SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
GIAC
Start Test
Study First
Subjects
:
certifications
,
giac
,
it-skills
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. Not a replacement for firewalls - hardening - strong policies - or other DiD methods - low maintenance - inexpensive
Alteration of code
IDS not
TFTP
Snort
2. Four layers - Network Layer - Internet Layer - Transport Layer - Application layer
Permutation
The TCP/IP model
Rotation?
Arbitrary substitution
3. It allows the transport layer to detect when the UDP headers or the payload have been modified in transit
Rootkit
Defense in depth
The OSI model
Checksum in UDP
4. Replicates traffic onto all ports - no traffic monitoring - cannot control which ports should or shouldn't receive frames - forming a large collision domain.
the application layer
SYN flood
When talking about protocols and referencing layers - what stack is used
Hubs
5. UDP based infection - infected through vulnerability in SQL server - caused DoS on saturated networks
Alteration of code
What range is a class B network?
SQL Slammer Worm
Router
6. Intrusion detection system - it reports attacks against monitored systems/networks
Firewall
IDS
Some malware capabilities
Shallow packet inspection
7. Parasitic malware - boot record infector - macro - COM/Script program infector - EXE program infector
Ack Piggybacking
Rootkit
Types of viruses
Network stumbler
8. 1. physical 2. data 3. network 4. transport 5. session 6. presentation 7. application
Group
The OSI Protocol Stack
Router
The conficker worm
9. risk = threat x vulnerability - impossible to eliminate - security is an exercise in loss reduction
Buffer overflow
Boot record infector
SQL Slammer Worm
Risk
10. low interaction production honeypot - network daemon that can simulate other hosts - each host can appear as a different OS
No State Inspection ACK flag set
Buffer overflow
Denial of service
Honeyd
11. Not frequently seen on LANs because of expense - because of its traffic predictability and high bandwidth support - it's good for video streaming - encapsulates common protocols - uses virtual path identifiers to create end to end connectivity - has
Asynchronous Transfer Mode
Some malware propagation techniques
No State Inspection ACK flag set
Some FTP dangers
12. It interacts with data and prepares it to be transmitted across the network. It ensures reliable connectivity from end-to-end
Brute force
Internet
The transport layer
Some network design objectives
13. Physical layer - Data link layer - Network Layer - Transport Layer - Session Layer - Presentation Layer - Application Layer
The OSI model
What threats should be protected against - based on threat levels
A netmask
Router
14. Going around with equipment to detect wireless networks
Trojan horse
What range is a class A network?
Wardriving
Log monitoring work?
15. Considered to be a perimeter device
Race conditions
Router
No State Inspection ACK flag set
Some reasons to use TCP over UDP
16. Simplest form of a research honeypot - useful in identifying nature of TCP scans - allows attacker to complete 3-way handshake - listens on a defined port - logs incoming requests for analysis
Nmap scanning techniques
Logic bomb
Some malware capabilities
A netcat listener
17. Stateful firewalls maintain state of traffic flows
Stateful firewall
Some common UDP ports
ATM work
TFTP
18. Infects MBR - no network spreading potential
UDP packet headers
Boot record infector
Network stumbler
ATM work
19. size is whatever the length of the UDP portion of the packet. Could be as large as 65 -535
Risk
File Integrity checking work
Datagram length of a UDP packet
When implementing protocols - what stack should be used?
20. Weakness in a system - inherent in a complex system - majority are due to poor coding - gateway by which threats are manifested
Stateful firewall
Overview of TCP
Denial of service
Vulnerabilities
21. Migrate to WPA2 - use strong authentication like PEAP or TTLS - audit network installations - require mutual auth between client and infrastructure equipment
The presentation layer
Firewall
Parasitic malware
Best way to protect wireless networks
22. logic bomb - trojan horse - trap door
The conficker worm
Some types of malicious code
IDS
Shallow packet inspection
23. Handles the network address scheme and connectivity of multiple network segments. It handles communication.
The network layer
What's an easy way to test encryption?
Rootkit
Address resolution protocol
24. keeps the same letters - but changes the position within the text - easy to break - can be combined with substitution
What ways should the crypto key be protected?
When setting up a virtual circuit
Nmap
Permutation
25. packet filter firewalls rely on TCP flags to determine connection state. Attacker can send ACK packets only to bypass firewall.
