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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
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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. Security wireless standard that rotates encryption keys - stronger IV values - MAC codes for packet integrity. Works in combination with WEP.
SPIM
OSI Layer 4: Transport Layer
Temporal Key Integrity Protocol (TKIP)
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
2. Protocol where all computers compete for the shard network cable - listen to learn when they can transmit data - susceptible to data collisions. Used by Ethernet.
Carrier sense multiple access with collision detection (CSMA/CD)
Switched Virtual Circuit (SVC)
OSI Layer 4: Transport Layer
Noise
3. 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).
Simplex: One direction.
Twisted Pair Cables
Committed Information Rate (CIR)
Multilevel Switching
4. 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.
OSI Layer 1: Physical
Stateful Firewall
Coaxial Cables
Challenge Handshake Authentication Protocol (CHAP)
5. 7: Application - 6: Presentation - 5: Session - 4: Transport - 3: Network - 2: Data Link - 1: Physical - Remember 'All People Seem To Need Data Processing'
ThinNet - aka 10base2
VoIP
Layers in the OSI Model
Full-Duplex
6. Blue tooth vulnerability where an attacker sends messages to a receiver that is in discovery mode.
Bluejacking
802.11i
Distributed Environment Challenge
Private Branch Exchange (PBX)
7. Both directions - only one application can send information at a time
Half-Duplex
Commonly used in Internet.
Reverse Address Resolution Protocol (RARP )
Screened Sub-Net
8. Problems: Central device is a single point of failure.
Switched Virtual Circuit (SVC)
Commonly used in logical bus - Ethernet - token ring.
Packet Filtering Firewall
Star Topology
9. 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.
Ring Topology
Token Ring (802.5)
LLC (Logical Link Control - 802.2)
TCP
10. Type of ethernet implementation that uses a standard coaxial cable with a maximum cable length of 185 meters. 10Mbps.
Synchronous Optical Networks (SONETS)
Source Routing
802.11i
ThinNet - aka 10base2
11. Type of cable that is more expensive than UTP and STP - more resistant to EMI - can carry baseband and board band technologies.
Coaxial Cables
OSI Layer 4: Transport Layer
Synchronous Data Link Control (SDLC)
IPv6
12. Older LAN implementation that uses a token-passing technology. Can send a beacon frame to indicate that a certain computer is failing and its neighbors should reconfigure and work around the detected fault.
Token Ring (802.5)
10baseT
IPSec
OSI Layer 6: Presentation
13. 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.
X.25
Permanent Virtual Circuit (PVC)
Asynchronous Transfer Mode (ATM)
LLC (Logical Link Control - 802.2)
14. Type of network that allows large IP ranges to be divided into smaller - logical - and easier to maintain network segments.
Challenge Handshake Authentication Protocol (CHAP)
Bluejacking
Bridge
Subnetting
15. The original technique to digitized voice with 8 bits of sampling 8 -000 times per second - which yields 64 Kbps for one voice channel.
VoIP
Pulse Code Modulation (PCM)
Private Branch Exchange (PBX)
Open System Authentication (OSA)
16. Works like a private line for a customer with an agreed upon bandwidth. Path is programmed into the WAN devices.
Direct Sequence Spread Spectrum (DSSS)
802.11a
Distributed Environment Challenge
Permanent Virtual Circuit (PVC)
17. 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)
High Level Data Link Control (HLDC)
Multilevel Switching
Point-To-Point (PPP)
18. Network segment name for a DMZ created by two physical firewalls.
Simplex: One direction.
Metropolitan Area Network (MAN)
Synchronous Data Link Control (SDLC)
Screened Sub-Net
19. Type of wireless authentication where a shared WEP key is used to encrypt a nonce for authentication.
Router
Shared Key Authentication (SKA)
Simplex: One direction.
T3
20. Faster because processing is done in the kernel. One network stack is created for each packet. 5th generation firewall - runs at the application layer.
Bridge
802.11b
Application Proxy Firewall
Kernel Proxy Firewall
21. Type of firewall that lies between the perimeter router and and LAN.
Challenge Handshake Authentication Protocol (CHAP)
ICMP (Internet Control Message Protocol)
Screened Host Firewall
Reverse Address Resolution Protocol (RARP )
22. 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.
Service Set ID (SSID)
OSI Layer 4: Transport Layer
Commonly used in Ethernet.
Session Initiation Protocol (SIP)
23. 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.
