Network+ Chapter 9
H.225
In H.323, which protocol below handles call or videoconference signaling?
media gateway controller
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?
Application layer
RTP and RTCP operate at which layer of the OSI model?
161
SNMP agents receive requests from an NMS on what port number?
3 bits
The Priority Code Point field in a frame consists of how many bits?
snmpgetnext
What command retrieves the next record in an SNMP log?
79%
What percentage of Internet traffic, as estimated by Cisco Systems, will be devoted to video traffic by 2018?
Port 161
What port do SNMP agents listen on?
expedited forwarding
When using DiffServ, what type of forwarding utilizes a minimum departure rate from a given node, which is then assigned to each data stream?
A wireless carrier to handle the voice path.
Which of the following is not a requirement in order to use a softphone?
SIP
You're trying to choose a signaling protocol for your company's network because you're about to upgrade to a VoIP system. You need to keep it simple because this is a small company with a simple network. Which protocol should you choose?
unicast
In a VoIP call, what method of transmission is used between two IP phones?
SS7
On circuit switched portions of a PSTN, what set of standards established by the ITU is used to handle call signaling?
runts
Packets that are smaller than a medium's minimum packet size are known by what term below?
user agent server
What component of SIP is a server that responds to user agent clients' requests for session initiation and termination?
H.323 gateway
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?
MCU
A computer that provides support for multiple H.323 terminals and manages communication between them is known as what term below?
99.99%
A highly available server is available what percentage of the time?
5060
A server running the SIP protocol listens on what TCP/UDP port for unsecured communications?
Top listeners
One of your coworkers downloaded several, very large video files for a special project she's working on for a new client. When you run your network monitor later this afternoon, what list will your coworker's computer likely show up on?
MPLS
What protocol enables multiple types of Layer 3 protocols to travel over any one of several connection-oriented Layer 2 protocols?
syslog
What utility in Linux provides standards for generating, storing, and processing messages about events on a system?
jabber
When a device handles electrical signals improperly, usually resulting from a bad NIC, it is referred to by what term below?
giants
Packets that exceed the medium's maximum packet size are known by what term?
HIPAA
What federal organization sets strict standards to protect the privacy of patient records?
Softphone
What kind of phone is a Skype app?
PCI DSS
What security standard below was created to protect credit card data and transactions, requiring network segmentation as part of security controls?
user agent client
When using SIP, what term is used to describe end-user devices, which may include workstations, tablet computers, smartphones, or IP phones?
MPLS
Which QoS technique operates at the OSI layer "2.5"?
Traffic policing
Your roommate has been hogging the bandwidth on your router lately. What technique can you use to limit the amount of bandwidth his computer can utilize at any one time?
