Chapter 9 Flashcards
1
Q
SNMP agents receive requests from an NMS on what port number? A) 161 B) 162 C) 163 D) 160
A
A) 161
2
Q
What security standard below was created to protect credit card data and transactions, requiring network segmentation as part of security controls? A) CALEA B) HIPAA C) PCI DSS D) CAARA
A
C) PCI DSS
3
Q
Packets that exceed the maximum packet size are known by what term? A) giants B) runts C) ghosts D) jabbers
A
A) giants
4
Q
Packets that are smaller than a medium's minimum packet size are known by what term below? A) jabbers B) giants C) ghosts D) runts
A
D) runts
5
Q
When a device handles electrical signals improperly, usually resulting from a bad NIC, it is referred to by what term below? A) ghost B) jabber C) talker D) blabber
A
B) jabber
6
Q
Which of the following is not a requirement in order to use a softphone?
A) An IP telephony client
B) The ability to communicate with a digital telephone switch
C) A microphone and speakers, or a headset
D) A wireless carrier to handle the voice path
A
D) A wireless carrier to handle the voice path
7
Q
What percentage of internet traffic, as estimated by Cisco Systems, will be devoted to video traffic by 2018? A) 20% B) 65% C) 79% D) 93%
A
C) 79%
8
Q
In a VoIP call, what method of transmission is used between two IP phones? A) global multicast B) multicast C) unicast D) broadcast
A
C) unicast
9
Q
On circuit switched portions of a PSTN, what set of standards established by the ITU is used to handle call signaling? A) MCU B) H.323 C) H.225 D) SS7
A
D) SS7
10
Q
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? A) H.323 terminal B) H.323 gateway C) H.323 gatekeeper D) MCU
A
B) H.323 gateway
11
Q
In H.323, which protocol below handles call or videoconference signaling? A) H.225 B) H.245 C) H.200 D) H.252
A
A) H.225
12
Q
A computer that provides support for multiple H.323 terminals and manages communication between them is known as what term below? A) H.323 gateway B) H.323 gatekeeper C) MCU D) H.323 server
A
C) MCU
13
Q
A server running the SIP protocol listens on what TCP/UDP port for unsecured communications? A) 6050 B) 5060 C) 5061 D) 6051
A
B) 5060
14
Q
What component of SIP is a server that responds to user agent clients' requests for session initiation and termination? A) proxy server B) registrar server C) user agent server D) redirect server
A
C) user agent server
15
Q
When using SIP, what term is used to descibe end-user devices, which may include workstations, tablet computers, smartphones, or IP phones? A) user agent B) user agent client C) user agent proxy D) user agent node
A
B) user agent client