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Test your basic knowledge |
CISSP Telecom And Network Security
Start Test
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. Both directions - both applications can send information at a time. Session Layer Communication Modes
Integrated Services Digital Network (ISDN)
Commonly used in Ethernet.
Extensible Authentication Protocol (EAP)
Full-Duplex
2. 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
Channel Service Unit/Data Service Unit (CSU/DSU)
802.11b
Packet Switching
Isochronous Communication Processes
3. This dedicated connection provides 45Mbps of bandwidth over 28 T1 lines and 672 time divided channels.
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
T3
OSI Layer 6: Presentation
OSI Layer 5: Session Layer
4. Problems: Requires more expense in cabling and extra effort to track down cable faults.
Source Routing
Mesh Topology
Frame Relay
Metropolitan Area Network (MAN)
5. Protocol that is reliable and connection-oriented - which means it ensures delivery through acknowledgements - sequencing - detection and correction.
TCP
802.11
Shared Key Authentication (SKA)
Crosstalk
6. 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.
High Level Data Link Control (HLDC)
Asynchronous Transfer Mode (ATM)
Crosstalk
VLAN
7. 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.
Noise
Integrated Services Digital Network (ISDN)
Simplex: One direction.
Repeaters
8. Type of ethernet implementation that uses a thicker coaxial cable - which allows a longer cable length to be used.
Dedicated Links
ThickNet - aka 10base5.
Plenum-rated Cables
Point-To-Point (PPP)
9. 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.
Multistation Access Unit (MAU)
OSI Layer 6: Presentation
Shared Key Authentication (SKA)
Source Routing
10. Works like a private line for a customer with an agreed upon bandwidth. Path is programmed into the WAN devices.
ICMP (Internet Control Message Protocol)
Bastion Host
Permanent Virtual Circuit (PVC)
Mesh Topology
11. 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
OSI Layer 2: Data Link Layer
IPv6
Distributed Environment Challenge
OSI Data encapsulation
12. Standard for transmitting data across the Internet. One is reliable and connection oriented. The other is unreliable and connectionless.
OSI Layer 6: Presentation
Port Numbers
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Spread Spectrum
13. Standard that addresses wireless MAN technologies.
Screened Host Firewall
802.16
Virtual Private Network (VPN)
Token Ring (802.5)
14. Wireless LAN standard that operates in a 5Ghz range - 54Mpbs - and uses OFDM spread spectrum.
802.11a
Digital Subscriber Line (DSL)
Layers in the OSI Model
Committed Information Rate (CIR)
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.
Trunk Lines
Switched Virtual Circuit (SVC)
OSI Layer 4: Transport Layer
ThickNet - aka 10base5.
16. OSI layer that formats data into a standardized format and deals with the syntax of data - not the meaning. Example formats are ASCII - GIF - JPG - MPEG.
Simplex: One direction.
Open Relay
OSI Layer 6: Presentation
Cable Modem
17. OSI layer that has services and protocols required by the user's applications for network functionality. Example protocols include HTTP - SMTP - FTP - Telnet.
802.16
OSI Layer 7: Application
Bastion Host
Blue Boxing
18. Type of ethernet implementation that uses a standard coaxial cable with a maximum cable length of 185 meters. 10Mbps.
Circuit Level Proxy Firewall
ThinNet - aka 10base2
Repeaters
Dynamic Packet Filtering
19. SMTP server that is configured for sending email from any source to and destination.
IPv6
SPIM
OSI Layer 3: Network Layer
Open Relay
20. 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.
Bluejacking
Repeaters
Virtual Private Network (VPN)
Circuit Level Proxy Firewall
21. 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.
Point-To-Point Tunneling Protocol (PPTP)
Dynamic Packet Filtering
Pulse Code Modulation (PCM)
Bus Topology
22. Used when companies do not want systems to know internal hosts IP addresses. Enables companies to use private - nonroutable IP addresses.
LLC (Logical Link Control - 802.2)
Switch
Committed Information Rate (CIR)
Network Address Translator (NAT)
23. This dedicated connection provides up to 1.544 Mbps bandwidth over 1 T1 and 24 time divided channels.
OSI Data encapsulation
Port Numbers
Virtual Private Network (VPN)
T1
24. 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.
Noise
LLC (Logical Link Control - 802.2)
Challenge Handshake Authentication Protocol (CHAP)
Frame Relay
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.
Frame Relay
Session Initiation Protocol (SIP)
Isochronous Communication Processes
DOS attacks from flooding
26. 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.
