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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. The original technique to digitized voice with 8 bits of sampling 8 -000 times per second - which yields 64 Kbps for one voice channel.
Pulse Code Modulation (PCM)
Point-To-Point (PPP)
Synchronous Communication
OSI Layer 4: Transport Layer
2. 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.
Packet Filtering Firewall
Repeaters
Remote Access Servers
Frequency Hopping Spread Spectrum (FHSS)
3. 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.
FDDI-2
Circuit Switching
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Asynchronous Communication
4. 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
Shared Key Authentication (SKA)
OSI Layer 3: Network Layer
Iterated Association
Commonly used in Ethernet.
5. 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
IPv6
Spam over Internet Telephony (SPIT)
Pulse Code Modulation (PCM)
6. 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.
Packet Filtering Firewall
Plenum-rated Cables
IPv6
OSI Data encapsulation
7. Uses tunneling protocols and encryption to provide a secure network connection between two network hosts. Private and secure connections can be made across an unsecured network. Example protocols are PPTP - L2TP - and IPSec.
VoIP
Virtual Private Network (VPN)
Point-To-Point (PPP)
Dedicated Links
8. Problems: Central device is a single point of failure.
VLAN
Dual-Homed Firewall
Point-To-Point Tunneling Protocol (PPTP)
Star Topology
9. Server that can be configured to hang up and call back remote users - but this can be compromise by enabling call forwarding.
Fiber Distributed Data Interface (FDDI)
DNS (Domain Name System)
OSI Layer 1: Physical
Remote Access Servers
10. 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
T3
Proxy Firewall Strengths
Iterated Association
Bridge
11. In the OSI layer 5 - these are the types of what?
Challenge Handshake Authentication Protocol (CHAP)
Switched Virtual Circuit (SVC)
Blue Boxing
Simplex: One direction.
12. Standard for transmitting data across the Internet. One is reliable and connection oriented. The other is unreliable and connectionless.
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Kernel Proxy Firewall
Wireless Application Protocol (WAP)
Mesh Topology
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.
Packet Filtering Firewall
Commonly used in Ethernet.
Permanent Virtual Circuit (PVC)
Synchronous Optical Networks (SONETS)
14. Protocol that is best-effort - connectionless - and does not sent acknowledgements.
UDP
Coaxial Cables
Subnetting
Serial Line Internet Protocol (SLIP)
15. 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)
OSI Layer 3: Network Layer
Tree Topology
Password Authentication Protocol (PAP)
16. Protocol that translates IP address into a MAC address (physical Ethernet address)
Commonly used in logical bus - Ethernet - token ring.
Commonly used in FDDI.
SOCKS Firewall
ARP (Address Resolution Protocol)
17. Type of ethernet implementation that uses a standard coaxial cable with a maximum cable length of 185 meters. 10Mbps.
ARP Poisoning
ThinNet - aka 10base2
Permanent Virtual Circuit (PVC)
Tree Topology
18. This dedicated connection provides 45Mbps of bandwidth over 28 T1 lines and 672 time divided channels.
ICMP (Internet Control Message Protocol)
Bastion Host
Layer 2 Tunneling Protocol (L2TP)
T3
19. Developed to replace the aging telephone and analog systems. BRI rate that uses two B channels (send/receive) - and one D channel (control information) - and PRI rate that uses up to 23 B channels. Supports voice - data - and video. Provides up to 1.
Wide Area Network (WAN)
VoIP
Integrated Services Digital Network (ISDN)
Switched Virtual Circuit (SVC)
20. 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.
Application Proxy Firewall
Bus Topology
Repeaters
Stateful Firewall
21. Standard that addresses wireless MAN technologies.
Multilevel Switching
802.16
802.11
802.11b
22. 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).
10baseT
Classless inter-domain routing (CIDR)
IPSec
Pulse Code Modulation (PCM)
23. Protocol that resolves host names into IP addresses and has distributed databases all over the Internet to provide name resolution.
Permanent Virtual Circuit (PVC)
Pulse Code Modulation (PCM)
Router
DNS (Domain Name System)
24. Type of topology where all computers are connected by a unidirectional transmission link - and the cable is in a closed loop.
FDDI-2
Commonly used in FDDI.
Dynamic Packet Filtering
SOCKS Firewall
25. 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.
