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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. 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
Proxy Firewall Strengths
ARP Poisoning
OSI Layer 3: Network Layer
Twisted Pair Cables
2. 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)
Port Numbers
Application Proxy vs. Circuit Level
Dual-Homed Firewall
3. Problems: If one station experiences a problem - it can negatively affect surrounding computers on the same cable.
Tree Topology
Simplex: One direction.
Token Ring (802.5)
Bus Topology
4. 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
High Level Data Link Control (HLDC)
Twisted Pair Cables
Multi-protocol Label Switching
Wireless Application Protocol (WAP)
5. 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.
Proxy Firewall
Wide Area Network (WAN)
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Digital Subscriber Line (DSL)
6. Network segment name for a DMZ created by two physical firewalls.
Bastion Host
Blue Boxing
Screened Sub-Net
DNS (Domain Name System)
7. 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.
Port Numbers
Commonly used in logical bus - Ethernet - token ring.
ARP Poisoning
Commonly used in Internet.
8. Protocol that addresses vulnerabilities found in PAP. Uses challenge/response mechanism to authenticate the user instead of sending password.
Application Proxy vs. Circuit Level
X.25
Open Relay
Challenge Handshake Authentication Protocol (CHAP)
9. This dedicated connection provides 45Mbps of bandwidth over 28 T1 lines and 672 time divided channels.
Service Set ID (SSID)
Point-To-Point Tunneling Protocol (PPTP)
T3
Private Branch Exchange (PBX)
10. 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.
802.11a
Spread Spectrum
OSI Layer 6: Presentation
Blue Boxing
11. 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.
Shared Key Authentication (SKA)
Direct Sequence Spread Spectrum (DSSS)
Dedicated Links
OSI Layer 1: Physical
12. 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.
Dedicated Links
Virtual Private Network (VPN)
Synchronous Data Link Control (SDLC)
OSI Layer 4: Transport Layer
13. Network cabling that is placed in these types of areas must meet a specific fire rating. These cables typically have a jacked cover made of fluoropolymers.
Multilevel Switching
Plenum-rated Cables
Synchronous Optical Networks (SONETS)
Stateful Firewall
14. New variant to traditional email spam on VoIP networks.
Spam over Internet Telephony (SPIT)
Bus Topology
Ethernet (802.3)
OSI Layer 2: Data Link Layer
15. 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.
Circuit Level Proxy Firewall
T3
ICMP (Internet Control Message Protocol)
Mesh Topology
16. Faster because processing is done in the kernel. One network stack is created for each packet. 5th generation firewall - runs at the application layer.
Kernel Proxy Firewall
Ethernet (802.3)
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
ThickNet - aka 10base5.
17. Problems: Central device is a single point of failure.
Star Topology
OSI Layer 6: Presentation
802.11a
Frame Relay
18. 4: Application - 3: Host-to-Host - 2: Internet - 1: Network Access - 3 -1 -1 -2 will map to the OSI model.
Bus Topology
Permanent Virtual Circuit (PVC)
Layers in the TCP/IP Model
T1
19. Premium service offered by service providers in frame relay networks that guarantees a company a specified amount of bandwidth.
Permanent Virtual Circuit (PVC)
Asynchronous Transfer Mode (ATM)
Open Relay
Committed Information Rate (CIR)
20. SMTP server that is configured for sending email from any source to and destination.
IPSec
FDDI-2
Open Relay
802.16
21. A Temporary circuit set up for a single connection. Set up and torn down as they are needed.
T1
SOCKS Firewall
Switched Virtual Circuit (SVC)
Ring Topology
22. Type of cable where STP and UTP (shielded and unshielded) cables are the most popular - cheapest - and easiest to work with. However - easiest to tap into - have cross talk issues - and are vulnerable to electromagnetic interference (EMI).
Ring Topology
Twisted Pair Cables
Bluejacking
Switch
23. A technique that allows multiple layers of nesting. Example - IPSec tunnel can originate or terminate at a different IPSec site along the way.
