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Test your basic knowledge |
CISSP Telecom And Network Security
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Study First
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. 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.
Subnetting
Application Proxy Firewall
OSI Layer 1: Physical
Iterated Association
2. 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
Kernel Proxy Firewall
Open Relay
Serial Line Internet Protocol (SLIP)
3. Protocol that translates a MAC address into an IP address.
Source Routing
Loki Attack
Extensible Authentication Protocol (EAP)
Reverse Address Resolution Protocol (RARP )
4. The original technique to digitized voice with 8 bits of sampling 8 -000 times per second - which yields 64 Kbps for one voice channel.
Trunk Lines
Port Numbers
Pulse Code Modulation (PCM)
Dedicated Links
5. 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.
Carrier sense multiple access with collision detection (CSMA/CD)
Coaxial Cables
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Stateful Firewall
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.
Fiber Distributed Data Interface (FDDI)
Point-To-Point Tunneling Protocol (PPTP)
OSI Layer 3: Network Layer
ThickNet - aka 10base5.
7. Type of topology where computers all are connected to each other - which provides redundancy.
Ring Topology
Commonly used in Internet.
Multilevel Switching
Application Proxy vs. Circuit Level
8. Type of authentication protocol that provides a framework to enable may types of authentication techniques to be used during PPP connections. It extends the possibilities to one-time passwords - token cards - biometrics - Kerberos - and digital certi
Extensible Authentication Protocol (EAP)
Bus Topology
Switch
SPIM
9. Set of rules that dictates how computer communicate over networks.
Trunk Lines
Asynchronous Transfer Mode (ATM)
Definition of Protocol
Shared Key Authentication (SKA)
10. Problems: If one station experiences a problem - it can negatively affect surrounding computers on the same cable.
Point-To-Point (PPP)
Bus Topology
OSI Layer 3: Network Layer
Remote Access Servers
11. 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.
Switch
Full-Duplex
Twisted Pair Cables
Dynamic Packet Filtering
12. Type of topology where all computers are connected by a unidirectional transmission link - and the cable is in a closed loop.
OSI Layer 1: Physical
802.11
Commonly used in FDDI.
Password Authentication Protocol (PAP)
13. The well known values range from 0-1023. FTP runs on 20 and 21 - SMTP runs on 25 - TFTP runs on 69 - DNS runs on 53 - HTTP runs on 80 - HTTPS runs on 443 - SNMP runs on 161.
IGMP
Spread Spectrum
Port Numbers
Simplex: One direction.
14. 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.
Frame Relay
Digital Subscriber Line (DSL)
Circuit Level Proxy Firewall
Serial Line Internet Protocol (SLIP)
15. Protocol that increases address size from 32 bits to 128 bits
IPv6
Commonly used in Internet.
Private Branch Exchange (PBX)
Half-Duplex
16. Wireless standard that will improve security of wireless communication
802.11i
Full-Duplex
LLC (Logical Link Control - 802.2)
Screened Sub-Net
17. 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.
Subnetting
802.11i
ICMP (Internet Control Message Protocol)
Reverse Address Resolution Protocol (RARP )
18. Communication devices that determine synchronization scheme before data transmission.
Circuit Switching
Synchronous Communication
802.11i
SPIM
19. 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).
Asynchronous Transfer Mode (ATM)
802.11i
IPSec
X.25
20. Combines voice and data over the same IP network media and protocol. Reduces the cost of implementing and maintaining two different networks.
VoIP
Wired Equivalent Privacy (WEP)
Wireless Application Protocol (WAP)
UDP
21. 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.
Asynchronous Communication
Temporal Key Integrity Protocol (TKIP)
High Level Data Link Control (HLDC)
OSI Layer 6: Presentation
22. 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)
802.11i
VLAN
DOS attacks from flooding
23. Type of cabling problem where data is corrupted going from end to end due to surrounding devices.
Noise
Twisted Pair Cables
Star Topology
Dedicated Links
24. Protocol that resolves host names into IP addresses and has distributed databases all over the Internet to provide name resolution.
802.11i
DNS (Domain Name System)
Simplex: One direction.
Wired Equivalent Privacy (WEP)
25. 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.
Packet Filtering Firewall
DOS attacks from flooding
Network Address Translator (NAT)
Fiber-optic Cables
26. Protocol that is best-effort - connectionless - and does not sent acknowledgements.
Twisted Pair Cables
UDP
Carrier sense multiple access with collision detection (CSMA/CD)
Switched Virtual Circuit (SVC)
27. Problems: Central device is a single point of failure.
Commonly used in Internet.
