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






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






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






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






5. Session hijacking countermeasure






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






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






8. 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






9. 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






10. Twisted pair cable with speed capability of 1Gbps






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






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. 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






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






15. 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






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






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






18. 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






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






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






21. IPS response method - terminate process/session - block/reject and redirect network traffic






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






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






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






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






26. 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






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






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






29. Used to pass data from one VLAN to another






30. Dynamic / private ports






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






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






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






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






35. Level 2 firewall often used to filter web traffic






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






37. Acts as an organizations internal phone system






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






39. A group of hosts on logical network segment that communicate as if they were attached to the same broadcast domain - regardless of their physical location






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






41. Malicious activity not reported or detected






42. User / registered ports






43. Man in the middle attack where the content of an intercepted message is altered before it is sent on






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






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






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






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






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






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






50. Head of a packet contains...