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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. 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.
Point-To-Point Tunneling Protocol (PPTP)
Digital Subscriber Line (DSL)
Iterated Association
OSI Data encapsulation
2. Wireless LAN standard that operates in a 5Ghz range - 54Mpbs - and uses OFDM spread spectrum.
802.11a
ThickNet - aka 10base5.
802.11i
Isochronous Communication Processes
3. Protocol where all computers compete for the shard network cable - listen to learn when they can transmit data - susceptible to data collisions. Used by Ethernet.
Packet Switching
LLC (Logical Link Control - 802.2)
Carrier sense multiple access with collision detection (CSMA/CD)
Layers in the TCP/IP Model
4. Type of firewall that is a proxy-based firewall solution. It is circuit-based and does not provide any application-based proxies.
SOCKS Firewall
OSI Layer 1: Physical
FDDI-2
Switched Virtual Circuit (SVC)
5. 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.
Wireless Application Protocol (WAP)
Twisted Pair Cables
DNS (Domain Name System)
Point-To-Point (PPP)
6. 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.
Reverse Address Resolution Protocol (RARP )
Fiber Distributed Data Interface (FDDI)
Loki Attack
Challenge Handshake Authentication Protocol (CHAP)
7. Type of network device that divides networks into more controllable segments to ensure more efficient use of bandwidth. Works at the data link layer and understands MAC addresses - not IP addresses.
Temporal Key Integrity Protocol (TKIP)
Circuit Level Proxy Firewall
Bridge
Classless inter-domain routing (CIDR)
8. Strengths of a type of Stateful Firewall: High security - better performance than an application firewall. Weaknesses include more complex - ___________ - if rebooted all information is lost.
DOS attacks from flooding
T1
Circuit Switching
ThinNet - aka 10base2
9. Protocol for allowing multi-cast (one to many) communication
Switch
Proxy Firewall Strengths
IGMP
802.16
10. Type of firewall that is also know as a screening router and is accomplished by ACL's (Lines of text called rules). Traffic can be filtered by address - ports - and protocol types. 1st generation firewall - runs at the network layer.
Loki Attack
Dual-Homed Firewall
OSI Data encapsulation
Packet Filtering Firewall
11. 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.
IPSec
ThinNet - aka 10base2
Wired Equivalent Privacy (WEP)
Layers in the TCP/IP Model
12. 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.
High Level Data Link Control (HLDC)
Screened Host Firewall
Ethernet (802.3)
Asynchronous Transfer Mode (ATM)
13. 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.
802.11
Wireless Application Protocol (WAP)
Synchronous Optical Networks (SONETS)
Bluejacking
14. OSI layer that provides end to end transmission between computer systems. Protocols that use this layer are TCP (Transmission Control Protocol) - UDP (User Datagram Protocol) - SPX (Sequenced Packet Exchange) - and SSL.
CBC-MAC Protocol (CCMP)
T3
OSI Layer 4: Transport Layer
Open Relay
15. Malware attack that sends commands inside of an ICMP packet.
Bus Topology
Loki Attack
CBC-MAC Protocol (CCMP)
Commonly used in logical bus - Ethernet - token ring.
16. 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.
Direct Sequence Spread Spectrum (DSSS)
Dedicated Links
Frame Relay
Screened Sub-Net
17. Type of network layout that separates and group computers logically.
FDDI-2
Synchronous Communication
VLAN
Synchronous Data Link Control (SDLC)
18. Protocol that transfers data in fixed cells (53 bytes) - is a WAN technology - and transmits data at very high rates. Supports voice - data - and video applications.
Full-Duplex
Crosstalk
Virtual Private Network (VPN)
Asynchronous Transfer Mode (ATM)
19. 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.
Synchronous Optical Networks (SONETS)
Asynchronous Communication
Classless inter-domain routing (CIDR)
IPSec
20. OSI layer that provides physical connections for transmission and performs the electrical encoding of data. This layer transforms bits to electrical signals. Protocols at this level HSSI (High Speed Serial Interface) - X.21 - EIA/TIA 232 and 449.
Coaxial Cables
Kernel Proxy Firewall
OSI Layer 1: Physical
Extensible Authentication Protocol (EAP)
21. More complexity and drastically increases the difficultly of access control. Many different devices - services - and users make it difficult to know which entities to trust and to what degree.
Distributed Environment Challenge
Bastion Host
Point-To-Point Tunneling Protocol (PPTP)
802.16
22. Protocol that resolves host names into IP addresses and has distributed databases all over the Internet to provide name resolution.
IPSec
Fiber Distributed Data Interface (FDDI)
Challenge Handshake Authentication Protocol (CHAP)
DNS (Domain Name System)
23. Type of cabling problem where data is corrupted going from end to end due to surrounding devices.
Noise
802.16
Bastion Host
802.11i
24. 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
Shared Key Authentication (SKA)
VLAN
Dynamic Packet Filtering
25. Type of wireless security standard that uses AES in CBC mode.
Frame Relay
CBC-MAC Protocol (CCMP)
Isochronous Communication Processes
Bus Topology
26. Used when a LAN device needs to communicate with WAN devices over telephone lines. Ensures the necessary electrical signaling and format are used. Interfaces with Data Terminal Equipment (DTE) and Data Circuit-Terminal Equipment (DCE).
