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






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






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






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






5. Dynamic / private ports






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






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






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






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






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






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






12. 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






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






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






15. IDS response method using logging and notification






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






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






18. Session hijacking countermeasure






19. Acts as an organizations internal phone system






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






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






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






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






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






25. 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






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






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






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






29. Head of a packet contains...






30. Protocol used to map an known IP address to its corresponding media access control (MAC) address






31. Monitors network traffic to identify possible attacks






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






33. Firewall with several NICs connected to different networks






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






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






36. User / registered ports






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






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






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






40. Level 2 firewall often used to filter web traffic






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






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






43. 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






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






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






46. Bbenign activity reported as malicious






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






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






49. 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






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







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