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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. Protocol that is used by remote users to authenticate over PPP lines. Sends passwords over clear text. Vulnerable to MITM attacks.
Serial Line Internet Protocol (SLIP)
Bus Topology
Digital Subscriber Line (DSL)
Password Authentication Protocol (PAP)
2. Blue tooth vulnerability where an attacker sends messages to a receiver that is in discovery mode.
Carrier sense multiple access with collision detection (CSMA/CD)
Bluejacking
OSI Layer 5: Session Layer
Proxy Firewall Strengths
3. Type of network that allows large IP ranges to be divided into smaller - logical - and easier to maintain network segments.
OSI Layer 7: Application
Subnetting
SOCKS Firewall
Wireless Application Protocol (WAP)
4. 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.
Tree Topology
Coaxial Cables
Fiber-optic Cables
Wireless Application Protocol (WAP)
5. 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.
Ethernet (802.3)
OSI Layer 6: Presentation
Source Routing
802.11i
6. Wireless communication that distributes individual signals across the allocated frequencies.
Spread Spectrum
High Level Data Link Control (HLDC)
OSI Layer 4: Transport Layer
Integrated Services Digital Network (ISDN)
7. 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
Trunk Lines
Application Proxy vs. Circuit Level
DOS attacks from flooding
8. 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.
Password Authentication Protocol (PAP)
Point-To-Point Tunneling Protocol (PPTP)
Layer 2 Tunneling Protocol (L2TP)
Subnetting
9. A Temporary circuit set up for a single connection. Set up and torn down as they are needed.
Switched Virtual Circuit (SVC)
Classless inter-domain routing (CIDR)
Spread Spectrum
Mesh Topology
10. New variant to traditional email spam on VoIP networks.
Permanent Virtual Circuit (PVC)
VLAN
Trunk Lines
Spam over Internet Telephony (SPIT)
11. Communication process that must deliver data with set time constraints. Applications are typically video related where audio and must match perfectly. VoIP is another example.
Direct Sequence Spread Spectrum (DSSS)
Isochronous Communication Processes
Dynamic Packet Filtering
Point-To-Point Tunneling Protocol (PPTP)
12. Type of ethernet implementation that uses a standard coaxial cable with a maximum cable length of 185 meters. 10Mbps.
Network Address Translator (NAT)
VoIP
Bus Topology
ThinNet - aka 10base2
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.
Port Numbers
Synchronous Data Link Control (SDLC)
Synchronous Optical Networks (SONETS)
OSI Layer 7: Application
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.
802.11i
VLAN
Distributed Environment Challenge
OSI Layer 4: Transport Layer
15. Both directions - both applications can send information at a time. Session Layer Communication Modes
Full-Duplex
Packet Filtering Firewall
Application Proxy Firewall
OSI Layer 3: Network Layer
16. Standard for transmitting data across the Internet. One is reliable and connection oriented. The other is unreliable and connectionless.
Screened Host Firewall
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Pulse Code Modulation (PCM)
Synchronous Communication
17. Wireless LAN standard that operates in a 2.4Ghz range - 11Mbps - DSSS
Dynamic Packet Filtering
CBC-MAC Protocol (CCMP)
802.11b
Mesh Topology
18. Faster because processing is done in the kernel. One network stack is created for each packet. 5th generation firewall - runs at the application layer.
OSI Layer 3: Network Layer
Kernel Proxy Firewall
Password Authentication Protocol (PAP)
T3
19. 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).
Multilevel Switching
Commonly used in Ethernet.
802.15
Channel Service Unit/Data Service Unit (CSU/DSU)
20. 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.
Crosstalk
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Remote Access Servers
ICMP (Internet Control Message Protocol)
21. 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).
Router
Dual-Homed Firewall
LLC (Logical Link Control - 802.2)
IPSec
22. Provides high-speed access - up to 50 Mbps - to the Internet through existing cable coaxial and fiber lines. Major security concern is the fact that neighbors use the same coaxial network and can monitor each others traffic.
Layers in the OSI Model
Cable Modem
LLC (Logical Link Control - 802.2)
IPSec
23. Type of topology that where all computers are connected to a central device (AKA hub) - which provides more resilience for the network.
Source Routing
Commonly used in logical bus - Ethernet - token ring.
