Test your basic knowledge |

Comptia Security +: Network Security

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Level 2 firewall often used to filter web traffic






2. An attack where fragmented UDP packets with odd offset values are sent to the victim - when the OS attempts to rebuild the fragments they overwrite each other and cause confusion






3. Monitors network traffic to identify possible attacks






4. Protocol used to map an known IP address to its corresponding media access control (MAC) address






5. IP spoofing attack where the attacker can only send packets and has to guess about replies






6. Most common DMZ implementation using three firewall interfaces (internet - intranet - DMZ)






7. Seeks to reduce the probability and/or impact of a specific risk below an acceptable threshold






8. Twisted pair cable with speed capability of 10Mbps






9. Used to pass data from one VLAN to another






10. Connects devices together to form a subnet - broadcasts incoming packets to all devices






11. A locked down/hardened host on the public side of the firewall highly exposed to attacks (i.e. web server - email server)






12. Connects two or more subnets - determines the best path to forward packets based on packet header and forwarding table information






13. A server that sits between an intranet and it's Internet connection - masking all IP addresses






14. When a hacker takes over a TCP session between two machines - also known as session hijacking - foiled by the use of encrypted sessions






15. Malicious insiders - connections that bypass the firewall (i.e. IM) - encrypted traffic/tunneling - social engineering - physical access are missed by ___________






16. Head of a packet contains...






17. A set of rules computers use to communicate with each other across a network






18. Network configuration that permits selected outsiders access internal information systems






19. An attack where an attacker captures sensitive information and sends it again later in an attempt to replicate the transaction






20. IP - email - website - DNS - and ARP






21. Attack where an attacker intercepts traffic and tricks parties at either end into believing they are communicating with each other






22. Promiscuous NIC to sniff passing traffic - admin NIC to send alerts to centralized management system






23. Twisted pair cable with speed capability of 1Gbps






24. A logical division of a computer network - in which all nodes can reach each other by broadcast at the data link layer - equivalent to a VLAN






25. A person or program masquerades as another by presenting false information to gain an illegitimate advantage






26. Known as thicknet - 10mbps - limited to 500 meters






27. Firewall that communicates directly with a perimeter router and the internal network - 2 NICs - screens internal traffic






28. A flaw in TCP/IP to verify that a packet really comes from the addess indicated in the IP header leads to this attack






29. Firewall with several NICs connected to different networks






30. Amplifies the signal of incoming packets before broadcasting them to the network






31. Evolved from IDS - monitors network traffic - detects and responds to attack on network






32. Unauthenticated connections - creating the potential for a successful connection as an anonymous user






33. IP spoofing attack where the attacker can monitor packets and participate in bidirectional communication






34. Type of IP addresses not routed on the internet: 10.x.x.x - 172.16.x.x - 192.168.x.x






35. A logical group of computers connected via a switch/hub that share the same network prefix in their IP address






36. Unauthenticated Windows session where an attacker can gather list of users - groups - machines - shares - user and host SID






37. Firewall with two NICs - one internal and one external facing - NAT is often used with this firewall






38. Generate random TCP sequence numbers and encrypt traffic countermeasure what attacks






39. A group of hosts on logical network segment that communicate as if they were attached to the same broadcast domain - regardless of their physical location






40. A DoS attack that subverts the normal "three way handshake" of TCP/IP by sending SYN packets - but no corresponding ACK packets






41. Malicious activity not reported or detected






42. A decoy system - intentionally left exposed to attract/distract attackers - logs and monitors attacker activities






43. A feature of firewalls / routers that disguise the IP address of internal systems allowing connection to the Internet using one public address






44. Man in the middle attack where the attacker captures the traffic and sends it to the original recipient without altering the intercepted data






45. Variation of the SYN flood where SYN packets are spoofed to have the same source and destination IP address and port






46. Collection on honeypots






47. Allows all traffic except traffic that is specifically denied - also known as permissive access






48. Attempt to block service or reduce activity by overloading the victim machine with ping requests






49. Firewall that intercepts and inspects messages before delivering them - placed between trusted and untrusted networks - degrade network traffic - also know as application gateway






50. Creating a illegitimate website with the intention of convincing victims that they are visiting a legitimate site - typically to collect confidential information