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






2. Monitors network traffic to identify possible attacks






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






4. Malicious activity not reported or detected






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






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






7. Twisted pair cable with speed capability of 10Mbps






8. User / registered ports






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






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






11. Dynamic / private ports






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






13. IDS response method using logging and notification






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






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






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






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






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






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






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






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






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






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






24. Packet filtering - proxies - stateful inspection






25. 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






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






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






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






29. Used to pass data from one VLAN to another






30. A ping message is broadcast to an entire network with a spoofed source IP addess of the victim computer - flooding the victim computer with responses during this attack






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






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






33. 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






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






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






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






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






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






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






40. 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






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






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






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






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






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






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






47. 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






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






49. Level 2 firewall often used to filter web traffic






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