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 method - used by switches and email servers - of delivering messages which are temporarily held by an intermediary before being sent to their final destination






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






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






4. A physical or logical subnetwork that houses systems accessible to a larger untrusted network - usually the Internet - also known as DMZ






5. 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






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






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






8. 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






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






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






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






12. Session hijacking countermeasure






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






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






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






16. Crashing a computer by sending oversized packets (over 64 bytes) that it doesn't know how to handle






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






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






19. Monitors network traffic to identify possible attacks






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






21. IDS response method using logging and notification






22. One process on every system - use local system resources - detect attacks that NIDS misses - examine data after decrypted - can be OS specific - more expensive






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






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






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






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






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






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






29. Firewall with several NICs connected to different networks






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






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






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






33. 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






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






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






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






37. Twisted pair cable with speed capability of 1Gbps






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






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






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






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






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






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






44. 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






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






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






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






48. 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






49. Packet filtering - proxies - stateful inspection






50. User / registered ports