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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.
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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. 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
Open Relay
Point-To-Point Tunneling Protocol (PPTP)
Proxy Firewall Strengths
Point-To-Point (PPP)
2. 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.
Wireless Application Protocol (WAP)
Open System Authentication (OSA)
VoIP
Commonly used in FDDI.
3. Used when companies do not want systems to know internal hosts IP addresses. Enables companies to use private - nonroutable IP addresses.
802.16
Network Address Translator (NAT)
Open Relay
Circuit Level Proxy Firewall
4. 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.
Layer 2 Tunneling Protocol (L2TP)
Fiber Distributed Data Interface (FDDI)
OSI Layer 6: Presentation
IPSec
5. Wireless LAN standard. Variations include 802.11a - b - f - g - and i. Commonly accepts are 802.11b and g.
Wide Area Network (WAN)
Stateful Firewall
ThickNet - aka 10base5.
802.11
6. Type of network that allows large IP ranges to be divided into smaller - logical - and easier to maintain network segments.
Simplex: One direction.
Ring Topology
Router
Subnetting
7. 7: Application - 6: Presentation - 5: Session - 4: Transport - 3: Network - 2: Data Link - 1: Physical - Remember 'All People Seem To Need Data Processing'
Layers in the OSI Model
Temporal Key Integrity Protocol (TKIP)
High Level Data Link Control (HLDC)
Port Numbers
8. Premium service offered by service providers in frame relay networks that guarantees a company a specified amount of bandwidth.
Token Passing
Attenuation
Committed Information Rate (CIR)
Application Proxy Firewall
9. This dedicated connection provides up to 1.544 Mbps bandwidth over 1 T1 and 24 time divided channels.
Bridge
Subnetting
T1
Spread Spectrum
10. 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.
Simplex: One direction.
Synchronous Data Link Control (SDLC)
Ethernet (802.3)
Layer 2 Tunneling Protocol (L2TP)
11. A technique that allows multiple layers of nesting. Example - IPSec tunnel can originate or terminate at a different IPSec site along the way.
Iterated Association
Kernel Proxy Firewall
OSI Data encapsulation
ThinNet - aka 10base2
12. Most expensive type of WAN connection because the fee is based on distance between the two points rather than the amount of bandwidth used. Examples - T1 and T3.
Frame Relay
Dedicated Links
Screened Sub-Net
Private Branch Exchange (PBX)
13. 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.
VoIP
Application Proxy Firewall
Commonly used in FDDI.
Tree Topology
14. Security wireless standard that enables data transfers to be encrypted. Static encryption keys among clients - short 40 bit keys - RC4 encryption - ineffective use of 24 bit IV's - and no packet integrity.
Wired Equivalent Privacy (WEP)
Point-To-Point Tunneling Protocol (PPTP)
Full-Duplex
Switch
15. Protocol that is reliable and connection-oriented - which means it ensures delivery through acknowledgements - sequencing - detection and correction.
Tree Topology
TCP
Circuit Switching
Open System Authentication (OSA)
16. Wireless LAN standard that operates in a 2.4Ghz range - 11Mbps - DSSS
FDDI-2
Fiber-optic Cables
802.11b
Service Set ID (SSID)
17. Proprietary protocol that enables secondary devices to communicate with primary stations or mainframes in an IBM architecture. Developed in the mid-70's for use in a systems network architecture (SNA) environment. First synchronous - link layer - bit
Classless inter-domain routing (CIDR)
Dedicated Links
Permanent Virtual Circuit (PVC)
Synchronous Data Link Control (SDLC)
18. Both directions - only one application can send information at a time
Direct Sequence Spread Spectrum (DSSS)
Asynchronous Transfer Mode (ATM)
Blue Boxing
Half-Duplex
19. In a token ring network - each computer is connected to this - which acts as a central hub.
CBC-MAC Protocol (CCMP)
OSI Layer 3: Network Layer
Multistation Access Unit (MAU)
Subnetting
20. Standard for transmitting data across the Internet. One is reliable and connection oriented. The other is unreliable and connectionless.
OSI Layer 3: Network Layer
IGMP
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Attenuation
21. Protocol that is best-effort - connectionless - and does not sent acknowledgements.
Dynamic Packet Filtering
CBC-MAC Protocol (CCMP)
Proxy Firewall
UDP
22. Problems: If one station experiences a problem - it can negatively affect surrounding computers on the same ring.
FDDI-2
Repeaters
Ring Topology
Synchronous Communication
23. Protocol that resolves host names into IP addresses and has distributed databases all over the Internet to provide name resolution.
Kernel Proxy Firewall
Service Set ID (SSID)
DNS (Domain Name System)
Stateful Firewall
24. Protocol that is used by remote users to authenticate over PPP lines. Sends passwords over clear text. Vulnerable to MITM attacks.
Kernel Proxy Firewall
Password Authentication Protocol (PAP)
Digital Subscriber Line (DSL)
Serial Line Internet Protocol (SLIP)
25. VPN protocol that works at the network layer - handles multiple connections - provides secure authentication and encryption. Tunnel mode option (payload and header encrypted) - or transport mode (only payload is encrypted).
