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CISSP Telecom And Network Security
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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. Protocol that is reliable and connection-oriented - which means it ensures delivery through acknowledgements - sequencing - detection and correction.
Star Topology
Half-Duplex
TCP
Synchronous Optical Networks (SONETS)
2. 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.
Asynchronous Transfer Mode (ATM)
OSI Layer 4: Transport Layer
Frame Relay
Layers in the OSI Model
3. Wireless communication that splits total amount of bandwidth into smaller sub-channels. Send and receiver work in one of the channels for a period of time - and then move into a different channel. It uses a portion of the bandwidth - throughput of 1-
ThickNet - aka 10base5.
Packet Filtering Firewall
Frequency Hopping Spread Spectrum (FHSS)
Frame Relay
4. 7: Application - 6: Presentation - 5: Session - 4: Transport - 3: Network - 2: Data Link - 1: Physical - Remember 'All People Seem To Need Data Processing'
OSI Layer 4: Transport Layer
Router
Layers in the OSI Model
Switch
5. Type of topology where all computers are connected by a unidirectional transmission link - and the cable is in a closed loop.
Tree Topology
Kernel Proxy Firewall
Commonly used in FDDI.
Network Address Translator (NAT)
6. Type of host that is locked down - hardened - system. Systems installed in the DMZ (firewalls - servers) should be installed on this type of host.
Bastion Host
ThickNet - aka 10base5.
Digital Subscriber Line (DSL)
Integrated Services Digital Network (ISDN)
7. 4: Application - 3: Host-to-Host - 2: Internet - 1: Network Access - 3 -1 -1 -2 will map to the OSI model.
Layers in the TCP/IP Model
DNS (Domain Name System)
Dual-Homed Firewall
Star Topology
8. 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
Dual-Homed Firewall
Layers in the TCP/IP Model
Commonly used in logical bus - Ethernet - token ring.
Multi-protocol Label Switching
9. Protocol for allowing multi-cast (one to many) communication
Fiber Distributed Data Interface (FDDI)
IGMP
Definition of Protocol
Carrier sense multiple access with collision detection (CSMA/CD)
10. Security wireless standard that rotates encryption keys - stronger IV values - MAC codes for packet integrity. Works in combination with WEP.
Iterated Association
Ethernet (802.3)
Packet Filtering Firewall
Temporal Key Integrity Protocol (TKIP)
11. A Temporary circuit set up for a single connection. Set up and torn down as they are needed.
Challenge Handshake Authentication Protocol (CHAP)
Mesh Topology
Switched Virtual Circuit (SVC)
VoIP
12. Protocol that is used by remote users to authenticate over PPP lines. Sends passwords over clear text. Vulnerable to MITM attacks.
Password Authentication Protocol (PAP)
Open System Authentication (OSA)
Permanent Virtual Circuit (PVC)
Ethernet (802.3)
13. 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).
Multilevel Switching
OSI Data encapsulation
Spread Spectrum
Network Address Translator (NAT)
14. 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.
Pulse Code Modulation (PCM)
Point-To-Point (PPP)
Repeaters
Commonly used in Ethernet.
15. Type of network device that links 2 or more network segments - where each segment can function as an independent network. Works at the network layer - works with IP addresses - and has more network knowledge than the other hardware.
Frame Relay
IPSec
Commonly used in FDDI.
Router
16. Wireless standard that will improve security of wireless communication
Synchronous Optical Networks (SONETS)
Commonly used in Internet.
Commonly used in Ethernet.
802.11i
17. 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
Token Passing
ICMP (Internet Control Message Protocol)
Coaxial Cables
18. Type of firewall that lies between the perimeter router and and LAN.
Full-Duplex
Attenuation
Extensible Authentication Protocol (EAP)
Screened Host Firewall
19. Type of ethernet implementation that uses a standard coaxial cable with a maximum cable length of 185 meters. 10Mbps.
802.11b
Switched Virtual Circuit (SVC)
Ring Topology
ThinNet - aka 10base2
20. 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.
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Network Address Translator (NAT)
Channel Service Unit/Data Service Unit (CSU/DSU)
ARP Poisoning
21. An older protocol that was used by ISP's to encapsulate data to be sent over dial up connections
Commonly used in Internet.
Serial Line Internet Protocol (SLIP)
X.25
SPIM
22. Protocol that increases address size from 32 bits to 128 bits
ARP Poisoning
Open Relay
Ethernet (802.3)
IPv6
23. OSI layer that has services and protocols required by the user's applications for network functionality. Example protocols include HTTP - SMTP - FTP - Telnet.
