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






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






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






4. Level 1 firewall that looks at the head of a packet - (not content) - operates rapidly - application independent - either allow or deny packets






5. Firewall with several NICs connected to different networks






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






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






8. Bbenign activity reported as malicious






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






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






11. One private IP address is mapped to one public IP address






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






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






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. Examines a entire packet and determines action based on a complex set of rules






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






17. Used by ISPs - single public network IP address is shared among many hosts on a private network - also known as PAT






18. Acts as an organizations internal phone system






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






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






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






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






23. A firewall that checks all layers of a packet including content - verifying an expected response to a current communication session - also call a deep packet inspection






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






25. An attacker redirects valid request to malicious sites by feeding a DNS server altered records which are retained in its cache






26. Level 2 firewall often used to filter web traffic






27. 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






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






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






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






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






32. Web servers - FTP servers - DNS servers - mail servers should be located on the _____________






33. Multiple network defense components are placed throughout the organizations assets and the network is properly segmented






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






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






36. Monitors network traffic to identify possible attacks






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






38. DMZ implementation using two firewalls with different rule sets for the DMZ and intranet






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






40. A physical or logical subnetwork that houses systems accessible to a larger untrusted network - usually the Internet - also known as DMZ






41. Head of a packet contains...






42. A packet filtering firewall works at this layer of the OSI model






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






44. User / registered ports






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






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






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






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






49. Dynamic / private ports






50. Examines content passing through and makes a decision on the data based on a set of criteria - normal uses email filtering and web browsing