Test your basic knowledge |

Comptia Security +: Network Security

Instructions:
  • Answer 50 questions in 30 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. 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






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






3. 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






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






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






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






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






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






10. Session hijacking countermeasure






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






12. Bastion host - dual homed firewall - multi homed firewall - screened host - screened subnet






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






31. Acts as an organizations internal phone system






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






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






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






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






36. Head of a packet contains...






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






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






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






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






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






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






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






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






45. Used to pass data from one VLAN to another






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






47. Multiple network defense components are placed throughout the organizations assets and the network is properly segmented






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






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






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