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Test your basic knowledge |
CISSP Telecom And Network Security
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Subjects
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certifications
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it-skills
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cissp
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. Type of firewall that keeps track of each communication session. It must maintain a state table that contains data about each connection. 3rd generation firewall - runs at the network layer.
Blue Boxing
Stateful Firewall
Integrated Services Digital Network (ISDN)
Reverse Address Resolution Protocol (RARP )
2. Type of LAN and MAN technology - usually used for backbones - that uses token-passing technology and has redundant rings in case the primary ring goes down.
Layers in the OSI Model
Full-Duplex
Fiber Distributed Data Interface (FDDI)
ThinNet - aka 10base2
3. Protocol that increases address size from 32 bits to 128 bits
Loki Attack
Wireless Application Protocol (WAP)
IPv6
Multi-protocol Label Switching
4. An older protocol that was used by ISP's to encapsulate data to be sent over dial up connections
Digital Subscriber Line (DSL)
Serial Line Internet Protocol (SLIP)
Shared Key Authentication (SKA)
Dedicated Links
5. Type of firewall that uses a proxy for each service and can understand and make decisions on the protocols used and the commands within those protocols - runs at the application layer.
OSI Layer 7: Application
Synchronous Data Link Control (SDLC)
Ring Topology
Application Proxy Firewall
6. Strengths of a type of firewall: Better security than packet filtering. Looks at all info in the packet - up to the application layer. Breaks the connection between trusted and untrusted systems. Weaknesses include limited number of applications supp
Packet Switching
Proxy Firewall Strengths
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Commonly used in Internet.
7. Type of network layout that separates and group computers logically.
T1
VLAN
Port Numbers
Carrier sense multiple access with collision detection (CSMA/CD)
8. Type of firewall that Inspects incoming/outgoing messages for malicious information. If approved - transfers an isolated copy from one network to another. 2nd generation firewall.
Proxy Firewall
Cable Modem
802.11i
Bastion Host
9. Type of cabling problem where loss of signal strength occurs as it travels due to cable exceeding its recommended length.
OSI Layer 5: Session Layer
Dual-Homed Firewall
Attenuation
Layer 2 Tunneling Protocol (L2TP)
10. Type of firewall that looks at header information to make decisions on whether a packet is deemed acceptable. This type does not look as deep within the packet as an application level proxy - runs at the session layer.
Circuit Level Proxy Firewall
T1
Spam over Internet Telephony (SPIT)
Spread Spectrum
11. Type of network device that is the simplest type of connectivity because it only repeats and amplifies electric signals between cable segments. Works at the physical layer.
Crosstalk
Repeaters
Extensible Authentication Protocol (EAP)
Packet Filtering Firewall
12. Transmits high speed bandwidth over phone lines. Provides data rates up to 52 Mpbs using line of 1000 feet or less. Must be within 2.5 miles of a central office.
Service Set ID (SSID)
Noise
Digital Subscriber Line (DSL)
Port Numbers
13. A simplified version of X.25 - without the error checking that was done on the network. It handles error checking at the end node - which helps improve speed dramatically.
Frame Relay
OSI Data encapsulation
Fiber Distributed Data Interface (FDDI)
Switched Virtual Circuit (SVC)
14. The original technique to digitized voice with 8 bits of sampling 8 -000 times per second - which yields 64 Kbps for one voice channel.
Token Passing
Pulse Code Modulation (PCM)
Token Ring (802.5)
Integrated Services Digital Network (ISDN)
15. Type of wireless authentication where a shared WEP key is used to encrypt a nonce for authentication.
Packet Filtering Firewall
OSI Layer 1: Physical
DOS attacks from flooding
Shared Key Authentication (SKA)
16. OSI layer that has services and protocols required by the user's applications for network functionality. Example protocols include HTTP - SMTP - FTP - Telnet.
OSI Layer 7: Application
ARP Poisoning
Token Passing
Pulse Code Modulation (PCM)
17. VPN protocol that works at the data link layer - can only run in IP networks - and provides encryption and encapsulation. This is Microsoft's VPN solution.
