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. Head of a packet contains...






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






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






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. Man in the middle attack where the attacker captures the traffic and sends it to the original recipient without altering the intercepted data






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






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






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






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






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






11. 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






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






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






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






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






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






17. Twisted pair cable with speed capability of 10Mbps






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






19. 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






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






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






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






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






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






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






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






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






28. Cable designed for transmission at higher speeds (100Mbps - 2Gbps) and longer distances (2km) - expensive -eliminates signal tapping






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






30. 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






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






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






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






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






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






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






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






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






39. Twisted pair cable with speed capability of 1Gbps






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






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






42. Collection on honeypots






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






44. User / registered ports






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






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






47. 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






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






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






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