CHAPTER 2

Question 1

Cisco Internetwork Operating System (IOS):

Answer 1

The collection of network operating systems used by Cisco networking devices.

Question 2

Command-Line Interface (CLI):

Answer 2

A user interface that depends on textual commands being entered by the user. (Terminal)

Question 3

Console:

Answer 3

Data transfer that requires the establishment of a virtual circuit.

Question 4

Domain Name System (DNS):

Answer 4

An internet-wide system by which a hierarchical set of DNS servers collectively hold all the name-to-IP address mappings, and DNS servers refer users to the correct DNS server to successfully revolve a DNS name.

Question 5

Dynamic Host Configuration Protocol (DHCP):

Answer 5

A protocol used to assign IP configuration to hosts.

Question 6

Firmware:

Answer 6

Permanent software programmed into ROM memory.

Question 7

Global Configuration Mode:

Answer 7

A mode used to configure global parameters or enter other configuration sub modes.

Question 8

Graphical User Interface (GUI):

Answer 8

A user-friendly interface that uses graphical images and widgets to indicate the information and actions available to a user

Question 9

IPv4 Address:

Answer 9

A 32-bit number written in dotted decimal notation

Question 10

IPv6 Address:

Answer 10

A 128-bit address written in hexadecimal

Question 11

Kernel:

Answer 11

The portion of the operating system that interacts directly with computer hardware.

Question 12

Nonvolatile Random-Access Memory:

Answer 12

RAM that does not lose its contents when the device is powered off.

Question 13

Ping:

Answer 13

A troubleshooting tool used to verify network connectivity by sending a packet to a specific IP address and waiting for the reply.

Question 14

Privileged EXEC Mode:

Answer 14

An IOS administration level mode that supports access to configuration and management commands.

Question 15

Random-Access Memory (RAM):

Answer 15

Memory that can have new data written to it and that can have stored data read from it.

Question 16

Secure Shell (SSH):

Answer 16

A protocol that provides a secure remote connection to a host through a TCP application.

Question 17

Shell:

Answer 17

The portion of the operating system that interfaces with applications and the user.

Question 18

Subnet Mask:

Answer 18

A dotted decimal number that helps identify the structure of IPv4 addresses.

Question 19

Switch Virtual Interface (SVI):

Answer 19

A virtual interface for which there is no associated physical hardware on the device.

Question 20

Telnet:

Answer 20

A non-secure network service that supports CLI access to a remote host.

Question 21

Traceroute:

Answer 21

A command that discovers the IP addresses and hostnames of the routers when sending a packet from one computer to another.

Question 22

User EXEC Mode:

Answer 22

The limited CLI mode when the commands available to the user are a subset of those available at the privileged level.

Question 23

Virtual Terminal (vty):

Answer 23

A text-based logical interface on an IOS device. It is accessed using Telnet or SSH to perform administrative tasks.