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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. 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.
Stateful Firewall
OSI Layer 1: Physical
Wide Area Network (WAN)
Circuit Switching
2. 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.
802.11
Classless inter-domain routing (CIDR)
Pulse Code Modulation (PCM)
Carrier sense multiple access with collision detection (CSMA/CD)
3. 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
Spam over Internet Telephony (SPIT)
Screened Host Firewall
Carrier sense multiple access with collision detection (CSMA/CD)
4. Blue tooth vulnerability where an attacker sends messages to a receiver that is in discovery mode.
Asynchronous Communication
Service Set ID (SSID)
Bluejacking
Frame Relay
5. Type of topology where all computers are connected by a unidirectional transmission link - and the cable is in a closed loop.
Subnetting
Commonly used in FDDI.
LLC (Logical Link Control - 802.2)
Integrated Services Digital Network (ISDN)
6. 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
Packet Switching
OSI Layer 2: Data Link Layer
Proxy Firewall Strengths
Cable Modem
7. Type of network layout that is a large geographical region connecting more that one LAN.
Kernel Proxy Firewall
Wide Area Network (WAN)
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Open System Authentication (OSA)
8. Wireless communication that distributes individual signals across the allocated frequencies.
OSI Layer 5: Session Layer
Spread Spectrum
Packet Filtering Firewall
Temporal Key Integrity Protocol (TKIP)
9. Protocol based on the first version - however this version allows for fixed bandwidth to be allocated for specific applications.
FDDI-2
Multilevel Switching
Screened Host Firewall
Wireless Application Protocol (WAP)
10. Type of ethernet implementation that uses a thicker coaxial cable - which allows a longer cable length to be used.
ThickNet - aka 10base5.
Trunk Lines
Integrated Services Digital Network (ISDN)
Pulse Code Modulation (PCM)
11. OSI layer that provides routing - addressing - and fragmentation of packets. This layer can determine alternative routes to avoid network congestion. Protocols that use this layer are IP - ICMP - RIP - OSPF (Open Shortest Path First) - BGP (Border Ga
OSI Layer 3: Network Layer
Frequency Hopping Spread Spectrum (FHSS)
Crosstalk
Star Topology
12. 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.
Synchronous Data Link Control (SDLC)
Noise
Circuit Level Proxy Firewall
Coaxial Cables
13. 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).
Twisted Pair Cables
Proxy Firewall
Token Ring (802.5)
ThickNet - aka 10base5.
14. 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.
OSI Layer 5: Session Layer
ICMP (Internet Control Message Protocol)
Asynchronous Communication
Twisted Pair Cables
15. 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.
VLAN
OSI Layer 4: Transport Layer
CBC-MAC Protocol (CCMP)
Kernel Proxy Firewall
16. A packet switching technology that is used by telecommunication services for data-only traffic. It is a subscriber based service that operates within the network and data link layers.
Wireless Application Protocol (WAP)
ThinNet - aka 10base2
Coaxial Cables
X.25
17. 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.
Session Initiation Protocol (SIP)
Digital Subscriber Line (DSL)
Shared Key Authentication (SKA)
Wireless Application Protocol (WAP)
18. Protocol for allowing multi-cast (one to many) communication
Kernel Proxy Firewall
IGMP
Simplex: One direction.
10baseT
19. Type of switch that uses tags that are assigned to each destination network. The network compares the tag with its tag information base - appends the appropriate tag - and forwards to the next switch. This increases the transmission speed - allows la
Isochronous Communication Processes
Multi-protocol Label Switching
Wireless Application Protocol (WAP)
ThinNet - aka 10base2
20. 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.
Ethernet (802.3)
Password Authentication Protocol (PAP)
Dynamic Packet Filtering
Trunk Lines
21. 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.
Attenuation
Application Proxy vs. Circuit Level
Bluejacking
CBC-MAC Protocol (CCMP)
22. SMTP server that is configured for sending email from any source to and destination.
Cable Modem
Frequency Hopping Spread Spectrum (FHSS)
Open Relay
Token Passing
23. If the packet header information is used to determine destinations rather than the routes configured into the router. Packets with this information should be dropped.