Metropolitan Area Network (MAN)
Bus Topology
Loki Attack
Circuit Level Proxy Firewall
27. 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.
Wired Equivalent Privacy (WEP)
High Level Data Link Control (HLDC)
Remote Access Servers
802.11b
28. Type of cable that carries data as light waves - expensive - can transmit data at high speeds - difficult to tap into - and is resistant to EMI. Most secure cabling option - but vulnerable to dispersion.
Fiber-optic Cables
Point-To-Point (PPP)
TCP
Permanent Virtual Circuit (PVC)
29. Type of network layout that is a large geographical region connecting more that one LAN.
Wide Area Network (WAN)
OSI Layer 4: Transport Layer
Asynchronous Transfer Mode (ATM)
OSI Layer 7: Application
30. This network technology determines which system will send data based on which one has the token.
Token Passing
802.11b
Kernel Proxy Firewall
Reverse Address Resolution Protocol (RARP )
31. Type of wireless authentication where a shared WEP key is used to encrypt a nonce for authentication.
Loki Attack
Shared Key Authentication (SKA)
OSI Layer 1: Physical
High Level Data Link Control (HLDC)
32. 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.
10baseT
Proxy Firewall
SOCKS Firewall
Source Routing
33. Type of topology where all computers are connected by a unidirectional transmission link - and the cable is in a closed loop.
Trunk Lines
Commonly used in FDDI.
Router
Proxy Firewall Strengths
34. 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.
ICMP (Internet Control Message Protocol)
Distributed Environment Challenge
Classless inter-domain routing (CIDR)
Private Branch Exchange (PBX)
35. Protocol that translates a MAC address into an IP address.
Reverse Address Resolution Protocol (RARP )
Extensible Authentication Protocol (EAP)
Crosstalk
Spread Spectrum
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.
Session Initiation Protocol (SIP)
Metropolitan Area Network (MAN)
OSI Layer 6: Presentation
Frequency Hopping Spread Spectrum (FHSS)
37. The process of simulating a 2600Hz frequency tone - which allowed attackers to gain free long distance phone service.
Channel Service Unit/Data Service Unit (CSU/DSU)
Blue Boxing
High Level Data Link Control (HLDC)
Temporal Key Integrity Protocol (TKIP)
38. 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.
Bastion Host
Layers in the TCP/IP Model
Digital Subscriber Line (DSL)
802.11a
39. 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.
Packet Filtering Firewall
Metropolitan Area Network (MAN)
Wireless Application Protocol (WAP)
Integrated Services Digital Network (ISDN)
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.
Full-Duplex
Reverse Address Resolution Protocol (RARP )
High Level Data Link Control (HLDC)
Multilevel Switching
41. 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.
Remote Access Servers
ARP Poisoning
ThinNet - aka 10base2
Screened Host Firewall
42. OSI layer that sets up - maintains - and breaks down the dialog (session) between two applications. Controls dialog organization and synchronization. Protocols that work at this layer are NFS (Network File System) - SQL - NetBIOS - RPC.
Circuit Switching
Service Set ID (SSID)
OSI Layer 5: Session Layer
Permanent Virtual Circuit (PVC)
43. Wireless LAN standard. Variations include 802.11a - b - f - g - and i. Commonly accepts are 802.11b and g.
802.11
IPv6
Frame Relay
ARP Poisoning
44. Type of wireless security standard that uses AES in CBC mode.
CBC-MAC Protocol (CCMP)
IGMP
Permanent Virtual Circuit (PVC)
UDP
45. 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.
ARP Poisoning
802.16
Commonly used in logical bus - Ethernet - token ring.
Trunk Lines
46. 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.
VoIP
Dedicated Links
Ethernet (802.3)
Circuit Level Proxy Firewall
47. Blue tooth vulnerability where an attacker sends messages to a receiver that is in discovery mode.
Bluejacking
Attenuation
Remote Access Servers
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
48. 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.
Wide Area Network (WAN)
OSI Layer 1: Physical
Digital Subscriber Line (DSL)
Layers in the TCP/IP Model
49. 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.
10baseT
Bus Topology
OSI Layer 1: Physical
Cable Modem
50. Type of host that is locked down - hardened - system. Systems installed in the DMZ (firewalls - servers) should be installed on this type of host.
Point-To-Point (PPP)
Open System Authentication (OSA)
Bastion Host
Simplex: One direction.