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. Session hijacking countermeasure






2. Man in the middle attack where the content of an intercepted message is altered before it is sent on






3. Packets with a forged source IP address - purpose to conceal the identity of the sender or impersonate another computing system






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






5. A method - used by switches and email servers - of delivering messages which are temporarily held by an intermediary before being sent to their final destination






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






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






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






9. Cable with copper core - has no physical transmission security and is easy to tap - 10mbps - maximum length 500 meters






10. Level 2 firewall often used to filter web traffic






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






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






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






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






16. Two authoritative sources for your domain namespace with differing contents depending on whether the query is internal or external






17. Monitors network traffic to identify possible attacks






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






19. A variation of a smurf attack using UDP






20. 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






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






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






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






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






25. Dynamic / private ports






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






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






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






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






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






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






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






33. Used to pass data from one VLAN to another






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






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






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






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






38. IDS response method using logging and notification






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






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






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






42. Acts as an organizations internal phone system






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






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






45. 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






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






47. Packet filtering - proxies - stateful inspection






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






49. A complete transfer of all DNS zone information from one server to another






50. User / registered ports