Cisco Chapter 6 Flashcards

Questions and Answers

What command should be issued to save the router configuration after troubleshooting?

copy running-config startup-config

Which IPv4 header field is responsible for defining the priority of the packet?

differentiated services

What is usually used to acknowledge the data receipt and request the retransmission of missing data in connectionless protocols?

upper-layer connection-oriented protocols

Why is NAT not needed in IPv6?

Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large. Signup and view all the answers

Which two interfaces will allow access via the VTY lines to configure the router? (Choose two.)

WAN interfaces Signup and view all the answers

What else has to be configured for Internet access if a computer already has an IP address, subnet mask, and DNS server?

the default gateway address Signup and view all the answers

Which three commands are used to set up a password for a person who attaches a cable to a new router? (Choose three.)

line console 0 Signup and view all the answers

A configured and activated router interface must be connected to another device in order to operate.

True Signup and view all the answers

If power to a router is lost and the configuration is not saved, which two types of information will be lost? (Choose two.)

Routing table Signup and view all the answers

How do hosts ensure that their packets are directed to the correct network destination?

They have to keep their own local routing table. Signup and view all the answers

What is a service provided by the Flow Label field of the IPv6 header?

It informs network devices to maintain the same path for real-time application packets. Signup and view all the answers

What will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?

switch the packet to the directly connected interface Signup and view all the answers

In a router, ____ is the nonvolatile memory where the diagnostic software, the bootup instructions, and a limited IOS are stored.

ROM Signup and view all the answers

Which two commands can be used on a Windows host to display the routing table? (Choose two.)

netstat -r Signup and view all the answers

How will a computer send a packet to a destination host in the same LAN?

The packet will be sent directly to the destination host. Signup and view all the answers

Which command displays a summary chart of all router interfaces, their IP addresses, and their current operational status?

show ip interface brief Signup and view all the answers

Which two files, if found, are copied into RAM as a router boots up with the default configuration register setting? (Choose two.)

startup configuration Signup and view all the answers

When would the Cisco IOS image held in ROM be used to boot the router?

when the full IOS cannot be found Signup and view all the answers

Study Notes

Router Configuration and Commands

To save a router's configuration for future reboots, use the command copy running-config startup-config.
Commands to configure a password for console access include password cisco, line console 0, and login.
The command show ip interface brief provides a summary of all router interfaces, their IP addresses, and operational statuses.

Network Protocols and Functionality

The IPv4 header field for defining priority is known as differentiated services.
In connectionless protocols, upper-layer connection-oriented protocols are often used to acknowledge data receipt and request retransmission of missing data.
In IPv6, Network Address Translation (NAT) is unnecessary due to the vast number of available public IPv6 addresses.

Router Interfaces and Connections

A configured and activated router interface needs to connect to another device to function properly.
WAN and LAN interfaces facilitate access via VTY lines for router configuration.

Routing and Networking Basics

For Internet access, a computer must have a configured default gateway address in addition to its IP address, subnet mask, and DNS server.
Hosts maintain a local routing table including routes to the loopback interface, local networks, and remote default routes to ensure packets reach the correct destination.

IPv6 and Traffic Forwarding

The Flow Label field in IPv6 headers informs devices to maintain the same path for packets from real-time applications.
Upon matching a destination IP address to a directly connected routing table entry, the router switches the packet to the corresponding interface.

Memory Types and Information Loss

In routers, nonvolatile memory where diagnostic software, boot instructions, and a limited IOS are stored is known as ROM.
If router power is lost and the configuration is unsaved, both the routing table and ARP cache will be lost.

Routing Tables and Network Commands

To display a routing table on a Windows host, commands route print or netstat -r can be utilized.
When a computer sends packets within the same LAN, those packets are sent directly to the destination host.

Startup Process in Routers

Upon booting with the default configuration register setting, a router may copy its startup configuration and IOS image into RAM.
The Cisco IOS image in ROM is used to boot the router if the full IOS cannot be found.

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Description

Test your knowledge with these flashcards covering key concepts from Chapter 6 of Cisco networking. Topics include router configurations, IPv4 header fields, and more. Ideal for students preparing for networking exams or certifications.