Channel Service Unit/Data Service Unit (CSU/DSU)
Dynamic Packet Filtering
Star Topology
28. 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.
DNS (Domain Name System)
Loki Attack
SPIM
Asynchronous Communication
29. This network technology determines which system will send data based on which one has the token.
Token Passing
OSI Layer 1: Physical
802.11i
Wired Equivalent Privacy (WEP)
30. An older protocol that was used by ISP's to encapsulate data to be sent over dial up connections
Serial Line Internet Protocol (SLIP)
Full-Duplex
Private Branch Exchange (PBX)
Iterated Association
31. Network segment name for a DMZ created by two physical firewalls.
Plenum-rated Cables
Pulse Code Modulation (PCM)
High Level Data Link Control (HLDC)
Screened Sub-Net
32. Wireless LAN standard that operates in a 2.4Ghz range - 11Mbps - DSSS
Integrated Services Digital Network (ISDN)
802.11b
10baseT
Spread Spectrum
33. 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.
Circuit Level Proxy Firewall
Integrated Services Digital Network (ISDN)
Frequency Hopping Spread Spectrum (FHSS)
Repeaters
34. 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.
T3
TCP
Distributed Environment Challenge
Frame Relay
35. 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.
VoIP
Circuit Level Proxy Firewall
LLC (Logical Link Control - 802.2)
Circuit Switching
36. 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
UDP
Application Proxy vs. Circuit Level
Packet Switching
Trunk Lines
37. The process of simulating a 2600Hz frequency tone - which allowed attackers to gain free long distance phone service.
Fiber Distributed Data Interface (FDDI)
T1
Blue Boxing
802.15
38. A technique that allows multiple layers of nesting. Example - IPSec tunnel can originate or terminate at a different IPSec site along the way.
Commonly used in FDDI.
SPIM
Iterated Association
Point-To-Point (PPP)
39. Problems: If one station experiences a problem - it can negatively affect surrounding computers on the same ring.
Shared Key Authentication (SKA)
Distributed Environment Challenge
Application Proxy Firewall
Ring Topology
40. 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.
Multi-protocol Label Switching
Virtual Private Network (VPN)
Router
Pulse Code Modulation (PCM)
41. 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
Frequency Hopping Spread Spectrum (FHSS)
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Proxy Firewall Strengths
OSI Layer 4: Transport Layer
42. Application layer request/response protocol widely used for VoIP communication sessions. Transported by UDP - makes use of TCP - and is vulnerable to sniffing attacks.
Session Initiation Protocol (SIP)
Commonly used in Ethernet.
Trunk Lines
Network Address Translator (NAT)
43. Protocol that is reliable and connection-oriented - which means it ensures delivery through acknowledgements - sequencing - detection and correction.
Commonly used in logical bus - Ethernet - token ring.
Simplex: One direction.
TCP
Packet Switching
44. Type of ethernet implementation that uses a thicker coaxial cable - which allows a longer cable length to be used.
ThickNet - aka 10base5.
Dual-Homed Firewall
Application Proxy vs. Circuit Level
Reverse Address Resolution Protocol (RARP )
45. In the OSI layer 5 - these are the types of what?
Token Passing
Simplex: One direction.
Direct Sequence Spread Spectrum (DSSS)
Dynamic Packet Filtering
46. 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.
Commonly used in Ethernet.
Session Initiation Protocol (SIP)
Circuit Level Proxy Firewall
Pulse Code Modulation (PCM)
47. OSI layer that has services and protocols required by the user's applications for network functionality. Example protocols include HTTP - SMTP - FTP - Telnet.
Password Authentication Protocol (PAP)
Commonly used in logical bus - Ethernet - token ring.
OSI Layer 6: Presentation
OSI Layer 7: Application
48. In a token ring network - each computer is connected to this - which acts as a central hub.
Temporal Key Integrity Protocol (TKIP)
Metropolitan Area Network (MAN)
Trunk Lines
Multistation Access Unit (MAU)
49. Server that can be configured to hang up and call back remote users - but this can be compromise by enabling call forwarding.
Wireless Application Protocol (WAP)
Circuit Level Proxy Firewall
Remote Access Servers
Packet Switching
50. 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
Dual-Homed Firewall
Mesh Topology
Token Ring (802.5)