Network Chapter 12 Quiz

The DTE or endpoint device for a leased line is known as which device below?

In a public switched telephone network, lines are terminated at the central office.

DSL signals travel over telephone lines using the 300 to 3300 Hz frequency range.

Considering that multiple users occupy the same channel when using CDMA, how are various calls using this technology kept separate?

Most satellites circle the Earth 22,300 miles above the equator in a geosynchronous orbit.

In an ISDN connection, what amount of throughput did a single B channel provide?

An 802.11ac signal can travel for approximately 2 miles from the source.

WANs connect nodes, such as workstations, servers, printers, and other devices, in a small geographical area on a single network.

In a frame relay WAN, the ISP typically has the data circuit terminating equipment (DCE).

Which statement regarding the use of cable modems is NOT accurate?

When using satellite services for your WAN connection, what statement is accurate?

Multiplexing enables a single T1 circuit to carry how many channels?

Although MPLS can operate over Ethernet frames, it is more often used with other Layer 2 protocols, like those designed for WANs.

In North America, what ISDN connection type used two B channels and one D channel?

Which SONET OC level is a popular choice for large businesses, and is equivalent to 100 T1s?

What is the maximum throughput of a DS3 connection?

With a SIP trunk, what is the only limitation on the number of calls that can run at any one time?

The word "synchronous" as used in the name of Synchronous Optical Network means that data being transmitted and received by nodes must conform to a timing scheme.

When using DOCSIS 3.0, what is the minimum number of channels that can be used?

In a cellular network, where does each wireless base station connect to?

What type of virtual circuit allows connections to be established when parties need to transmit, then terminated after the transmission is complete?

In a public switched telephone network, what portion of the network is known as the local loop?

The T-carrier standards, also called T-CXR standards, utilize what type of multiplexing over two wire pairs to create multiple channels?

Of all the DSL standards, which is the most commonly in use today?

How many transponders are contained within a typical satellite?

The C-Band utilized by satellites consists of what frequency range?

What OC level is primarily used as a regional ISP backbone, and occasionally by very large hospitals, universities, or other major enterprises?

Where are MPLS labels placed within a frame?

What is a data-link connection identifier (DLCI) utilized for?

A fractional T1's bandwidth can be leased multiples of what data rate?

On an ATM network, how is the path that data will take determined?

Which statement regarding the Asynchronous Transfer Mode (ATM) technology is accurate?

The Global System for Mobile Communications (GSM) utilizes what technology to create timeslots on a channel?

What is the size of an ATM cell, including the header?

DSL services require many subscribers to share the same local line, causing potential security concerns.

Which of the following Layer 1 WAN technologies is not normally used as last mile service, but rather traverses multiple ISP networks, connecting these networks to the Internet backbone?

Which type of DSL technology has equal download and upload speeds maxing out at around 2 Mbps?

CDMA (Code Division Multiple Access) is an open standard that is accepted and used worldwide.

In metro settings, end-to-end, carrier-grade Ethernet networks can be established via what protocol?

Which of the following is an advantage of leasing a frame relay circuit over leasing a dedicated circuit?

A hot site consists of computers, devices, and connectivity necessary to rebuild a network exist, but without appropriate configuration.

Which type of uninterruptible power supply uses AC power to continuously charge its battery, while also providing power to devices through the battery?

You can find out where various logs are kept on some UNIX and Linux systems by viewing the /etc/syslog.conf or /etc/rsyslog.conf files.

The Link Aggregation Control Protocol was initially defined by what IEEE standard?

In planning for disaster recovery, what is the ultimate goal?

When using DiffServ, what type of forwarding utilizes a minimum departure rate from a given node, which is then assigned to each data stream?

Most UNIX and Linux desktop operating systems provide a GUI application for easily viewing and filtering the information in system logs.

What Storage Area Network (SAN) protocol runs on top of TCP, and can be used on an existing twisted-pair Ethernet network, while maintaining low cost?

The SNMP version 3 protocol introduces authentication, validation, and encryption for messages exchanged between devices and the network management console.

Once a device has failed, what metric measures the average amount of time to repair?

Which type of backup scheme only covers data that has changed since the last backup?

A network TAP serves what purpose on a network?

When viewing a syslog message, what does a level of 0 indicate?

What makes up the first 6 bits of the 8-bit DiffServ field?

Which of the following statements describes a RAID 0 configuration?

Setting a NIC to run in promiscuous mode will allow it to see all network traffic passing through a network switch.

A brownout is a momentary decrease in voltage; also known as a sag.

Packets that are smaller than a medium's minimum packet size are known by what term below?

What does the Common Address Redundancy Protocol do?

Class of Service utilizes 8 levels of priority, and modifies the PCP field in an 802.1Q tag.

When Comcast was found to be interfering with BitTorrent traffic, what method was being used?

Each managed object on a managed device using SNMP is assigned which of the following?

When a device handles electrical signals improperly, usually resulting from a bad NIC, it is referred to by what term below?

How does a line conditioning UPS protect network equipment?

What is distributed switching?

What 3-bit field in a 802.1Q tag is modified to set a frame's Class of Service (CoS)?

Wireshark or any other monitoring software running on a single computer connected to a switch doesn't see all the traffic on a network, but only the traffic the switch sends to it, which includes broadcast traffic and traffic specifically addressed to the computer.

A highly available server is available what percentage of the time?

A snapshot is most similar to which type of backup scheme?

The grouping of multiple servers so that they appear as a single device to the rest of the network is known as which term?

What statement regarding the use of a network attached storage device is accurate?

When using SNMP with TLS, what port do agents receive requests on?

A system with an availability of 99.999% can be down for a maximum of 52 minutes per year.

If you wish to maintain a "4 nines" availability rating, what is the maximum amount of down time you can have per day?

You are attempting to determine how available your Linux systems are, and need to find the current system uptime. What command should you use?

A RAID 5 configuration requires a minimum of two hard disks to operate.

At what point is a packet considered to be a giant?

A differential backup covers what data on a system?c

What term is used to describe the average amount of time that will pass for a device before a failure is expected to occur?

What happens when an NMS uses the SNMP walk command?