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. Used to pass data from one VLAN to another






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






3. IDS response method using logging and notification






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






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






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






7. 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






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






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






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






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






12. Head of a packet contains...






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






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






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






16. 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






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






18. Acts as an organizations internal phone system






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






20. Bbenign activity reported as malicious






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






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






23. Malicious activity not reported or detected






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






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






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






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






28. Firewall with several NICs connected to different networks






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






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






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






32. Web servers - FTP servers - DNS servers - mail servers should be located on the _____________






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






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






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






36. 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






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






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






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






40. 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






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






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






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






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






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






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






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






49. Packet filtering - proxies - stateful inspection






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