Network+ Guide to Networks 7th Edition Chapter 9

In H.323, which protocol below handles call or videoconference signaling?

H.225

Which element of H.323 is a device that provides translation between network devices running the H.323 signaling protocols and devices running other types of signaling protocols?

H.323 gateway

A computer that provides support for multiple H.323 terminals and manages communication between them is known as what term below?

MCU

What protocol enables multiple types of Layer 3 protocols to travel over any one of several connection-oriented Layer 2 protocols?

MPLS

What security standard below was created to protect credit card data and transactions, requiring network segmentation as part of security controls?

PCI DSS

On circuit switched portions of a PSTN, what set of standards established by the ITU is used to handle call signaling?

SS7

When using DiffServ, what type of forwarding utilizes a minimum departure rate from a given node, which is then assigned to each data stream?

expedited forwarding

Packets that exceed the medium's maximum packet size are known by what term?

giants

When a device handles electrical signals improperly, usually resulting from a bad NIC, it is referred to by what term below?

jabber

In order for gateways to exchange and translate signaling and control information with each other so that voice and video packets are properly routed through a network, what intermediate device is needed?

media gateway controller

Packets that are smaller than a medium's minimum packet size are known by what term below?

runts

In a VoIP call, what method of transmission is used between two IP phones?

unicast

When using SIP, what term is used to describe end-user devices, which may include workstations, tablet computers, smartphones, or IP phones?

user agent client

What component of SIP is a server that responds to user agent clients' requests for session initiation and termination?

user agent server

Which of the following is not a requirement in order to use a softphone?

A wireless carrier to handle the voice path.

SNMP agents receive requests from an NMS on what port number?

161

The Priority Code Point field in a frame consists of how many bits?

3 bits

A server running the SIP protocol listens on what TCP/UDP port for unsecured communications?

5060

What percentage of Internet traffic, as estimated by Cisco Systems, will be devoted to video traffic by 2018?

79%

A highly available server is available what percentage of the time?

99.99%