Trunk Lines
Proxy Firewall Strengths
24. Device used within companies to provide multiple services to users throughout a building or facility. Example - dialing 9 to place outbound phone calls. Security concerns: default configurations and passwords - maintenance modems disabled - unused co
Switch
Proxy Firewall
Private Branch Exchange (PBX)
Service Set ID (SSID)
25. SMTP server that is configured for sending email from any source to and destination.
VLAN
Packet Switching
Asynchronous Transfer Mode (ATM)
Open Relay
26. Set of rules that dictates how computer communicate over networks.
OSI Layer 6: Presentation
ARP Poisoning
Definition of Protocol
T1
27. 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.
Integrated Services Digital Network (ISDN)
Ethernet (802.3)
Repeaters
Multilevel Switching
28. Protocol that is reliable and connection-oriented - which means it ensures delivery through acknowledgements - sequencing - detection and correction.
VoIP
Frequency Hopping Spread Spectrum (FHSS)
TCP
Open System Authentication (OSA)
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.
Frame Relay
DOS attacks from flooding
Layers in the OSI Model
Commonly used in logical bus - Ethernet - token ring.
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.
Full-Duplex
Pulse Code Modulation (PCM)
Direct Sequence Spread Spectrum (DSSS)
CBC-MAC Protocol (CCMP)
31. 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.
Bridge
Switched Virtual Circuit (SVC)
Integrated Services Digital Network (ISDN)
OSI Layer 7: Application
32. Protocol that translates IP address into a MAC address (physical Ethernet address)
Switched Virtual Circuit (SVC)
802.16
Channel Service Unit/Data Service Unit (CSU/DSU)
ARP (Address Resolution Protocol)
33. In a token ring network - each computer is connected to this - which acts as a central hub.
VoIP
Multistation Access Unit (MAU)
Asynchronous Transfer Mode (ATM)
Layers in the OSI Model
34. 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)
Packet Filtering Firewall
Commonly used in Ethernet.
Mesh Topology
35. This dedicated connection provides 45Mbps of bandwidth over 28 T1 lines and 672 time divided channels.
Tree Topology
T3
Wireless Application Protocol (WAP)
ICMP (Internet Control Message Protocol)
36. Standard that addresses wireless MAN technologies.
Tree Topology
802.16
CBC-MAC Protocol (CCMP)
Circuit Level Proxy Firewall
37. 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.
Proxy Firewall Strengths
ThinNet - aka 10base2
Layer 2 Tunneling Protocol (L2TP)
Packet Filtering Firewall
38. In the OSI layer 5 - these are the types of what?
Simplex: One direction.
T1
Blue Boxing
Attenuation
39. Spam over IM
Twisted Pair Cables
SPIM
Private Branch Exchange (PBX)
Layers in the OSI Model
40. 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.
Layers in the TCP/IP Model
Application Proxy vs. Circuit Level
Commonly used in FDDI.
VLAN
41. 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.
Digital Subscriber Line (DSL)
Wired Equivalent Privacy (WEP)
Token Ring (802.5)
VLAN
42. 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.
ARP Poisoning
OSI Layer 7: Application
Frame Relay
Virtual Private Network (VPN)
43. Type of wireless authentication where a shared WEP key is used to encrypt a nonce for authentication.
Frequency Hopping Spread Spectrum (FHSS)
Private Branch Exchange (PBX)
X.25
Shared Key Authentication (SKA)
44. Protocol that translates a MAC address into an IP address.
OSI Layer 6: Presentation
SPIM
Multistation Access Unit (MAU)
Reverse Address Resolution Protocol (RARP )
45. 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.
Stateful Firewall
Metropolitan Area Network (MAN)
Bastion Host
ARP (Address Resolution Protocol)
46. 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.
Plenum-rated Cables
Multilevel Switching
High Level Data Link Control (HLDC)
Frame Relay
47. 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.
T1
Asynchronous Communication
Integrated Services Digital Network (ISDN)
Dynamic Packet Filtering
48. Encapsulation protocol for telecommunication connections. Replaced SLIP and is ideal for connection different types of devices over serial lines.
Circuit Switching
Point-To-Point (PPP)
OSI Layer 7: Application
Committed Information Rate (CIR)
49. 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.
Private Branch Exchange (PBX)
Application Proxy Firewall
Isochronous Communication Processes
Open Relay
50. Wireless standard that will improve security of wireless communication
802.11i
802.16
Shared Key Authentication (SKA)
OSI Layer 2: Data Link Layer