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 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






2. Monitors network traffic to identify possible attacks






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






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






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






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






7. Session hijacking countermeasure






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






9. Twisted pair cable with speed capability of 1Gbps






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






11. User / registered ports






12. Malicious activity not reported or detected






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






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






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






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






17. 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






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






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






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






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






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






23. IP - email - website - DNS - and ARP






24. Capture and analyze network traffic - also known as packet analyzer - sniffer - network analyzer






25. Collection on honeypots






26. One device per network segment - does not use local system resources - can't examine encrypted traffic - OS independent - less expensive






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






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






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






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






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






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






33. Used to pass data from one VLAN to another






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






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






36. Firewall with several NICs connected to different networks






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






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






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






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






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






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






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






44. Variation of the SYN flood where SYN packets are spoofed to have the same source and destination IP address and port






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






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






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






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






49. 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






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