VoIP
Iterated Association
Stateful Firewall
Multilevel Switching
24. Standard that addresses wireless MAN technologies.
Isochronous Communication Processes
Metropolitan Area Network (MAN)
802.16
Wired Equivalent Privacy (WEP)
25. Set of rules that dictates how computer communicate over networks.
Mesh Topology
Definition of Protocol
Iterated Association
Switch
26. Protocol that translates IP address into a MAC address (physical Ethernet address)
High Level Data Link Control (HLDC)
ARP (Address Resolution Protocol)
Tree Topology
Bastion Host
27. Protocol that translates a MAC address into an IP address.
Reverse Address Resolution Protocol (RARP )
Pulse Code Modulation (PCM)
Synchronous Communication
VLAN
28. Wireless LAN standard. Variations include 802.11a - b - f - g - and i. Commonly accepts are 802.11b and g.
Digital Subscriber Line (DSL)
Session Initiation Protocol (SIP)
802.11
Commonly used in logical bus - Ethernet - token ring.
29. Proprietary protocol that enables secondary devices to communicate with primary stations or mainframes in an IBM architecture. Developed in the mid-70's for use in a systems network architecture (SNA) environment. First synchronous - link layer - bit
Token Ring (802.5)
LLC (Logical Link Control - 802.2)
Trunk Lines
Synchronous Data Link Control (SDLC)
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)
DNS (Domain Name System)
Network Address Translator (NAT)
X.25
31. 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-
Frequency Hopping Spread Spectrum (FHSS)
Circuit Switching
Application Proxy vs. Circuit Level
Synchronous Data Link Control (SDLC)
32. Wireless standard that will improve security of wireless communication
Repeaters
802.11b
802.11i
OSI Layer 7: Application
33. Used when companies do not want systems to know internal hosts IP addresses. Enables companies to use private - nonroutable IP addresses.
VoIP
Network Address Translator (NAT)
Asynchronous Communication
Commonly used in logical bus - Ethernet - token ring.
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.
TCP
Screened Host Firewall
Commonly used in Ethernet.
Twisted Pair Cables
35. Application layer request/response protocol widely used for VoIP communication sessions. Transported by UDP - makes use of TCP - and is vulnerable to sniffing attacks.
Serial Line Internet Protocol (SLIP)
Open Relay
Stateful Firewall
Session Initiation Protocol (SIP)
36. Type of wireless security standard that uses AES in CBC mode.
VoIP
Dedicated Links
Blue Boxing
CBC-MAC Protocol (CCMP)
37. 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.
Direct Sequence Spread Spectrum (DSSS)
Committed Information Rate (CIR)
Trunk Lines
Multistation Access Unit (MAU)
38. Type of ethernet implementation that uses twisted-pair copper wiring and transmits at 100Mbps.
Committed Information Rate (CIR)
Service Set ID (SSID)
10baseT
Layers in the TCP/IP Model
39. Both directions - only one application can send information at a time
Half-Duplex
Wired Equivalent Privacy (WEP)
Permanent Virtual Circuit (PVC)
Layers in the OSI Model
40. Type of cable that is more expensive than UTP and STP - more resistant to EMI - can carry baseband and board band technologies.
Coaxial Cables
Layers in the OSI Model
Digital Subscriber Line (DSL)
Twisted Pair Cables
41. 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.
Integrated Services Digital Network (ISDN)
Screened Host Firewall
802.11a
Bastion Host
42. 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.
Packet Switching
Application Proxy Firewall
OSI Layer 3: Network Layer
Distributed Environment Challenge
43. Problems: Requires more expense in cabling and extra effort to track down cable faults.
Simplex: One direction.
Mesh Topology
Proxy Firewall
Frame Relay
44. Spam over IM
TCP
Switch
SPIM
DOS attacks from flooding
45. OSI layer that has services and protocols required by the user's applications for network functionality. Example protocols include HTTP - SMTP - FTP - Telnet.
OSI Layer 3: Network Layer
OSI Layer 7: Application
802.11
DOS attacks from flooding
46. Type of cabling problem signals from one wire crossing over to another wire.
Crosstalk
Mesh Topology
OSI Layer 4: Transport Layer
Multilevel Switching
47. 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.
ARP Poisoning
SOCKS Firewall
Crosstalk
Extensible Authentication Protocol (EAP)
48. Type of wireless authentication where a shared WEP key is used to encrypt a nonce for authentication.
802.11i
Shared Key Authentication (SKA)
Fiber-optic Cables
DNS (Domain Name System)
49. Type of ethernet implementation that uses a standard coaxial cable with a maximum cable length of 185 meters. 10Mbps.
Tree Topology
Ethernet (802.3)
Bridge
ThinNet - aka 10base2
50. 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.
CBC-MAC Protocol (CCMP)
IGMP
Bridge
Digital Subscriber Line (DSL)