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 variation of a smurf attack using UDP






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






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






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






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






6. Head of a packet contains...






7. Malicious activity not reported or detected






8. 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






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






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






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






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






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






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






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






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






18. Collection on honeypots






19. 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






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






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






22. Bbenign activity reported as malicious






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






24. Session hijacking countermeasure






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






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






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






28. A group of hosts on logical network segment that communicate as if they were attached to the same broadcast domain - regardless of their physical location






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






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






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






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






33. 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






34. Acts as an organizations internal phone system






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






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






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






38. Twisted pair cable with speed capability of 1Gbps






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






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






41. Dynamic / private ports






42. Firewall with several NICs connected to different networks






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






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






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






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






47. Level 2 firewall often used to filter web traffic






48. IDS response method using logging and notification






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






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