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






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






3. Level 2 firewall often used to filter web traffic






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






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






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






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






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






9. 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






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






11. Amplifies the signal of incoming packets before broadcasting them to the network






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






14. Packet filtering - proxies - stateful inspection






15. Dynamic / private ports






16. Firewall with several NICs connected to different networks






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






18. 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






19. 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






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






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






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






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






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






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






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






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






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






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






30. Bbenign activity reported as malicious






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






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






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






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






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






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






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






38. Blocks all traffic from passing through the firewall except for traffic that is explicitly allowed - also known as restrictive access - best practice






39. Monitors network traffic to identify possible attacks






40. IDS response method using logging and notification






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






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






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






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






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






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






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






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






49. Session hijacking countermeasure






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