HW 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
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
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%
Which of the following is not a requirement in order to use a softphone?
A wireless carrier to handle the voice path