Source Routing
802.15
802.16
SPIM
24. Problems: If one station experiences a problem - it can negatively affect surrounding computers on the same cable.
Permanent Virtual Circuit (PVC)
Integrated Services Digital Network (ISDN)
Crosstalk
Bus Topology
25. Problems: Requires more expense in cabling and extra effort to track down cable faults.
Attenuation
802.11b
Noise
Mesh Topology
26. 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
Layers in the OSI Model
ThickNet - aka 10base5.
Commonly used in Ethernet.
Packet Switching
27. This dedicated connection provides up to 1.544 Mbps bandwidth over 1 T1 and 24 time divided channels.
ARP (Address Resolution Protocol)
Reverse Address Resolution Protocol (RARP )
T1
Subnetting
28. 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.
Dynamic Packet Filtering
Mesh Topology
Proxy Firewall
Circuit Switching
29. 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.
Layer 2 Tunneling Protocol (L2TP)
DOS attacks from flooding
ThickNet - aka 10base5.
Multi-protocol Label Switching
30. Type of firewall that can be compromised if the OS does not have packet forwarding or routing turned off.
OSI Layer 6: Presentation
X.25
Circuit Switching
Dual-Homed Firewall
31. Created because it was clear that available IP addresses were running out. Provides flexibility to increase or decrease the IP classes sizes as necessary.
Token Passing
Classless inter-domain routing (CIDR)
Mesh Topology
Crosstalk
32. Type of wireless authentication where a shared WEP key is used to encrypt a nonce for authentication.
Ethernet (802.3)
Shared Key Authentication (SKA)
Cable Modem
CBC-MAC Protocol (CCMP)
33. 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
SOCKS Firewall
Kernel Proxy Firewall
Noise
34. Spam over IM
Digital Subscriber Line (DSL)
SPIM
10baseT
LLC (Logical Link Control - 802.2)
35. 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.
Dedicated Links
ThinNet - aka 10base2
Application Proxy Firewall
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
36. Application layer request/response protocol widely used for VoIP communication sessions. Transported by UDP - makes use of TCP - and is vulnerable to sniffing attacks.
Crosstalk
Session Initiation Protocol (SIP)
Permanent Virtual Circuit (PVC)
CBC-MAC Protocol (CCMP)
37. 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.
Synchronous Communication
10baseT
802.16
Frame Relay
38. This dedicated connection provides 45Mbps of bandwidth over 28 T1 lines and 672 time divided channels.
Synchronous Communication
Ring Topology
OSI Layer 7: Application
T3
39. Encapsulation protocol for telecommunication connections. Replaced SLIP and is ideal for connection different types of devices over serial lines.
Bridge
Point-To-Point (PPP)
Application Proxy vs. Circuit Level
Token Ring (802.5)
40. 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.
Iterated Association
Plenum-rated Cables
High Level Data Link Control (HLDC)
Spam over Internet Telephony (SPIT)
41. Type of cabling problem signals from one wire crossing over to another wire.
Open System Authentication (OSA)
Integrated Services Digital Network (ISDN)
Source Routing
Crosstalk
42. 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.
Token Ring (802.5)
Wired Equivalent Privacy (WEP)
Proxy Firewall
LLC (Logical Link Control - 802.2)
43. 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.
Dual-Homed Firewall
Token Ring (802.5)
Cable Modem
Coaxial Cables
44. Type of cabling problem where loss of signal strength occurs as it travels due to cable exceeding its recommended length.
Attenuation
Commonly used in Ethernet.
Coaxial Cables
Proxy Firewall
45. 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.
Frame Relay
802.11i
Wireless Application Protocol (WAP)
Cable Modem
46. New variant to traditional email spam on VoIP networks.
Kernel Proxy Firewall
Dynamic Packet Filtering
OSI Layer 1: Physical
Spam over Internet Telephony (SPIT)
47. 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.
SPIM
Private Branch Exchange (PBX)
TCP
Stateful Firewall
48. Type of network layout that separates and group computers logically.
Metropolitan Area Network (MAN)
Coaxial Cables
Wired Equivalent Privacy (WEP)
VLAN
49. Type of ethernet implementation that uses twisted-pair copper wiring and transmits at 100Mbps.
10baseT
Private Branch Exchange (PBX)
ICMP (Internet Control Message Protocol)
Asynchronous Communication
50. 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.
Token Passing
Asynchronous Transfer Mode (ATM)
OSI Layer 4: Transport Layer
Repeaters