Asynchronous Communication
Password Authentication Protocol (PAP)
IPSec
Layer 2 Tunneling Protocol (L2TP)
26. Standard that addresses wireless MAN technologies.
802.16
Spam over Internet Telephony (SPIT)
Plenum-rated Cables
Network Address Translator (NAT)
27. Type of ethernet implementation that uses twisted-pair copper wiring and transmits at 100Mbps.
Noise
10baseT
TCP
Repeaters
28. Type of firewall that is a proxy-based firewall solution. It is circuit-based and does not provide any application-based proxies.
Classless inter-domain routing (CIDR)
High Level Data Link Control (HLDC)
Password Authentication Protocol (PAP)
SOCKS Firewall
29. 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.
Half-Duplex
Isochronous Communication Processes
Asynchronous Transfer Mode (ATM)
Digital Subscriber Line (DSL)
30. Created because it was clear that available IP addresses were running out. Provides flexibility to increase or decrease the IP classes sizes as necessary.
Classless inter-domain routing (CIDR)
IGMP
Proxy Firewall Strengths
Carrier sense multiple access with collision detection (CSMA/CD)
31. Type of cabling problem where data is corrupted going from end to end due to surrounding devices.
Service Set ID (SSID)
Packet Filtering Firewall
Noise
Cable Modem
32. This network technology determines which system will send data based on which one has the token.
DNS (Domain Name System)
Application Proxy Firewall
Crosstalk
Token Passing
33. 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.
Synchronous Communication
LLC (Logical Link Control - 802.2)
Extensible Authentication Protocol (EAP)
Stateful Firewall
34. OSI layer that has services and protocols required by the user's applications for network functionality. Example protocols include HTTP - SMTP - FTP - Telnet.
Source Routing
ThinNet - aka 10base2
Full-Duplex
OSI Layer 7: Application
35. 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.
ARP Poisoning
Router
OSI Data encapsulation
802.11b
36. Server that can be configured to hang up and call back remote users - but this can be compromise by enabling call forwarding.
Wired Equivalent Privacy (WEP)
Network Address Translator (NAT)
Screened Sub-Net
Remote Access Servers
37. Type of firewall that lies between the perimeter router and and LAN.
Private Branch Exchange (PBX)
Screened Host Firewall
Synchronous Communication
OSI Layer 6: Presentation
38. Network where a dedicated virtual link is not set up - and packets can use many different dynamic paths to get to the same destination. This causes variable delays. Examples are frame relay and X.25
Packet Switching
ThickNet - aka 10base5.
Multilevel Switching
IGMP
39. Protocol based on the SDLC protocol - except it is an open protocol - supports full-duplex connections - and provides a higher throughput. It also provides polling - which enables secondary units to communicate with primary units.
VLAN
High Level Data Link Control (HLDC)
Layers in the OSI Model
Commonly used in FDDI.
40. Type of cable that is more expensive than UTP and STP - more resistant to EMI - can carry baseband and board band technologies.
Application Proxy vs. Circuit Level
ARP (Address Resolution Protocol)
Coaxial Cables
Private Branch Exchange (PBX)
41. The original technique to digitized voice with 8 bits of sampling 8 -000 times per second - which yields 64 Kbps for one voice channel.
IPv6
Pulse Code Modulation (PCM)
Synchronous Communication
Session Initiation Protocol (SIP)
42. Protocol for allowing multi-cast (one to many) communication
Direct Sequence Spread Spectrum (DSSS)
IGMP
Application Proxy vs. Circuit Level
Open Relay
43. OSI layer that prepares data for the network medium by framing it into LAN/WAN frames. Defines how the physical layer transmits the network packets. Protocols at this layer ARP (Address Resolution Protocol) - RARP (Reverse Address Resolution Protocol
Multistation Access Unit (MAU)
Mesh Topology
OSI Layer 2: Data Link Layer
Commonly used in Internet.
44. Type of authentication protocol that provides a framework to enable may types of authentication techniques to be used during PPP connections. It extends the possibilities to one-time passwords - token cards - biometrics - Kerberos - and digital certi
Direct Sequence Spread Spectrum (DSSS)
Extensible Authentication Protocol (EAP)
OSI Layer 6: Presentation
Layers in the OSI Model
45. Type of topology that Uses linear single cable for all computers attached. All traffic travels full cable and can be viewed by all other computers.
Packet Switching
Commonly used in Ethernet.
Shared Key Authentication (SKA)
OSI Layer 6: Presentation
46. These are used to connect multiple switches for traffic of the same classification. Example - two voice switches at a local phone company's central office.
Trunk Lines
Layer 2 Tunneling Protocol (L2TP)
Direct Sequence Spread Spectrum (DSSS)
Packet Switching
47. 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.
Network Address Translator (NAT)
ARP Poisoning
IGMP
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
48. Both directions - both applications can send information at a time. Session Layer Communication Modes
OSI Layer 2: Data Link Layer
Full-Duplex
Multilevel Switching
OSI Layer 4: Transport Layer
49. Network where a virtual connection that acts like a dedicated link between two systems is set up. Traffic travels in a predictable and constant manner. Example - telephone.
Circuit Switching
OSI Layer 7: Application
Cable Modem
Fiber Distributed Data Interface (FDDI)
50. Wireless LAN standard that operates in a 5Ghz range - 54Mpbs - and uses OFDM spread spectrum.
Application Proxy vs. Circuit Level
802.11a
Proxy Firewall Strengths
Trunk Lines
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