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






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






3. Dynamic / private ports






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






5. 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






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






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






8. Twisted pair cable with speed capability of 10Mbps






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






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






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






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






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






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






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






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






17. Packet filtering - proxies - stateful inspection






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






19. Firewall with several NICs connected to different networks






20. Level 2 firewall often used to filter web traffic






21. Protocol used to map an known IP address to its corresponding media access control (MAC) address






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






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






24. Collection on honeypots






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






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






27. 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






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






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






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






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






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






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






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






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






36. Twisted pair cable with speed capability of 1Gbps






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






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






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






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






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






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






43. 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






44. A variation of a smurf attack using UDP






45. Head of a packet contains...






46. Monitors network traffic to identify possible attacks






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






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






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






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