TT0-201 Exam Questions

Realtime Transport Protocol (RTP) can run on top of various protocols. Which is the most commonly implemented with RTP?

In Europe, the Middle East, and Africa, which of the following provides 30 64-Kbps channels for data or voice, and two channels for signaling information?

Consider the following information: - You are outsourcing your e-mail server. - A spam filter has been implemented. - You are running an internal DNS server. - A Session Border Con...

You want to tunnel QSIG traffic across a data network connection. Which convergence protocol could you use?

Which of the following is required to allow multiple gateways to create a videoconference?

You have been informed that an SIP-enabled PBX named gatekeeper.ctpcertified.com allows you to access a configuration screen at port 8080 using any standard Web browser. The port r...

Which of the following statements is true of using VLANs to subnet a network?

Which of the following is a drawback of using a private IP address?

How does the 3-bit User Priority field found in an 802.1q frame help voice quality in LAN-based communications?

Which convergence protocol is ASCII-based, and will become the de facto standard for voice and video?

Which codec provides high voice quality, is considered current, and uses only 8 Kbps of bandwidth?

Which of the following is based on Extensible Authentication Protocol (EAP), usually uses a RADIUS server, and can be used to authenticate wireless voice and video users, but does...

Your organization owns a block of public IP addresses, 152.2.0.0/16. The network administrators have created multiple subnets by using a /25 subnet mask. How many subnets were crea...

You are extending your wired network by adding several wireless access points. You do not foresee a need to support wireless voice devices, but you are required to have wireless da...

Which low-overhead transport-layer protocol is generally used to establish calls in SIP implementations and to carry voice packets during an established session?

You are configuring an SIP device. Which of the following is a valid SIP URI to enter if you need to specify a non-standard port?

The Session Initiation Protocol (SIP) uses the ASCII text standard to format its messages. The

What happens to a protocol data unit as information passes from OSI/RM Layer 1 to Layer 7?

In an H.323 implementation, which of the following protocols is responsible for establishing, controlling and ending calls?

What is the purpose of a jitter buffer?

Which device often functions in a manner that introduces significant problems for SIP-based voice connections, and often requires a workaround?

An SIP phone that you recently installed is experiencing voice quality issues. Which action should you consider to improve voice quality?

Which of the following correctly describes the address spaces of IPv4 and IPv6?

Which industry standard for measuring voice is now preferred because it is non-subjective and is based on actual network performance measurements?

Which feature is commonly provided in an IP-based PBX, but not in a traditional PBX?

Which of the following is one of the three layers specified in the IP Multimedia Subsystem (IMS)?

Which of the following attacks exploits switches that use the default VLAN and autotrunking?

Your customer has asked you to enable fax messages to be delivered to her computer so she can read them in her e-mail client. Which protocol should you implement on your convergenc...

You are implementing a VoIP solution for a company that has an existing switching and VLAN implementation and a routed WAN. After carrying out a network health check, you have isol...

According to the International Telecommunications Union (ITU), how much delay can a one-way connection encounter, yet still provide toll-quality voice in which users do not notice...

Which protocols are implemented in an H.323 gatekeeper to help traverse firewalls when Network Address Translation (NAT) is being used?

What is the size of the VLAN ID field?

Which of the following best describes the mechanisms used in traffic shaping?

Which of the following best describes an E1 line used for voice data?

Which of the following is a drawback of the original Wireless Multimedia Extensions (WME) standard?

Which of the following symptoms might occur on a large network that carries both voice and traditional data if VLAN tagging has not been properly implemented?

You have installed a wireless access point. Which protocol is most likely to ensure that wireless voice and video clients will enjoy high-quality voice connections through this dev...

Which of the following will most likely trigger priority handling by network devices implementing the 802.1q and 802.1p protocols in a LAN?

Which of the following would NOT be a result of implementing 802.1q and placing IP phones in their own VLAN?

You are using symmetric Network Address Translation (NAT) in your network. You need a workaround for your Session Initiation Protocol (SIP) devices. You are using SIP phones from m...

An IP phone has had difficulty obtaining an IP address. You are using a packet sniffer to determine whether this device is able to request an IP address from a DHCP server. As you...

An SIP proxy server has the following IP configuration: 172.80.54.23/20 Which is the correct address for the network containing this server?

Which DNS record must be updated when implementing an SIP VoIP solution in which Dynamic Delegation Discovery System (DDDS) is being used?

Alice is on Network A. Using the Windows tracert utility, she discovers a network path through Router 1 to her colleague Bob on Network B. She can use tracert to see the path to Bo...

Consider the following output of the tracert command: of 30 hops: 1 2 ms 1 ms 2 ms 192.168.1.1 2 13 ms 9 ms 12 ms 10.160.64.1 3 10 ms 11 ms 11 ms 68.2.9.21 4 9 ms 10 ms 8 ms 68.2.1...

What impact does the 3-bit User Priority field in an 802.1q frame have to help voice quality in LAN-based communications?