Point-To-Point Tunneling Protocol (PPTP)
Noise
SOCKS Firewall
802.11a
18. Encapsulation protocol for telecommunication connections. Replaced SLIP and is ideal for connection different types of devices over serial lines.
OSI Layer 4: Transport Layer
Point-To-Point (PPP)
Virtual Private Network (VPN)
Wired Equivalent Privacy (WEP)
19. Faster because processing is done in the kernel. One network stack is created for each packet. 5th generation firewall - runs at the application layer.
Wireless Application Protocol (WAP)
Synchronous Data Link Control (SDLC)
High Level Data Link Control (HLDC)
Kernel Proxy Firewall
20. In the OSI layer 5 - these are the types of what?
OSI Layer 2: Data Link Layer
Application Proxy Firewall
Simplex: One direction.
Proxy Firewall
21. Layer 3 - layer 4 - and other layer switches have more enhanced functionality than layer 2 switches. Combines switching and routing technologies - packet inspection - traffic prioritization - and quality of service (QoS).
Wireless Application Protocol (WAP)
Fiber Distributed Data Interface (FDDI)
ARP (Address Resolution Protocol)
Multilevel Switching
22. Wireless communication that distributes individual signals across the allocated frequencies.
802.11
Shared Key Authentication (SKA)
SPIM
Spread Spectrum
23. As they travel down the OSI model on the source computer - each layer adds its own information so the corresponding layer on the destination machine knows how to process the data.
Wireless Application Protocol (WAP)
Classless inter-domain routing (CIDR)
SOCKS Firewall
OSI Data encapsulation
24. Most commonly used LAN implementation today. Considered a "chatty" protocol because it allows all systems to hear each other's broadcasts. Has many collisions because all systems share the same medium. Can operate at 10 to 1000 Mbps.
Dedicated Links
Commonly used in Ethernet.
Ethernet (802.3)
OSI Layer 1: Physical
25. Type of firewall that lies between the perimeter router and and LAN.
Screened Host Firewall
LLC (Logical Link Control - 802.2)
Synchronous Communication
Commonly used in Internet.
26. Type of wireless authentication where the device does not need to provide a key for authentication. Usually - only the SSID is required and plaintext transmission occurs.
Open System Authentication (OSA)
Synchronous Data Link Control (SDLC)
Repeaters
Ring Topology
27. Identifys a WLAN. Can be used to segment environments into different WLANS.
Committed Information Rate (CIR)
Service Set ID (SSID)
Tree Topology
Spread Spectrum
28. VPN protocol that can run in other networks (frame relay - X.25 - ATM). Does not provide encryption - lacks the security to be called a true "VPN" solution.
Layer 2 Tunneling Protocol (L2TP)
OSI Data encapsulation
OSI Layer 7: Application
802.15
29. Wireless LAN standard that operates in a 2.4Ghz range - 11Mbps - DSSS
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
802.11b
Distributed Environment Challenge
Definition of Protocol
30. Wireless communication that applies sub-bits to a message (chips) and the receiver uses the chips to re-assemble the message based on the chipping code. It uses all available bandwidth - high throughput of 11Mbps.
Carrier sense multiple access with collision detection (CSMA/CD)
Half-Duplex
Direct Sequence Spread Spectrum (DSSS)
Multistation Access Unit (MAU)
31. Protocol that translates IP address into a MAC address (physical Ethernet address)
ARP (Address Resolution Protocol)
Wide Area Network (WAN)
Serial Line Internet Protocol (SLIP)
High Level Data Link Control (HLDC)
32. Strengths of a type of firewall: application independence - high performance - and scalability. Weaknesses include low security - no protection above the network layer.
Direct Sequence Spread Spectrum (DSSS)
Bus Topology
Packet Filtering Firewall
OSI Layer 4: Transport Layer
33. Firewall that does not require a proxy for each service; does not provide detailed access control; but does provide for a wider range of protocols.
