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






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






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






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






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






6. A variation of a smurf attack using UDP






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






8. Bbenign activity reported as malicious






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






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






11. 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






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






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






14. User / registered ports






15. 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






16. Level 2 firewall often used to filter web traffic






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






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






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






21. 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






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






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






24. 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






25. Firewall with two NICs - one internal and one external facing - NAT is often used with this firewall






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






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






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






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






30. Attempt to block service or reduce activity by overloading the victim machine with ping requests






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






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






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






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






35. Malicious activity not reported or detected






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






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






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






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






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






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






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






43. Twisted pair cable with speed capability of 10Mbps






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






45. Firewall with several NICs connected to different networks






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






47. 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






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






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






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