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. Bastion host - dual homed firewall - multi homed firewall - screened host - screened subnet






2. 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






3. Ping flooding - ping of death - smurf - fraggle - SYN flood - land - teardrop - email flood






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






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






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






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






8. Dynamic / private ports






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






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






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






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






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






14. Level 2 firewall often used to filter web traffic






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






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






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






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






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






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






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






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






23. Session hijacking countermeasure






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






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






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






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






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






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






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






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






32. Head of a packet contains...






33. 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






34. User / registered ports






35. Bbenign activity reported as malicious






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






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






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






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






40. Acts as an organizations internal phone system






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






42. Take control of a session between a server and client - the users gets kicked off the session while the attacker inserts himself into the session by sending a reset request to the client






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






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






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






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






47. 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






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






49. Used to pass data from one VLAN to another






50. Packet filtering - proxies - stateful inspection