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 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






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






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






4. 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






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






6. Twisted pair cable with speed capability of 1Gbps






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






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






9. 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






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






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






12. Level 2 firewall often used to filter web traffic






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






28. Monitors network traffic to identify possible attacks






29. 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






30. IDS that relies on usage patterns and baseline operation - can ID new vulnerability - high rate of false alarms






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






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






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






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






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






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






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






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






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






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






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






42. Attack where an attacker intercepts traffic and tricks parties at either end into believing they are communicating with each other






43. Take control of a session between a server and client - the users gets kicked off the session while the attacker inserts himself into the session by sending a reset request to the client






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






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






46. Firewall with several NICs connected to different networks






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






48. Dynamic / private ports






49. Twisted pair cable with speed capability of 10Mbps






50. Session hijacking countermeasure