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






2. A feature of firewalls / routers that disguise the IP address of internal systems allowing connection to the Internet using one public address






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






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






5. IPS response method - terminate process/session - block/reject and redirect network traffic






6. Monitors network traffic to identify possible attacks






7. Collection on honeypots






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






9. Head of a packet contains...






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






11. Firewall with several NICs connected to different networks






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






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






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






15. Well known ports - allow administrative access - used for network services - considered only ports allowed to transmit traffic thru a firewall






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






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






18. 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






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






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






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






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






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






24. Malicious activity not reported or detected






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






26. One process on every system - use local system resources - detect attacks that NIDS misses - examine data after decrypted - can be OS specific - more expensive






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






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






29. Level 2 firewall often used to filter web traffic






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






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






32. User / registered ports






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






34. Packet filtering - proxies - stateful inspection






35. Used to pass data from one VLAN to another






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






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






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






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






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






41. 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






42. Twisted pair cable with speed capability of 10Mbps






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






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






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






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






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






48. An attacker redirects traffic by falsifying the IP address requested by ARP request






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






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