Channel Service Unit/Data Service Unit (CSU/DSU)
Commonly used in logical bus - Ethernet - token ring.
Half-Duplex
DNS (Domain Name System)
27. A WAN protocol that works at the data link layer and performs packet switching. Economical choice because the fee is based on bandwidth usage rather than a dedicated pipeline.
Extensible Authentication Protocol (EAP)
X.25
Frame Relay
Synchronous Optical Networks (SONETS)
28. Application layer request/response protocol widely used for VoIP communication sessions. Transported by UDP - makes use of TCP - and is vulnerable to sniffing attacks.
Channel Service Unit/Data Service Unit (CSU/DSU)
Attenuation
Session Initiation Protocol (SIP)
Wide Area Network (WAN)
29. Type of backbone network that joins together LAN to other LANs and WANs to LANs - etc. Typically known as Synchronous Optical Networks (SONETS) or FDDI rings.
Multilevel Switching
VoIP
Metropolitan Area Network (MAN)
Commonly used in FDDI.
30. Dynamically builds ACL's to allow internal systems to communicate with external systems. Once the connection is finished - the ACL is removed from the list. 4th generation firewall.
Packet Filtering Firewall
Dynamic Packet Filtering
Dual-Homed Firewall
OSI Layer 4: Transport Layer
31. Both directions - both applications can send information at a time. Session Layer Communication Modes
802.11a
Full-Duplex
Proxy Firewall Strengths
Source Routing
32. 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
Proxy Firewall Strengths
Asynchronous Transfer Mode (ATM)
High Level Data Link Control (HLDC)
VoIP
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.
802.16
High Level Data Link Control (HLDC)
Service Set ID (SSID)
LLC (Logical Link Control - 802.2)
34. 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.
Committed Information Rate (CIR)
IPSec
Application Proxy Firewall
VLAN
35. Wireless LAN standard that operates in a 2.4Ghz range - 11Mbps - DSSS
802.11b
Distributed Environment Challenge
Port Numbers
Multistation Access Unit (MAU)
36. 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.
Direct Sequence Spread Spectrum (DSSS)
Ethernet (802.3)
ARP Poisoning
OSI Layer 6: Presentation
37. The original technique to digitized voice with 8 bits of sampling 8 -000 times per second - which yields 64 Kbps for one voice channel.
SOCKS Firewall
Direct Sequence Spread Spectrum (DSSS)
Blue Boxing
Pulse Code Modulation (PCM)
38. OSI layer that formats data into a standardized format and deals with the syntax of data - not the meaning. Example formats are ASCII - GIF - JPG - MPEG.
Asynchronous Transfer Mode (ATM)
Open System Authentication (OSA)
OSI Layer 6: Presentation
Source Routing
39. Protocol that works at the network layer and informs hosts - routers - and devices of network or computer problems. It is the major component of the ping utility.
Layers in the TCP/IP Model
Bastion Host
Bluejacking
ICMP (Internet Control Message Protocol)
40. Wireless communication that distributes individual signals across the allocated frequencies.
IPv6
Spread Spectrum
Bus Topology
VoIP
41. 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.
Multi-protocol Label Switching
Permanent Virtual Circuit (PVC)
Circuit Switching
Point-To-Point Tunneling Protocol (PPTP)
42. Older LAN implementation that uses a token-passing technology. Can send a beacon frame to indicate that a certain computer is failing and its neighbors should reconfigure and work around the detected fault.
Reverse Address Resolution Protocol (RARP )
X.25
Synchronous Communication
Token Ring (802.5)
43. Problems: Requires more expense in cabling and extra effort to track down cable faults.
Mesh Topology
Session Initiation Protocol (SIP)
Tree Topology
Source Routing
44. This dedicated connection provides up to 1.544 Mbps bandwidth over 1 T1 and 24 time divided channels.
Attenuation
T1
Reverse Address Resolution Protocol (RARP )
Repeaters
45. In a token ring network - each computer is connected to this - which acts as a central hub.
Fiber Distributed Data Interface (FDDI)
Multistation Access Unit (MAU)
Point-To-Point Tunneling Protocol (PPTP)
Dynamic Packet Filtering
46. OSI layer that has services and protocols required by the user's applications for network functionality. Example protocols include HTTP - SMTP - FTP - Telnet.
Synchronous Data Link Control (SDLC)
Application Proxy Firewall
Network Address Translator (NAT)
OSI Layer 7: Application
47. Security wireless standard that rotates encryption keys - stronger IV values - MAC codes for packet integrity. Works in combination with WEP.
Temporal Key Integrity Protocol (TKIP)
Channel Service Unit/Data Service Unit (CSU/DSU)
IGMP
High Level Data Link Control (HLDC)
48. Both directions - only one application can send information at a time
Distributed Environment Challenge
Tree Topology
Half-Duplex
ICMP (Internet Control Message Protocol)
49. 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
Ethernet (802.3)
Bastion Host
Circuit Level Proxy Firewall
50. Combines voice and data over the same IP network media and protocol. Reduces the cost of implementing and maintaining two different networks.
VoIP
T3
Plenum-rated Cables
Cable Modem