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Untitled 17 Flashcards

1
Q

__ topology e.g. Ethernet, ATM defines the rules of communication across the __ topology.

A

Logical topology (layer 2), Physical topology (layer 1)

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2
Q

__ applies labels to packets, is commonly used to privately control international networks and is much cheaper than dedicated lines.

A

MPLS (Multi Protocol Label Switching)

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3
Q

__ are asynchronous devices that provide dial-in and dial-out connections.

A

Access servers

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4
Q

__ are distributed series of caching web servers, designed to improve performance and availability by bring data closer to the end user.

A

CDN (Content Distribution Network)

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5
Q

__ are the signaling protocols and __ is the packetization of your voice.

A

SIP and H.323 (which is wrapped around SIP for security), RTP (Real-time protocol)

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6
Q

__ checks a system’s patches, antivirus and local firewall. If the client passes, access is granted, otherwise it is placed on an isolated VLAN where patches and antivirus updates may be provided.

A

NAC (Network Access Control). It builds on top of 802.1X.

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7
Q

__ communications is where data is just sent with no need for start and stop bits. It is more efficient since there is no overhead (start/stop bits) but trasmitting and receiving stations need to be synchronized.

A

Synchronous

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8
Q

__ communications is where data is sent by changes in levels of voltage or current in a sequential fashion. There are start and stop sequence bits.

A

Asynchronous

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9
Q

__ DSL has the same upload and download rates.

A

SDSL (symmetric)

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10
Q

__ DSL is higher download than upload. __ is much higher download than upload rates.

A

ADSL (Asymmetric), VDSL (very-high-data-rate)

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11
Q

__ DSL is used to provide the last mile of T1 service and uses two copper twisted pairs.

A

HDSL (high-rate)

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12
Q

__ extends Fibre channel to Ethernet networks.

A

FCoE (Fibre Channel over Ethernet) since FC was designed for high-performance directly attached storage.

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13
Q

__ integration is a common and phased approach for VoIP. The more long-term solution is __ integration.

A

PSTN PBX/VoIP integration: combines traditional and VoIP networks
IP PBX/PSTN integration:users must use VoIP phones, IP PBX is a soft-switch that routes calls

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14
Q

__ topology e.g. Ethernet, ATM defines the rules of communication across the __ topology.

A

Logical topology (layer 2), Physical topology (layer 1)

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15
Q

__ applies labels to packets, is commonly used to privately control international networks and is much cheaper than dedicated lines.

A

MPLS (Multi Protocol Label Switching)

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16
Q

__ are asynchronous devices that provide dial-in and dial-out connections.

A

Access servers

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17
Q

__ are distributed series of caching web servers, designed to improve performance and availability by bring data closer to the end user.

A

CDN (Content Distribution Network)

18
Q

__ are the signaling protocols and __ is the packetization of your voice.

A

SIP and H.323 (which is wrapped around SIP for security), RTP (Real-time protocol)

19
Q

__ checks a system’s patches, antivirus and local firewall. If the client passes, access is granted, otherwise it is placed on an isolated VLAN where patches and antivirus updates may be provided.

A

NAC (Network Access Control). It builds on top of 802.1X.

20
Q

__ communications is where data is just sent with no need for start and stop bits. It is more efficient since there is no overhead (start/stop bits) but trasmitting and receiving stations need to be synchronized.

A

Synchronous

21
Q

__ communications is where data is sent by changes in levels of voltage or current in a sequential fashion. There are start and stop sequence bits.

A

Asynchronous

22
Q

__ DSL has the same upload and download rates.

A

SDSL (symmetric)

23
Q

__ DSL is higher download than upload. __ is much higher download than upload rates.

A

ADSL (Asymmetric), VDSL (very-high-data-rate)

24
Q

__ DSL is used to provide the last mile of T1 service and uses two copper twisted pairs.

A

HDSL (high-rate)

25
__ extends Fibre channel to Ethernet networks.
FCoE (Fibre Channel over Ethernet) since FC was designed for high-performance directly attached storage.
26
__ integration is a common and phased approach for VoIP. The more long-term solution is __ integration.
PSTN PBX/VoIP integration: combines traditional and VoIP networks IP PBX/PSTN integration:users must use VoIP phones, IP PBX is a soft-switch that routes calls
27
__ is a helpful network path troubleshooting tool that shows each of the nodes from a local machine to a destination.
traceroute, part of ICMP and built on ping
28
__ is a layer 2 error correction for serial connections.
HDLC (High-Level Data Link Control)
29
__ is a layer 2 polling method for serial connections
SDLC (Synchronous Data Link Control)
30
__ is a simple, weak authentication mechanism that sends the password in plaintext. This can be mitigated by sending a hash of the password but this is still vulnerable to a replay attack.
PAP (Password Authentication Protocol)
31
__ is a TCP-based logon system with robust AAA, which is why Diameter came out.
TACACS (Terminal Access Controller Access Control System)
32
__ is a UDP-based logon system mostly focused on authentication and doesn't focus much on authorization and accounting.
RADIUS (Remote Authentication Dial In User Service)
33
__ is a vast improvement over WEP, requires NIC replacement and AP replacement or firmware upgrade (AES-CCMP).
WPA2
34
__ is an authentication mechanism that uses challenge/response authentication and is not vulnerable to a replay attack.
CHAP (Challenge-Handshake Authentication Protocol). It should be used instead of PAP wherever possible.
35
__ is an authentication mechanism, an extension to PPP and supports a variety of authentication protocols.
EAP (Extensible Authentication Protocol
36
__ is an IETF standard (RFC 2401) for establishing encrypted communication between users and devices. It offers sophisticated replay attack prevention and was issued as an open standard thus promoting multivendor interoperability.
IPsec VPN
37
__ is an improved version of RADIUS which focuses on all three areas of AAA.
Diameter
38
__ is an improvement over WEP (Wired Equivalent Privacy) and compatible with WEP hardware (TKIP).
WPA (Wi-Fi Protected Access)
39
__ is built on ping and used to plot the path a packet took through the network.
traceroute, part of ICMP and built on ping
40
__ is layer 2 network level authentication to authenticate a device, using MAC addresses (can be spoofed) and/or certificates.
802.1X. Using both would be ideal.

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