Data Communications and Network Services

SNMP (Simple Network Management Protocol)

A client packet is received by a server. The packet has a destination port number of 161. What service is the client requesting?

FTP (File Transfer Protocol)

A client packet is received by a server. The packet has a destination port number of 21. What service is the client requesting?

SSH

A client packet is received by a server. The packet has a destination port number of 22. What service is the client requesting?

HTTPS

A client packet is received by a server. The packet has a destination port number of 443. What service is the client requesting?

DNS (Domain Name System)

A client packet is received by a server. The packet has a destination port number of 53. What service is the client requesting?

DHCP (Dynamic Host Configuration Protocol)

A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting?

Dual stack

Allows IPv4 and IPv6 to coexist on the same network segment. Dual stack devices run both IPv4 and IPv6 protocol stacks simultaneously.

Tunneling

Is a method of transporting an IPv6 packet over an IPv4 network. The IPv6 packet is encapsulated inside an IPv4 packet, similar to other types of data.

Uniform Resource Identifier (URI)

Is a string of characters that identifies a specific network resource

Dynamic Host Configuration Protocol (DHCP)

Rather than have the network administrator assign IPv4 addresses for each workstation, it is easier to have IPv4 addresses assigned automatically. This is done using a protocol known as

Network Address Translation (NAT)

The process used to convert private addresses to internet-routable addresses. A private (local) source IPv4 address is translated to a public (global) address

Uniform Resource Locator (URL)

This defines the network location of a specific resource on the network. HTTP or HTTPS URLs are typically used with web browsers. Other protocols such as FTP, SFTP, SSH, and others can use a URL. A URL using SFTP might look like: sftp://sftp.example.com.

Uniform Resource Name (URN)

This identifies only the namespace of the resource (web page, document, image, etc.) without reference to the protocol

Router

Typically, which network device would be used to perform NAT for a corporate environment?

Depletion of IPv4 addresses

What is the most important motivating factor for moving to IPv6?

Link local

What type of IPv6 address is FE80::1?

Netstat

Which Windows command would display the protocols in use, the local address and port numbers, the foreign address and port numbers, and the connection state?

POP and IMAP

Which application protocols are used to by clients to retrieve email messages? (two.)

Transport Layer

Which layer of the TCP/IP model is responsible for ensuring packets are sent reliably and any missing packets are resent?

SLAAC

Which method of IPv6 prefix assignment relies on the prefix contained in RA messages?

Dual Stack

Which of the following techniques use native IPv6 connectivity?

Well Known Ports

Which port group includes port numbers for FTP, HTTP, and TFTP applications?

What is an advantage of using IPv6 ?

more addresses for networks and hosts