OS Command Injection defenses
Honeypot
No State Inspection ACK flag set
War Dialing
26. Maintains complete TCP connection state and sequencing through 2 connections - address translation built-in by virtue of second connection above
Proxy or application gateway
Anomaly analysis work
To close a TCP session
Overview of TCP
27. Small program triggered by an event that provides an action. E.g. scheduled file removal if countdown isn't reset - ie: employee was fired
Address Resolution Protocol (ARP)
A netmask
The TCP/IP model
Logic bomb
28. When someone has compromised the integrity of data or a program. Allows attackers to create backdoors.
Alteration of code
SYN flood
ACK piggybacking
Address resolution protocol
29. Publish separate mail - web - and DNS servers to the internet - provide appropriate access from internal network to internet - protect internal from external attack - provide defense in depth - protect all aspects of the system
IDS not
Some network design objectives
Bus Topology
OS Command Injection defenses
30. Unified data carrying service - replacing from replay and ATM
Worms
Shallow packet inspection
The three goals of security
Multi protocol label switching
31. Trying to ID modems in a telephone exchange that may be susceptible to compromise
The threat vector analysis in defense in depth
TFTP
Hubs
War Dialing
32. An FTP that allows downloads only if the user knows the exact name of the file they're looking for
NIDS advantages
Rotation?
Logic bomb
A blind FTP
33. A list of files is defined that should be monitored for a change - HIDS software calculates a one-way hash for each file - if a change is made to the file - the hash is changed
Buffer overflow
Log monitoring work?
File integrity checking work
What range is a class C network?
34. A time of check/time of use attack that exploits the difference in between when a security control was applied and the time the service was used.
Proxy or application gateway
Some other UDP based protocols
Race conditions
A blind FTP
35. A hash is produced when applied to a monitored file. The hash always generates the same value unless a change was made. HIDS software checks the hashes of monitored files and if a change is found - analyst is notified. - ie: tripwire
Address resolution protocol
IDS signature analysis work
What threats should be protected against - based on threat levels
File Integrity checking work
36. 8 bytes per packet - UDP SRC port - UDP DST Ports - UDP length - UDP Checksum
UDP packet headers
Some firewall challenges
The conficker worm
A netcat listener
37. Netmasks or subnets provide a method for identifying what portion of an address is the network - and what portion is the host
File integrity checking work
No State Inspection ACK flag set
A netmask
The OSI model
38. 1 and 2 - Voice/Low speed data - 3 - Voice/Data 10Mb - 4 - Voice/Data 16Mb - 5 - 5e - Voice/Data 100Mb to 1Gb - 6 - Standard for gigabit
The four basic approaches to defense in depth
The different cable categories
To close a TCP session
Permutation
39. A low end firewall that can quickly be deployed using existing hardware. They examine packets themselves with no content.
Nmap
Ciphertext
Rootkit
Stateless packet filter
40. Combines the functionality of a hub and bride into a single device - keeps track of MACs attached to each port
Plaintext
UDP packet headers
Some ways to bypass firewall protections
Switches
41. Very simplistic. All systems are attached to the same cable segment. Rarely used because they're unreliable - low fault tolerance - poor traffic isolation - with limited scalability
Bus Topology
Nmap
What range is a class A network?
Some FTP dangers
42. Switches along the path can be requested to allocate the desired amount of bandwidth. If the circuit has the required bandwidth - the circuit is set up.
LAN
When setting up a virtual circuit
Some disadvantages of honeypots
Trojan horse
43. Allows admins to remotely access a system for troubleshooting. - E.g VNC - GoToMyPc - PC Anywhere
UDP packet headers
Remote maintenance
Snort
Honeypot
44. NTP - BootP/DHCP - NFS file systems - SNMP - TFTP
No State Inspection ACK flag set
Some network design objectives
Some other UDP based protocols
IDS data normalization
45. Network scanner.
Hping
Some firewall benefits
Nmap
the application layer
46. Most common approach - firewall - VPN - intrusion detection - AV - disk encryption - all parts of the organization receive equal protection - particularly vulnerable to malicious inside attacks
Denial of service
Shallow packet inspection
The Uniform Protection to defense in depth
A network protocol
47. Attempt to manipulate or trick a person into providing information or access - bypass network security by exploiting humans - vector is often outside attack by telephone or visitor inside
Social engineering
Shallow packet inspection
What threats should be protected against - based on threat levels
A netmask
48. TCP/IP - the IP protoco - The core routing protocol of the internet - - deals with transmission of packets between end points - defines the addressing scheme for the internet
Alteration of code
When implementing protocols - what stack should be used?
Logic bomb
A netmask
49. Slow - requires stateful data tracking - inspects all fields - including variable-length fields
Best way to protect wireless networks
Defense in depth
Some common UDP ports
Deep packet inspection
50. A TCP version of ping - sends custom TCP packets to a host and listens for replies - enables port scanning and spoofing simultaneously
Wardriving
Hping
The physical layer stack
Some firewall challenges