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






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






3. Head of a packet contains...






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






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






6. Bbenign activity reported as malicious






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






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






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






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






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






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






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






15. Session hijacking countermeasure






16. Used to pass data from one VLAN to another






17. Unauthenticated Windows session where an attacker can gather list of users - groups - machines - shares - user and host SID






18. 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






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






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






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






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






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






24. Twisted pair cable with speed capability of 10Mbps






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






26. Dynamic / private ports






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






28. 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






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






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






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






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






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






36. Level 2 firewall often used to filter web traffic






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






38. Malicious activity not reported or detected






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






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






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






42. Acts as an organizations internal phone system






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






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






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






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






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






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






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






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