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 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






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






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






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






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






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






7. Twisted pair cable with speed capability of 1Gbps






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






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






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






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






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






13. Packet filtering - proxies - stateful inspection






14. Acts as an organizations internal phone system






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






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






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






18. 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






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






20. Used to pass data from one VLAN to another






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






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






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






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






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






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






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






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






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






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






31. 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






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






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






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






35. 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






36. Cable used most in networks - maximum speed 1Gbps - maximum length 100 meters - susceptible to tap






37. Level 2 firewall often used to filter web traffic






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






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






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






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






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






43. Monitors network traffic to identify possible attacks






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






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






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






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






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






49. Firewall with several NICs connected to different networks






50. 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