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






2. Monitors network traffic to identify possible attacks






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






4. 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






5. A variation of a smurf attack using UDP






6. Twisted pair cable with speed capability of 10Mbps






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






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






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






10. 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






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






12. Level 2 firewall often used to filter web traffic






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






29. Head of a packet contains...






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






31. Malicious activity not reported or detected






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






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






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






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






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






37. Bbenign activity reported as malicious






38. User / registered ports






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






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






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






42. Collection on honeypots






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






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






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






46. 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






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






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






49. Packet filtering - proxies - stateful inspection






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