Network+ Chapter 9

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

161

RTP and RTCP operate at which layer of the OSI model?

Application layer

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

H.225

What federal organization sets strict standards to protect the privacy of patient records?

HIPAA

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?

SIP

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​

What command retrieves the next record in an SNMP log?

snmpgetnext

What utility in Linux provides standards for generating, storing, and processing messages about events on a system?

syslog

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

unicast

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%

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

​giants

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

​A wireless carrier to handle the voice path.

​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

Which QoS technique operates at the OSI layer "2.5"?

MPLS

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

PCI DSS

What port do SNMP agents listen on?

Port 161

What kind of phone is a Skype app?

Softphone

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?

Top listeners

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?

Traffic policing

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

​SS7

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

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