Network+ Chapter 9
QoS is another name for?
CoS - Class of Service
TCP is preferred over UDP for real time services.
False
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
The ______ gateway control protocol which performs the same functions as MGCP, but uses different commands and processes along with an increased feature set.
Megaco
____ provides feedback on the quality of a call or video-conference to its participants.
RTCP
Which of the following IS NOT a type of back up?
Segmented backup
CALEA requires telecommunications carriers and equipment manufacturers to provide for surveillance capabilities
True
Most UNIX and Linux desktop operating systems provide a GUI application for easily viewing and filtering the information in system logs
True
The SNMP version 3 protocol introduces authentication, validation, and encryption for messages exchanged between devices and the network management console
True
Wireshark or any other monitoring software running on a single computer connected to a switch doesn't see all the traffic on a network, but only the traffic the switch sends to it, which includes broadcast traffic and traffic specifically addressed to the computer.
True
What two terms below are used to describe an analog-to-digital voice conversion device that accepts and interprets both analog and digital voice signals?
digital PBX IP PBX
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
network that has been optimized for media transmissions is called a _______.
medianet
What two terms below describe a network device with three ports, two of which send and receive all traffic, and the third port mirrors the traffic?
network tap packet sniffer
What two terms below describe the process of manipulating certain characteristics of packets, data streams, or connections to manage the type and amount of traffic traversing a network or interface at any moment?
packet shaping traffic shaping
What two terms below are used to describe a telephone switch that connects and manages calls within a private organization?
private branch exchange PBX
The term ___________ refers to an implementation in which more then one component is installed and ready to use for storing, processing or transorting data.
redundancy
Pick all of the components of a SIP network from the list below.
registrar sever user agent proxy server
Packets that are smaller than a medium's minimum packet size are known by what term below?
runts
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
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%