Crosstalk
Wired Equivalent Privacy (WEP)
Distributed Environment Challenge
Token Ring (802.5)
24. This dedicated connection provides 45Mbps of bandwidth over 28 T1 lines and 672 time divided channels.
DNS (Domain Name System)
802.11b
T3
OSI Layer 6: Presentation
25. 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.
Layers in the TCP/IP Model
Crosstalk
Frame Relay
Router
26. 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.
Application Proxy vs. Circuit Level
Service Set ID (SSID)
Point-To-Point Tunneling Protocol (PPTP)
802.11i
27. 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.
ThickNet - aka 10base5.
ThinNet - aka 10base2
OSI Layer 5: Session Layer
FDDI-2
28. 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.
Token Passing
Screened Sub-Net
Application Proxy Firewall
Synchronous Optical Networks (SONETS)
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.
DOS attacks from flooding
Switch
Private Branch Exchange (PBX)
Password Authentication Protocol (PAP)
30. 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.
802.11b
Stateful Firewall
Open System Authentication (OSA)
Port Numbers
31. Used when companies do not want systems to know internal hosts IP addresses. Enables companies to use private - nonroutable IP addresses.
Switched Virtual Circuit (SVC)
ARP Poisoning
Network Address Translator (NAT)
Shared Key Authentication (SKA)
32. 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
SOCKS Firewall
Proxy Firewall Strengths
Challenge Handshake Authentication Protocol (CHAP)
Circuit Switching
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.
Star Topology
Extensible Authentication Protocol (EAP)
Repeaters
Challenge Handshake Authentication Protocol (CHAP)
34. 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.
Frame Relay
Synchronous Optical Networks (SONETS)
Point-To-Point (PPP)
Bridge
35. Created because it was clear that available IP addresses were running out. Provides flexibility to increase or decrease the IP classes sizes as necessary.
Plenum-rated Cables
Classless inter-domain routing (CIDR)
Remote Access Servers
IGMP
36. 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
Temporal Key Integrity Protocol (TKIP)
DOS attacks from flooding
ARP Poisoning
OSI Layer 3: Network Layer
37. 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.
Packet Filtering Firewall
SOCKS Firewall
Screened Sub-Net
Fiber-optic Cables
38. Type of firewall that can be compromised if the OS does not have packet forwarding or routing turned off.
Dual-Homed Firewall
Proxy Firewall Strengths
Cable Modem
Wide Area Network (WAN)
39. Type of firewall that is also know as a screening router and is accomplished by ACL's (Lines of text called rules). Traffic can be filtered by address - ports - and protocol types. 1st generation firewall - runs at the network layer.
Repeaters
802.16
Packet Filtering Firewall
Proxy Firewall
40. Type of wireless security standard that uses AES in CBC mode.
Spread Spectrum
OSI Layer 2: Data Link Layer
VLAN
CBC-MAC Protocol (CCMP)
41. 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.
Session Initiation Protocol (SIP)
Metropolitan Area Network (MAN)
Token Ring (802.5)
Frame Relay
42. Wireless LAN standard that operates in a 5Ghz range - 54Mpbs - and uses OFDM spread spectrum.
Virtual Private Network (VPN)
Asynchronous Transfer Mode (ATM)
802.11a
T1
43. Protocol that increases address size from 32 bits to 128 bits
ARP Poisoning
Synchronous Communication
IPv6
Switched Virtual Circuit (SVC)
44. The process of simulating a 2600Hz frequency tone - which allowed attackers to gain free long distance phone service.
Switched Virtual Circuit (SVC)
Blue Boxing
Point-To-Point (PPP)
Extensible Authentication Protocol (EAP)
45. Encapsulation protocol for telecommunication connections. Replaced SLIP and is ideal for connection different types of devices over serial lines.
OSI Layer 4: Transport Layer
Carrier sense multiple access with collision detection (CSMA/CD)
Point-To-Point (PPP)
Asynchronous Communication
46. This network technology determines which system will send data based on which one has the token.
OSI Layer 1: Physical
Synchronous Communication
Attenuation
Token Passing
47. 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.
VoIP
Metropolitan Area Network (MAN)
Point-To-Point Tunneling Protocol (PPTP)
Packet Filtering Firewall
48. Type of cabling problem where data is corrupted going from end to end due to surrounding devices.
Synchronous Communication
Noise
Bluejacking
802.15
49. 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
Synchronous Optical Networks (SONETS)
802.11a
Bastion Host
50. 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.
Star Topology
Spread Spectrum
Metropolitan Area Network (MAN)
Cable Modem