Networking

How large is the maximum Ethernet frame, including the CRC?

1518

A Uniform Resource Locater (UR)L contains information

A URL contains the information a browser needs to retrieve a page.

Select the two purposes of version information in HTTP?

Allows servers to choose highest version that is understood by both sender and receiver. c. Forces users to use most up-to-date software.

Which fields are contained in the Ethernet frame header?

Destination Address d. Type field e. Source Address

Asymmetric Digital Subscriber Line (ADSL) technology uses a set frequency and modulation technique to transmit signals across local loops.

False

In parallel transmission, the number of wires are always in multiples of eight.

False

Isochronous transmission can occur at any time with an arbitrary delay between the transmission of two data items.

False

Select the four major HTTP request types.

HEAD, PUT, GET, and POST

Which of the following does not describe a characteristics of HTML?

HTML allows a browser to adapt the web page to the underlying display hardware.

Communication using frequencies set aside for environments where electromagnetic interference may be present uses _________ wireless technologies.

ISM

Select the four types of personal area network (PAN) technologies.

InfraRed c. Bluetooth f. ZigBee g. ISM wireless

Electronic mail access protocols standards included

POP IMAP SMTP

The HTTP request type _______ is used to send data to a server where it is appended to a specific item.

POST

Which of the following is not a typical characteristics of server software?

Server softwaredoes not require powerful computer hardware.

Describe the client-server model of interaction.

The server starts first and awaits contact by the client.

A keyboard transmission signal is an example of asynchronous transmission.

True

A typical residential subscriber receives much more information than the subscriber sends. Internet access technologies are designed to transfer more data in one direction than the other.

True

Because it uses frequency division multiplexing, ADSL and traditional analog phone service (POST) can use the same wires simultaneously.

True

In the US, a digital circuit leased from a telephone company follows the same digital transmission standards that the phone company uses to transport

True

Synchronous Optical Network (SONET) defines a broad set of standards used for digital transmission that specifies details such as how data is framed and how lower-capacity circuits are multiplexed into a higher-capacity circuit.

True

Synchronous Transport Signal (STS) are a series of standards for digital high-capacity circuits

True

The three building blocks of a wireless LAN are ____________ , _______________, and ___________ .

access point b. wireless hosts or nodes e. switch or router

The designation of the various types of Ethernet cabling, such as 1000BaseT, defines both the type of cable and the data rate.

address recognition c. CRC computation d. frame recognition

What three general properties define a packet switched paradigm?

b. Arbitrary, asynchronous communication e. No set-up required before communication begins f. Performance varies due to statistical multiplexing among packets

mechanism used to connect two LAN segments and forward frames from one segment to another is called a

bridge

Local Area Networks (LANs) are classified according to their topology. What is the logical topology of the third generation (twisted pair) Ethernet?

bus

Local Area Networks (LANs) are classified according to their topology. What is the physical topology of the original Thicknet version of Ethernet?

bus

Match the network topology with its description.

computers connected in a closed loop c. Ring computers have a direct connection between each pair b. Mesh computers connected by a single cable a. Bus computers are all attached to a central point d. Star

Which Internet stream service operates similar to a telephone call?

connection-oriented

Peer-to-peer service is implemented as one way to avoid creating a central bottleneck in network connections. Peer-to-peer architecture is defined as

data distributed equally among a set a server and each client request is sent to the appropriate server.

Communication between two parties on a circuit switched network is affected by communication between other parties sharing a common medium.

false

Each service available in the Internet is assigned a unique identifier know as an IP Address.

false

Increasing the length of the transmission medium is necessary in order to send signals across greater distances on a LAN.

false

Twisted pair Ethernet uses RJ45 connectors which are interchangeable with the jacks used to connect telephones.

false

The Internet communication stream paradigm can run over TCP or UDP.

false TCP

Define the three types of IEEE addresses that correspond to the three types of packet delivery.

identifies a subset of the computers on a given network, and specifies that each computer in the subset should receive a copy of the packet c. multicast uniquely identifies a single computer, and specifies that only the identified computer should receive a copy of the packet b. unicast corresponds to all computers, and specifies that each computer on the network should receive a copy of the packet

is used for line-of-sigh communication between a small device, often a hand-held controller, and a nearby system such as a compute or entertainment center.

infrared

Radio Frequency Identification (RFID) primary use is for

inventory control, sensors, and passports.

Domain Name System (DNS)

is a service that maps human-readable symbolic names to computer addresses.

Name the two conceptual parts of each frame.

payload header

Application-layer protocols specify two aspects of interaction:

representation and transfer.

Local Area Networks (LANs) are classified according to their topology. What is the physical topology of the third generation (twisted pair) Ethernet?

star

The purpose of Name Resolution is to

translate a domain name into an address.

A browser can reduce download times significantly by saving a copy of each image in a cache on the user's disk and using the cached copy.

true

A packet using the message paradigm is limited to 64 Kbytes per message.

true

Circuit switching refers to a communications mechanism that establishes a path between sender and receiver with guaranteed isolation from paths used by other pairs of senders and receivers.

true

Multimedia applications use the Internet communication message paradigm.

true

Packet switching forms the basis for the Internet.

true

The Ethernet frame format has remained unchanged since the first standard, however, the cables and the wiring scheme have changed dramatically.

true

The designation of the various types of Ethernet cabling, such as 1000BaseT, defines both the type of cable and the data rate.

true

The expense of packet switching technologies depend on the distances they span.

true

The purpose of fiber modem extensions is to accept packets over the Ethernet interface and send over optical fiber, and accept packets off the optical fiber and send them over the Ethernet interface.

true

The server must be running before the client can make contact.

true

Spread spectrum transmission use multiple frequencies to send data.

true\

Jitter is caused by:

variations in delay

The terms client and server arose from

which side initiates contact.