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






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






3. IDS response method using logging and notification






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






5. A DoS attack that subverts the normal "three way handshake" of TCP/IP by sending SYN packets - but no corresponding ACK packets






6. Monitors network traffic to identify possible attacks






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






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






9. Session hijacking countermeasure






10. 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






11. 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






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






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






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






15. 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






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






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






18. Level 2 firewall often used to filter web traffic






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






20. Generate random TCP sequence numbers and encrypt traffic countermeasure what attacks






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






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






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






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






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






26. User / registered ports






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






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






29. Firewall with several NICs connected to different networks






30. An attacker redirects traffic by falsifying the IP address requested by ARP request






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






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






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






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






35. Malicious activity not reported or detected






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






37. Dynamic / private ports






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






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






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






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






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






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






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






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






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






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. IP - email - website - DNS - and ARP






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






50. Packet filtering - proxies - stateful inspection