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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. Protocol that is used by remote users to authenticate over PPP lines. Sends passwords over clear text. Vulnerable to MITM attacks.
Dynamic Packet Filtering
Password Authentication Protocol (PAP)
Star Topology
Private Branch Exchange (PBX)
2. 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.
Layers in the OSI Model
Bus Topology
Application Proxy vs. Circuit Level
Reverse Address Resolution Protocol (RARP )
3. 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.
Noise
Commonly used in Internet.
Frame Relay
OSI Layer 5: Session Layer
4. Type of cabling problem signals from one wire crossing over to another wire.
Crosstalk
Proxy Firewall Strengths
Subnetting
Challenge Handshake Authentication Protocol (CHAP)
5. VPN protocol that can run in other networks (frame relay - X.25 - ATM). Does not provide encryption - lacks the security to be called a true "VPN" solution.
Challenge Handshake Authentication Protocol (CHAP)
Layer 2 Tunneling Protocol (L2TP)
Pulse Code Modulation (PCM)
Session Initiation Protocol (SIP)
6. 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.
Proxy Firewall Strengths
Session Initiation Protocol (SIP)
DOS attacks from flooding
Stateful Firewall
7. Protocol that is reliable and connection-oriented - which means it ensures delivery through acknowledgements - sequencing - detection and correction.
Coaxial Cables
Twisted Pair Cables
TCP
Crosstalk
8. 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.
Dual-Homed Firewall
Serial Line Internet Protocol (SLIP)
OSI Layer 6: Presentation
ThickNet - aka 10base5.
9. 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.
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Classless inter-domain routing (CIDR)
Asynchronous Communication
Challenge Handshake Authentication Protocol (CHAP)
10. New variant to traditional email spam on VoIP networks.
Crosstalk
IPv6
Spam over Internet Telephony (SPIT)
Definition of Protocol
11. A packet switching technology that is used by telecommunication services for data-only traffic. It is a subscriber based service that operates within the network and data link layers.
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
Cable Modem
Crosstalk
X.25
12. Protocol that increases address size from 32 bits to 128 bits
Commonly used in Internet.
Spread Spectrum
IPv6
Multistation Access Unit (MAU)
13. OSI layer that has services and protocols required by the user's applications for network functionality. Example protocols include HTTP - SMTP - FTP - Telnet.
Service Set ID (SSID)
OSI Layer 7: Application
Integrated Services Digital Network (ISDN)
ThickNet - aka 10base5.
14. Type of cabling problem where loss of signal strength occurs as it travels due to cable exceeding its recommended length.
X.25
Dynamic Packet Filtering
Crosstalk
Attenuation
15. 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.
Repeaters
IPv6
X.25
Spread Spectrum
16. Type of firewall that is a proxy-based firewall solution. It is circuit-based and does not provide any application-based proxies.
SOCKS Firewall
802.11
Synchronous Data Link Control (SDLC)
Application Proxy vs. Circuit Level
17. 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.
Packet Filtering Firewall
Application Proxy vs. Circuit Level
Dynamic Packet Filtering
Multilevel Switching
18. 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.
OSI Layer 5: Session Layer
Trunk Lines
Application Proxy vs. Circuit Level
Source Routing
19. 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.
Trunk Lines
Port Numbers
Password Authentication Protocol (PAP)
Point-To-Point Tunneling Protocol (PPTP)
20. Protocol based on the first version - however this version allows for fixed bandwidth to be allocated for specific applications.
Crosstalk
Subnetting
DNS (Domain Name System)
FDDI-2
21. Wireless LAN standard. Variations include 802.11a - b - f - g - and i. Commonly accepts are 802.11b and g.
Loki Attack
OSI Layer 1: Physical
Metropolitan Area Network (MAN)
802.11
22. Type of firewall that lies between the perimeter router and and LAN.
Dual-Homed Firewall
High Level Data Link Control (HLDC)
Screened Host Firewall
Multilevel Switching
23. Problems: Central device is a single point of failure.
Iterated Association
DOS attacks from flooding
Star Topology
Spam over Internet Telephony (SPIT)
24. 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
Half-Duplex
Circuit Switching
Packet Switching
Temporal Key Integrity Protocol (TKIP)
25. Protocol that translates a MAC address into an IP address.
Commonly used in Internet.
