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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. Type of cabling problem where data is corrupted going from end to end due to surrounding devices.
VLAN
Noise
Commonly used in Ethernet.
CBC-MAC Protocol (CCMP)
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.
X.25
Carrier sense multiple access with collision detection (CSMA/CD)
Channel Service Unit/Data Service Unit (CSU/DSU)
SPIM
3. 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.
Private Branch Exchange (PBX)
Synchronous Optical Networks (SONETS)
ARP Poisoning
Distributed Environment Challenge
4. Type of host that is locked down - hardened - system. Systems installed in the DMZ (firewalls - servers) should be installed on this type of host.
Open System Authentication (OSA)
Bastion Host
Remote Access Servers
Bridge
5. Set of rules that dictates how computer communicate over networks.
Dynamic Packet Filtering
Fiber-optic Cables
Layer 2 Tunneling Protocol (L2TP)
Definition of Protocol
6. 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).
Iterated Association
Multilevel Switching
10baseT
ARP (Address Resolution Protocol)
7. Blue tooth vulnerability where an attacker sends messages to a receiver that is in discovery mode.
Bluejacking
ThinNet - aka 10base2
Point-To-Point (PPP)
ICMP (Internet Control Message Protocol)
8. Problems: If one station experiences a problem - it can negatively affect surrounding computers on the same cable.
DNS (Domain Name System)
Bus Topology
802.11a
Session Initiation Protocol (SIP)
9. 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.
Commonly used in Ethernet.
Noise
Screened Host Firewall
Application Proxy vs. Circuit Level
10. Device used within companies to provide multiple services to users throughout a building or facility. Example - dialing 9 to place outbound phone calls. Security concerns: default configurations and passwords - maintenance modems disabled - unused co
Bus Topology
Private Branch Exchange (PBX)
Screened Sub-Net
Screened Host Firewall
11. 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.
Wireless Application Protocol (WAP)
Frame Relay
ARP Poisoning
Definition of Protocol
12. 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.
Router
Synchronous Communication
Application Proxy Firewall
OSI Layer 5: Session Layer
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.
Challenge Handshake Authentication Protocol (CHAP)
Port Numbers
Fiber Distributed Data Interface (FDDI)
Commonly used in Ethernet.
14. 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.
Temporal Key Integrity Protocol (TKIP)
OSI Layer 1: Physical
UDP
802.16
15. 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.
ThickNet - aka 10base5.
Loki Attack
DOS attacks from flooding
Open System Authentication (OSA)
16. 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 7: Application
Wired Equivalent Privacy (WEP)
Simplex: One direction.
Layer 2 Tunneling Protocol (L2TP)
17. Standard that addresses wireless MAN technologies.
802.16
Fiber-optic Cables
ARP (Address Resolution Protocol)
Token Passing
18. Protocol that resolves host names into IP addresses and has distributed databases all over the Internet to provide name resolution.
DNS (Domain Name System)
Carrier sense multiple access with collision detection (CSMA/CD)
Iterated Association
Point-To-Point (PPP)
19. Type of topology where all computers are connected by a unidirectional transmission link - and the cable is in a closed loop.
Virtual Private Network (VPN)
802.11a
Commonly used in FDDI.
Layers in the OSI Model
20. Communication devices that determine synchronization scheme before data transmission.
X.25
Carrier sense multiple access with collision detection (CSMA/CD)
Synchronous Communication
Plenum-rated Cables
21. Identifys a WLAN. Can be used to segment environments into different WLANS.
Twisted Pair Cables
Service Set ID (SSID)
ICMP (Internet Control Message Protocol)
802.11b
22. 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.
Password Authentication Protocol (PAP)
High Level Data Link Control (HLDC)
Shared Key Authentication (SKA)
Loki Attack
23. 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.
Token Ring (802.5)
Packet Filtering Firewall
Subnetting
24. Protocol that increases address size from 32 bits to 128 bits
802.16
Loki Attack
IPv6
Dedicated Links
25. Type of ethernet implementation that uses twisted-pair copper wiring and transmits at 100Mbps.
Pulse Code Modulation (PCM)
Synchronous Data Link Control (SDLC)
10baseT
Application Proxy Firewall
26. Type of firewall that can be compromised if the OS does not have packet forwarding or routing turned off.
Dual-Homed Firewall
Loki Attack
Multilevel Switching
Frame Relay
27. 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
Session Initiation Protocol (SIP)
Classless inter-domain routing (CIDR)
SOCKS Firewall
Packet Switching
28. 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.
ARP (Address Resolution Protocol)
Stateful Firewall
Loki Attack
802.16
29. 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).
Simplex: One direction.
UDP
Dedicated Links
IPSec
30. VPN protocol that works at the data link layer - can only run in IP networks - and provides encryption and encapsulation. This is Microsoft's VPN solution.
Frame Relay
Classless inter-domain routing (CIDR)
Point-To-Point Tunneling Protocol (PPTP)
10baseT
31. 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.
Wired Equivalent Privacy (WEP)
Bastion Host
UDP
Frame Relay
32. Encapsulation protocol for telecommunication connections. Replaced SLIP and is ideal for connection different types of devices over serial lines.
Ring Topology
T1
OSI Layer 3: Network Layer
Point-To-Point (PPP)
33. Type of network layout that is a large geographical region connecting more that one LAN.
Direct Sequence Spread Spectrum (DSSS)
Bluejacking
Wide Area Network (WAN)
UDP
34. 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.
Router
Point-To-Point Tunneling Protocol (PPTP)
802.11
OSI Layer 5: Session Layer
35. 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)
T1
Tree Topology
Twisted Pair Cables
36. 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.
Channel Service Unit/Data Service Unit (CSU/DSU)
Virtual Private Network (VPN)
Fiber-optic Cables
Network Address Translator (NAT)
37. 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
Dual-Homed Firewall
High Level Data Link Control (HLDC)
Crosstalk
Synchronous Data Link Control (SDLC)
38. 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.
Permanent Virtual Circuit (PVC)
DOS attacks from flooding
Open System Authentication (OSA)
ICMP (Internet Control Message Protocol)
39. 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.
Proxy Firewall
Synchronous Optical Networks (SONETS)
Commonly used in Ethernet.
OSI Data encapsulation
40. 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.
802.16
Circuit Level Proxy Firewall
OSI Layer 4: Transport Layer
Dynamic Packet Filtering
41. 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.
Application Proxy Firewall
Source Routing
Star Topology
Cable Modem
42. 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.
LLC (Logical Link Control - 802.2)
Plenum-rated Cables
Dynamic Packet Filtering
Switch
43. 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.
802.11i
Router
Synchronous Communication
Bridge
44. 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)
Trunk Lines
OSI Layer 3: Network Layer
Synchronous Communication
45. 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.
OSI Layer 4: Transport Layer
Remote Access Servers
Layer 2 Tunneling Protocol (L2TP)
LLC (Logical Link Control - 802.2)
46. 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.
802.11i
Source Routing
Twisted Pair Cables
Wired Equivalent Privacy (WEP)
47. 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.
Network Address Translator (NAT)
T3
High Level Data Link Control (HLDC)
Dynamic Packet Filtering
48. Protocol for allowing multi-cast (one to many) communication
802.11
VLAN
Cable Modem
IGMP
49. Wireless LAN standard that operates in a 5Ghz range - 54Mpbs - and uses OFDM spread spectrum.
802.11a
Cable Modem
Committed Information Rate (CIR)
Proxy Firewall
50. 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
802.11a
Bastion Host
OSI Layer 2: Data Link Layer
Packet Switching