Application Proxy Firewall
CBC-MAC Protocol (CCMP)
Open System Authentication (OSA)
Bridge
26. Protocol that addresses vulnerabilities found in PAP. Uses challenge/response mechanism to authenticate the user instead of sending password.
SOCKS Firewall
Challenge Handshake Authentication Protocol (CHAP)
Asynchronous Transfer Mode (ATM)
Iterated Association
27. SMTP server that is configured for sending email from any source to and destination.
High Level Data Link Control (HLDC)
OSI Layer 6: Presentation
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Open Relay
28. 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.
High Level Data Link Control (HLDC)
Network Address Translator (NAT)
Router
ARP Poisoning
29. Wireless LAN standard that operates in a 5Ghz range - 54Mpbs - and uses OFDM spread spectrum.
Reverse Address Resolution Protocol (RARP )
Bastion Host
802.11a
Attenuation
30. 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.
OSI Layer 2: Data Link Layer
X.25
Commonly used in FDDI.
Frame Relay
31. 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.
Metropolitan Area Network (MAN)
Fiber-optic Cables
Screened Host Firewall
Shared Key Authentication (SKA)
32. Protocol that is reliable and connection-oriented - which means it ensures delivery through acknowledgements - sequencing - detection and correction.
TCP
ThinNet - aka 10base2
Coaxial Cables
ThickNet - aka 10base5.
33. Type of firewall that is a proxy-based firewall solution. It is circuit-based and does not provide any application-based proxies.
Star Topology
Spam over Internet Telephony (SPIT)
SOCKS Firewall
Multistation Access Unit (MAU)
34. 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.
DNS (Domain Name System)
Commonly used in Ethernet.
Bluejacking
Reverse Address Resolution Protocol (RARP )
35. 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.
Token Passing
Digital Subscriber Line (DSL)
Carrier sense multiple access with collision detection (CSMA/CD)
Point-To-Point (PPP)
36. Problems: If one station experiences a problem - it can negatively affect surrounding computers on the same ring.
Ring Topology
Mesh Topology
802.15
Iterated Association
37. This network technology determines which system will send data based on which one has the token.
Token Passing
Stateful Firewall
Pulse Code Modulation (PCM)
Private Branch Exchange (PBX)
38. 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.
Mesh Topology
Noise
Circuit Level Proxy Firewall
Router
39. Encapsulation protocol for telecommunication connections. Replaced SLIP and is ideal for connection different types of devices over serial lines.
Port Numbers
Point-To-Point (PPP)
10baseT
Circuit Switching
40. Communication devices that determine synchronization scheme before data transmission.
Token Ring (802.5)
Dedicated Links
Packet Filtering Firewall
Synchronous Communication
41. 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.
Temporal Key Integrity Protocol (TKIP)
Permanent Virtual Circuit (PVC)
Asynchronous Transfer Mode (ATM)
LLC (Logical Link Control - 802.2)
42. 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)
Synchronous Data Link Control (SDLC)
Circuit Switching
Screened Host Firewall
43. Network segment name for a DMZ created by two physical firewalls.
Screened Sub-Net
Reverse Address Resolution Protocol (RARP )
Permanent Virtual Circuit (PVC)
Packet Filtering Firewall
44. A technique that allows multiple layers of nesting. Example - IPSec tunnel can originate or terminate at a different IPSec site along the way.
Pulse Code Modulation (PCM)
Trunk Lines
Iterated Association
T1
45. Problems: Requires more expense in cabling and extra effort to track down cable faults.
Circuit Switching
Metropolitan Area Network (MAN)
ThinNet - aka 10base2
Mesh Topology
46. 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.
Proxy Firewall
LLC (Logical Link Control - 802.2)
802.11a
TCP
47. 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.
FDDI-2
DOS attacks from flooding
Circuit Switching
Proxy Firewall
48. 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
Metropolitan Area Network (MAN)
Multi-protocol Label Switching
Frame Relay
Full-Duplex
49. Type of network that allows large IP ranges to be divided into smaller - logical - and easier to maintain network segments.
Subnetting
Spread Spectrum
Synchronous Data Link Control (SDLC)
IGMP
50. 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.
ThinNet - aka 10base2
Virtual Private Network (VPN)
Multistation Access Unit (MAU)
Dedicated Links