Reverse Address Resolution Protocol (RARP )
Permanent Virtual Circuit (PVC)
Bluejacking
26. Wireless communication that distributes individual signals across the allocated frequencies.
ICMP (Internet Control Message Protocol)
Spread Spectrum
802.11
Fiber Distributed Data Interface (FDDI)
27. A technique that allows multiple layers of nesting. Example - IPSec tunnel can originate or terminate at a different IPSec site along the way.
Plenum-rated Cables
ICMP (Internet Control Message Protocol)
Iterated Association
Direct Sequence Spread Spectrum (DSSS)
28. 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)
Subnetting
Metropolitan Area Network (MAN)
Challenge Handshake Authentication Protocol (CHAP)
29. 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.
Open System Authentication (OSA)
LLC (Logical Link Control - 802.2)
Coaxial Cables
VLAN
30. Protocol for allowing multi-cast (one to many) communication
Permanent Virtual Circuit (PVC)
Metropolitan Area Network (MAN)
IGMP
Layer 2 Tunneling Protocol (L2TP)
31. 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.
Application Proxy Firewall
Layers in the OSI Model
OSI Data encapsulation
IGMP
32. 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.
Bus Topology
Token Ring (802.5)
Frame Relay
10baseT
33. 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.
LLC (Logical Link Control - 802.2)
Full-Duplex
TCP/IP. TCP is reliable and connection oriented - IP is unreliable and connectionless.
DOS attacks from flooding
34. Type of firewall that can be compromised if the OS does not have packet forwarding or routing turned off.
Proxy Firewall
CBC-MAC Protocol (CCMP)
Dual-Homed Firewall
Repeaters
35. 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.
OSI Layer 5: Session Layer
Dedicated Links
Distributed Environment Challenge
OSI Layer 2: Data Link Layer
36. Type of ethernet implementation that uses a standard coaxial cable with a maximum cable length of 185 meters. 10Mbps.
ThinNet - aka 10base2
Pulse Code Modulation (PCM)
Coaxial Cables
Carrier sense multiple access with collision detection (CSMA/CD)
37. 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.
DNS (Domain Name System)
Port Numbers
Blue Boxing
Screened Host Firewall
38. Type of topology where computers all are connected to each other - which provides redundancy.
Commonly used in Internet.
UDP
Service Set ID (SSID)
ARP (Address Resolution Protocol)
39. 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.
802.11b
OSI Layer 5: Session Layer
Open Relay
Commonly used in Ethernet.
40. Type of wireless security standard that uses AES in CBC mode.
SOCKS Firewall
OSI Layer 5: Session Layer
Wide Area Network (WAN)
CBC-MAC Protocol (CCMP)
41. Type of network that allows large IP ranges to be divided into smaller - logical - and easier to maintain network segments.
SPIM
Subnetting
FDDI-2
Virtual Private Network (VPN)
42. Type of topology where all computers are connected by a unidirectional transmission link - and the cable is in a closed loop.
Synchronous Optical Networks (SONETS)
Commonly used in FDDI.
DNS (Domain Name System)
Proxy Firewall
43. Type of host that is locked down - hardened - system. Systems installed in the DMZ (firewalls - servers) should be installed on this type of host.
T3
Bastion Host
Star Topology
Network Address Translator (NAT)
44. 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)
VLAN
Application Proxy Firewall
SPIM
45. 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
Private Branch Exchange (PBX)
Blue Boxing
802.11i
OSI Layer 2: Data Link Layer
46. Both directions - both applications can send information at a time. Session Layer Communication Modes
Application Proxy Firewall
Full-Duplex
802.15
Extensible Authentication Protocol (EAP)
47. 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.
Wireless Application Protocol (WAP)
Fiber Distributed Data Interface (FDDI)
Circuit Level Proxy Firewall
Bridge
48. 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)
Bluejacking
Distributed Environment Challenge
802.11i
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.
Cable Modem
Permanent Virtual Circuit (PVC)
Frame Relay
Proxy Firewall Strengths
50. 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.
Router
Synchronous Communication
Carrier sense multiple access with collision detection (CSMA/CD)
Commonly used in Internet.