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. Dynamic / private ports






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






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






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






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






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






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






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






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






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






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






12. An application layer gateway works at this layer of the OSI model






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






14. Twisted pair cable with speed capability of 10Mbps






15. Collection on honeypots






16. A flaw in TCP/IP to verify that a packet really comes from the addess indicated in the IP header leads to this attack






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






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






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






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






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






22. 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






23. IDS response method using logging and notification






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






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






26. 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






27. Packet filtering - proxies - stateful inspection






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






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






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






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






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






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






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






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






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






37. 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






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






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






40. A packet filtering firewall works at this layer of the OSI model






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






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






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






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






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






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






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






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






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






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