Port 161

16.
Q: What does FTP stand for?
A: File Transfer Protocol

17.
Q: What ports does FTP use?
A: Ports 20 (data) and 21 (control)

18.
Q: What protocol resolves IP to MAC addresses?
A: ARP (Address Resolution Protocol)

19.
Q: What is a MAC address?
A: A unique hardware address for NICs

20.
Q: What is an IP address?
A: A logical address used to identify a device on a network

21.
Q: What is a default gateway?
A: The router that forwards traffic to external networks

22.
Q: What is a subnet mask?
A: Determines the network vs. host portion of an IP

23.
Q: What is the loopback IP address?
A: 127.0.0.1

24.
Q: What is CIDR notation?
A: IP addressing format using a slash (e.g., /24)

25.
Q: What are the private IP ranges?
A:

10.0.0.0/8
172.16.0.0–172.31.255.255
192.168.0.0/16

26.
Q: What tool tests network connectivity?
A: ping

27.
Q: What tool traces the path to a host?
A: tracert (Windows) / traceroute (Linux)

28.
Q: What command shows IP configuration?
A: ipconfig (Windows) / ifconfig (Linux)

29.
Q: What tool looks up DNS records?
A: nslookup / dig

30.
Q: What device connects multiple networks?
A: Router

31.
Q: What device connects devices within the same LAN?
A: Switch

32.
Q: What outdated device broadcasts to all ports?
A: Hub

33.
Q: What does an access point do?
A: Provides wireless connectivity

34.
Q: What is the OSI model mnemonic?
A: All People Seem To Need Data Processing

35.
Q: What layer is responsible for routing?
A: Layer 3 – Network

36.
Q: What layer handles MAC addresses?
A: Layer 2 – Data Link

37.
Q: What layer deals with cables and signals?
A: Layer 1 – Physical

38.
Q: What layer manages sessions and communication setup?
A: Layer 5 – Session

39.
Q: What layer encrypts data?
A: Layer 6 – Presentation

40.
Q: What is the Transport layer responsible for?
A: End-to-end communication, TCP/UDP

41.
Q: What is TCP?
A: Connection-oriented protocol with error checking

42.
Q: What is UDP?
A: Connectionless, fast, no guaranteed delivery

43.
Q: What is NAT?
A: Network Address Translation – translates private IPs to public

44.
Q: What is PAT?
A: Port Address Translation – multiple devices share one IP

45.
Q: What is VLAN?
A: Virtual LAN – logically segments networks

46.
Q: What does VPN stand for?
A: Virtual Private Network

47.
Q: What is the purpose of a VPN?
A: Secure remote access over public networks

48.
Q: What is a firewall?
A: A device or software that filters traffic based on rules

49.
Q: What does IDS stand for?
A: Intrusion Detection System

50.
Q: What does IPS stand for?
A: Intrusion Prevention System

51.
Q: What is AAA in networking?
A: Authentication, Authorization, Accounting

52.
Q: What is the SSID?
A: Service Set Identifier – Wi-Fi network name

53.
Q: What does WPA2 provide?
A: Secure wireless encryption

54.
Q: What is MIMO?
A: Multiple Input, Multiple Output – improves wireless performance

55.
Q: What frequency offers greater range but lower speed?
A: 2.4 GHz

56.
Q: What is the connector for Ethernet?
A: RJ45

57.
Q: What is the purpose of a patch panel?
A: Central point for network cable management

58.
Q: What is the main advantage of fiber optic over copper?
A: Higher speed, longer distance, EMI resistance