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. A sniffer mode used to capture traffic addressed to/from another machine on the network






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






3. An application layer gateway works at this layer of the OSI model






4. Packet filtering - proxies - stateful inspection






5. Known as thinnet - 10mbps - limited to 185 meters






6. Used to pass data from one VLAN to another






7. Connects devices together to form a subnet - packet forwarding is based on MAC addresses - works at the data link layer of the OSI






8. 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






9. A ping message is broadcast to an entire network with a spoofed source IP addess of the victim computer - flooding the victim computer with responses during this attack






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






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






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






13. A pool of public IP addresses is shared by a collection of private IP addresses






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






15. Capture and analyze network traffic - also known as packet analyzer - sniffer - network analyzer






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






17. Dynamic / private ports






18. Well known ports - allow administrative access - used for network services - considered only ports allowed to transmit traffic thru a firewall






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






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






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






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






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






24. An attacker redirects traffic by falsifying the IP address requested by ARP request






25. A logical connection point allowing computers and software to communicate and exchange data






26. Twisted pair cable with speed capability of 10Mbps






27. A level 3 firewall that remembers / tracks network connections - maintains a state table - distinguish which side of a firewall a connection was initiated - higher security






28. Crashing a computer by sending oversized packets (over 64 bytes) that it doesn't know how to handle






29. IPS response method - terminate process/session - block/reject and redirect network traffic






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






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






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






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






34. 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






35. 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






36. User / registered ports






37. IDS that relies on the identification of known attack signatures






38. Forging an IP address with the address of a trusted host






39. Bbenign activity reported as malicious






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






41. IDS that relies on usage patterns and baseline operation - can ID new vulnerability - high rate of false alarms






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






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






44. A variation of a smurf attack using UDP






45. Malicious activity not reported or detected






46. Session hijacking countermeasure






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






48. Twisted pair cable with speed capability of 1Gbps






49. One device per network segment - does not use local system resources - can't examine encrypted traffic - OS independent - less expensive






50. Cable designed for transmission at higher speeds (100Mbps - 2Gbps) and longer distances (2km) - expensive -eliminates signal tapping