A router is considered to be a CSU/DSU.
False
T-Carrier lines only require a CSU/DSU on the customer's side of the connection.
False
Multiprotocol Label Switching (MPLS) supports both IPv4 and IPv6, as well as other network layer protocols.
True
Link Control Protocol is responsible for the setup of a PPP connection, as well as the termination of a connection when it has ended.
True
Packet switched WANs use virtual circuits to ensure that packets are delivered reliably and at the agreed-on bandwidth level.
True
Your local ISP has provided you with a dedicated line that has a Committed Information Rate of 1.54 Mbps. What does this mean?
1.54 Mbps is the guaranteed minimum transmission rate.
Select the true statement regarding analog and digital signals.
Analog signals vary over time continually and can be represented by a sine wave, while digital signals are binary 1s and 0s using voltage levels.
Which of the following is something X.25 does NOT offer?
144 Mbps maximum throughput
What is the local loop, or last mile?
the connection between the demarcation point and the CO
When would you most likely NOT choose to use a leased line connection?
when a nondedicated link is needed for backups
You're the network administrator for a large bean-bag chair company. You are presenting to your supervisor several reasons to make use of cloud computing for handling data processing. Which answer would be a valid benefit of using cloud computing?
reduced physical plant costs
Which of the following terms describes the category of cloud computing in which a customer develops applications using development tools and infrastructure provided by the service provider?
platform as a service
Which of the following protocols is NOT used for Windows 7 VPN connections?
SMTP
You are a network architect for an IT consulting company. One of your clients needs a WAN connection and has asked you about the disadvantage of a packet-switched WAN method. Which of the following is a disadvantage that applies?
shared bandwidth
You have been asked to install a VPN remote access solution using Windows Server.What do you need to install?
Routing and Remote Access Service (RRAS)
Which one of the following is NOT a typical SONET data rate?
OC-9001
What would an Asynchronous Transfer Mode (ATM) network be best suited for?
carrying voice data and time-sensitive information
Which cloud computing category allows a company to quickly provision additional disk space?
hosted infrastructure
Which cloud computing category refers to the use of software hosted on a service provider's network, and is usually subscription based?
software as a service
Which statement about Multiprotocol Label Switching (MPLS) is true?
MPLS works with any network layer protocol.
What is the signaling method used to allocate time slots for each channel in a T-carrier line called?
Time Division Multiplexing (TDM)
The company you work for currently has ISDN service in place. Your supervisor wishes to know what sort of ISDN service is being used so that better alternatives can be considered. He tells you that the service has two B-Channels and a D-Channel. What ISDN
Basic Rate Interface (BRI)
The plain old telephone service is a good example of what kind of WAN technology?
circuit switched
Although a frame relay connection is established in much the same way that a T1 connection is, which of the following is an important distinction between the two technologies?
T1 uses point to point, while frame relay makes use of virtual circuits.
Part of SONET's flexibility comes from its ability to be arranged in several different physical topologies. Which of the following is NOT a possible SONET topology?
fault tolerant bus
a category of cloud computing in which a customer pays for the use of applications that run on a service provider's network
SaaS
a remote access protocol that supports many protocols and is used to carry data over a variety of network connections
point-to-point protocol
a logical sequence of connections with bandwidth allocated for a specific transmission pathway
virtual circuit
a guaranteed minimum transmission rate offered by the service provider
Committed Information Rate (CIR)
the device that sends data to (and receives data from) the last mile; usually a CSU/DSU or modem
Data Circuit-terminating Equipment (DCE)
a device computers use to convert digital signals to analog signals
modem
a point-to-point permanent virtual circuit technology that offers WAN communications over a fast, reliable, digital packet-switching network
frame relay
a flexible, highly fault-tolerant technology that can carry signals of different capacities over a fiber-optic network at high speeds
Synchronous Optical Network (SONET)
the device that passes data from the customer Lan to the DCE, usually a router
Data Terminal Equipment (DTE)
connector for terminating a T1 line that provides diagnostic testing for troubleshooting the connection
smart jack