Cisco DiscoveryWorking at a Small-to-Medium Business or ISP

CHAPTER 7 ISP Services

Jr

ISP ServicesISP Services TCP/IPTCP/IP DNSDNSServices & Services & ProtocolsProtocols

Grab Bag Grab Bag

100 100 100 100 100

200 200 200 200 200

300 300 300 300 300

400 400 400 400 400

500 500 500 500 500

ISP Services 100

Mean Time Between Failure and Mean Time to Repair. The longer the MTBF, the greater the fault tolerance.

A: What is reliability?

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ISP Services200

A: What is the Availability?

Normally measured in the percentage of time that a resource is accessible.

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ISP Services300

A: What is the consumer market?

Individuals make up this market…

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ISP Services400

A: What is the SLA?

A managed service, service provider manages the network equipment and support. This agreement is called an _______.

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ISP Services500

A: What is the “five 9s”?

Telephone services are expected to be available 99.999% of the time.

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TCP/IP100

A: What is Converged networks?

Allows all different services to be delivered over a common netwok. I.e., mobile phones as TVs, PCs as telephones.

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TCP/IP200

A: What is a SMTP?

Enables clients to send email to a mail server

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TCP/IP300

A: What is a socket pair?

Consists of the source and destination IP address and port numbers.192.168.1.1:7151, 10.10.10.101:80

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TCP/IP400

A: What is UDP?

“best effort” delivery protocol, connectionless, low overhead data delivery, e.g.. Internet Radio

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TCP/IP500

A: What is a three way handshake?

This SYN, SYN-ACK, ACK activity is known as a _______________.

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DNS100

A: What is the HOSTS file?

File that contained the mapping of hostname and IP address for every device connected to the early Internet.

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DNS200

A: What is top-level domains?

These are examples of ______ domains;

.au, .com, .jp, .gov

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DNS300

A: What is Reverse lookup zone?

Special zone that lets you resolve an IP address to a fully qualified domain name

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DNS400

A: What is DNS Reverse Lookup?

Ping –a 192.168.0.6

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DNS500

A: What is caching only DNS servers?

ISPs typically maintain these types of DNS servers.

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Services & Protocols100

A: What is HTTPS?

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Protocol uses authentication and encryption to secure data as it travels between client and server. Specifies additional rules for passing data between the application between the

applications layer and the transport layer. Uses SSL.

Services & Support200

A: What is FTP?

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Requires two (2) connections to exist between the client and the server—one to send control information and commands and a second one for the actual file data transfer

Services & Protocols300

A: What is a email hosting?

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Store and forward method of sending, storing and retrieving electronic messages across a network.

Services & Protocols400

A: What is a IMAP4?

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Protocol that describes a method to retrieve email messages. Copies the message down to the client application and original messages are kept on the server until they are manually deleted.

Services & Protocols500

A: What is a SMTP

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Uses well known port 25.

Grab Bag 100

A: What is DNS?

Protocol used to resolve Internet names to IP addresses

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Grab Bag 200

A: What is a UDP?

_____traffic examples use this protocol:

DNS, VoIP, online games

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Grab Bag 300

A: What is a TCP and UDP?

Headers of these protocols have the following in common: source port, destination port and checksum

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Grab Bag 400

A: What is dynamic ?

This type of update allows client computers to register and update their resource records with a DNS server whenever changes occur

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Grab Bag500

A: What is Local?

mapping name-to-IP addresses for internal hosts and forwarding name resolution requests to a caching-only server are the responsiblities of the ______ DNS server

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Final Jeopardy

A: What is E-mail, web hosting, media streaming, IP telephony, file transfer?

Five key services provided by an ISP

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Final Jeopardy

A: What is the PING command?

Command that sends some TCP/IP data to the computer that you specify in the command. It the device is configured properly, it answers back.

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