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






2. Twisted pair cable with speed capability of 10Mbps






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






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






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






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






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






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






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






10. 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






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






12. 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






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






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






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






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






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






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






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






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






21. Used to pass data from one VLAN to another






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






23. Packet filtering - proxies - stateful inspection






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






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






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






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






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






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






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






31. Bbenign activity reported as malicious






32. User / registered ports






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






34. Collection on honeypots






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






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






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






38. Session hijacking countermeasure






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






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






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






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






43. 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






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






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






46. Dynamic / private ports






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






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






49. 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






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