Switched Virtual Circuit (SVC)
Multistation Access Unit (MAU)
High Level Data Link Control (HLDC)
OSI Layer 7: Application
24. 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.
ARP (Address Resolution Protocol)
Token Passing
Token Ring (802.5)
Mesh Topology
25. Protocol that translates IP address into a MAC address (physical Ethernet address)
Dynamic Packet Filtering
T1
ARP (Address Resolution Protocol)
VoIP
26. Standard that outlines wireless personal area network (WPAN) technologies.
802.15
Kernel Proxy Firewall
Iterated Association
Token Passing
27. Type of ethernet implementation that uses twisted-pair copper wiring and transmits at 100Mbps.
10baseT
Bluejacking
OSI Layer 5: Session Layer
802.11i
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.
Tree Topology
Full-Duplex
Circuit Switching
Packet Switching
29. Type of cabling problem where loss of signal strength occurs as it travels due to cable exceeding its recommended length.
Attenuation
Plenum-rated Cables
OSI Layer 1: Physical
Router
30. Problems: Requires more expense in cabling and extra effort to track down cable faults.
Mesh Topology
Application Proxy Firewall
Multilevel Switching
Private Branch Exchange (PBX)
31. This dedicated connection provides up to 1.544 Mbps bandwidth over 1 T1 and 24 time divided channels.
OSI Layer 6: Presentation
T1
Circuit Level Proxy Firewall
Channel Service Unit/Data Service Unit (CSU/DSU)
32. Wireless communication that distributes individual signals across the allocated frequencies.
Loki Attack
Coaxial Cables
Spread Spectrum
Frequency Hopping Spread Spectrum (FHSS)
33. Identifys a WLAN. Can be used to segment environments into different WLANS.
Circuit Switching
Multi-protocol Label Switching
Service Set ID (SSID)
DOS attacks from flooding
34. Combines voice and data over the same IP network media and protocol. Reduces the cost of implementing and maintaining two different networks.
VoIP
802.11
Frame Relay
Extensible Authentication Protocol (EAP)
35. Strengths of a type of firewall: application independence - high performance - and scalability. Weaknesses include low security - no protection above the network layer.
Temporal Key Integrity Protocol (TKIP)
Packet Filtering Firewall
DOS attacks from flooding
Spread Spectrum
36. 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.
IPv6
Wired Equivalent Privacy (WEP)
Synchronous Optical Networks (SONETS)
Twisted Pair Cables
37. 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.
Permanent Virtual Circuit (PVC)
Application Proxy vs. Circuit Level
Iterated Association
802.11b
38. Type of cabling problem signals from one wire crossing over to another wire.
Crosstalk
Iterated Association
SOCKS Firewall
Frame Relay
39. Both directions - both applications can send information at a time. Session Layer Communication Modes
OSI Layer 6: Presentation
Full-Duplex
Packet Filtering Firewall
Permanent Virtual Circuit (PVC)
40. 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.
Bluejacking
Stateful Firewall
Half-Duplex
Circuit Switching
41. Both directions - only one application can send information at a time
Half-Duplex
Proxy Firewall Strengths
Asynchronous Communication
Asynchronous Transfer Mode (ATM)
42. Type of firewall that is a proxy-based firewall solution. It is circuit-based and does not provide any application-based proxies.
Router
ThickNet - aka 10base5.
SOCKS Firewall
Packet Filtering Firewall
43. 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.
Packet Filtering Firewall
ICMP (Internet Control Message Protocol)
Application Proxy vs. Circuit Level
Screened Host Firewall
44. Type of topology where computers all are connected to each other - which provides redundancy.
802.16
OSI Layer 3: Network Layer
Asynchronous Transfer Mode (ATM)
Commonly used in Internet.
45. 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.
Switched Virtual Circuit (SVC)
Proxy Firewall
OSI Layer 4: Transport Layer
VoIP
46. Problems: Central device is a single point of failure.
Star Topology
Fiber-optic Cables
Port Numbers
OSI Layer 4: Transport Layer
47. 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.
802.11b
Blue Boxing
Circuit Switching
Packet Filtering Firewall
48. Type of ethernet implementation that uses a thicker coaxial cable - which allows a longer cable length to be used.
ThickNet - aka 10base5.
Metropolitan Area Network (MAN)
OSI Layer 6: Presentation
Switch
49. Premium service offered by service providers in frame relay networks that guarantees a company a specified amount of bandwidth.
Dynamic Packet Filtering
Committed Information Rate (CIR)
802.15
ThickNet - aka 10base5.
50. 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.
Wired Equivalent Privacy (WEP)
Circuit Level Proxy Firewall
Proxy Firewall Strengths
Loki Attack
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