Mesh Topology
OSI Layer 4: Transport Layer
Virtual Private Network (VPN)
Application Proxy vs. Circuit Level
34. Wireless LAN standard. Variations include 802.11a - b - f - g - and i. Commonly accepts are 802.11b and g.
Twisted Pair Cables
Coaxial Cables
802.11
Synchronous Optical Networks (SONETS)
35. Created because it was clear that available IP addresses were running out. Provides flexibility to increase or decrease the IP classes sizes as necessary.
Ring Topology
Remote Access Servers
Private Branch Exchange (PBX)
Classless inter-domain routing (CIDR)
36. Protocol based on the first version - however this version allows for fixed bandwidth to be allocated for specific applications.
FDDI-2
802.16
Digital Subscriber Line (DSL)
Dynamic Packet Filtering
37. Type of topology that uses a bus that does not have a one linear cable - but instead uses branches of cables. Commonly used in Ethernet.
Router
CBC-MAC Protocol (CCMP)
Synchronous Communication
Tree Topology
38. Protocol that is used by remote users to authenticate over PPP lines. Sends passwords over clear text. Vulnerable to MITM attacks.
Shared Key Authentication (SKA)
Password Authentication Protocol (PAP)
Layers in the OSI Model
Wireless Application Protocol (WAP)
39. Protocol stack used instead of TCP/IP on wireless devices. The "gap" in this protocol involves translating its secure traffic to SSL or TLS - which is typically done by a 3rd party.
Bluejacking
Iterated Association
Remote Access Servers
Wireless Application Protocol (WAP)
40. In a token ring network - each computer is connected to this - which acts as a central hub.
Open System Authentication (OSA)
Multistation Access Unit (MAU)
Challenge Handshake Authentication Protocol (CHAP)
Point-To-Point (PPP)
41. Type of network layout that is a large geographical region connecting more that one LAN.
Wide Area Network (WAN)
ICMP (Internet Control Message Protocol)
OSI Layer 3: Network Layer
Frame Relay
42. Type of cable where STP and UTP (shielded and unshielded) cables are the most popular - cheapest - and easiest to work with. However - easiest to tap into - have cross talk issues - and are vulnerable to electromagnetic interference (EMI).
Pulse Code Modulation (PCM)
ARP Poisoning
Classless inter-domain routing (CIDR)
Twisted Pair Cables
43. Altering an ARP table so an IP address is mapped to a different MAC address. Results in traffic being routed to an attacker's computer.
ARP Poisoning
High Level Data Link Control (HLDC)
Commonly used in FDDI.
Distributed Environment Challenge
44. Type of cabling problem where data is corrupted going from end to end due to surrounding devices.
Noise
Challenge Handshake Authentication Protocol (CHAP)
Open Relay
X.25
45. OSI layer 2 Sub-layers. The first provides a standard interface for the network protocol being used. The second provides a standard interface for the physical layer protocol being used.
Committed Information Rate (CIR)
LLC (Logical Link Control - 802.2)
Metropolitan Area Network (MAN)
OSI Layer 1: Physical
46. Type of ethernet implementation that uses twisted-pair copper wiring and transmits at 100Mbps.
Reverse Address Resolution Protocol (RARP )
Stateful Firewall
Digital Subscriber Line (DSL)
10baseT
47. This is a standard for fiber-optic cabling and uses self-healing network rings. This standard describes the interfaces that can be used over fiber lines and the signaling that can be employed. Works at the physical layer of the OSI model.
Switch
T1
Synchronous Optical Networks (SONETS)
Committed Information Rate (CIR)
48. This network technology determines which system will send data based on which one has the token.
Multistation Access Unit (MAU)
Cable Modem
Token Passing
LLC (Logical Link Control - 802.2)
49. Communication devices that are not synchronized - meaning all devices can send data at will - send a sequence of bits framed with a start and stop bit.
Asynchronous Communication
Synchronous Optical Networks (SONETS)
IPSec
Direct Sequence Spread Spectrum (DSSS)
50. Problems: If one station experiences a problem - it can negatively affect surrounding computers on the same ring.
802.16
SPIM
OSI Layer 6: Presentation
Ring Topology