Configuring and Testing Network

Question 1

A router or switch can’t function without this….

Answer 1

Operating system

Question 2

Two configuration files

Answer 2

Running-config

Startup-config

Question 3

Access methods for CLI

Answer 3

Console: used to access a device when the network services failed or have not started, password, disaster recovery
Telnet, SSH ( requires at least one interface with Layer 3 address)
AUX port

Question 4

semi-permanent memory of Cisco IOS is called….

Answer 4

flash

Question 5

Major modes of Cisco IOS

Answer 5

user exec mode
privilieged exec mode
global config mode
other specific config mode

Question 6

Router>ping 192.168.1.3

Answer 6

Router = prompt
ping = command
192.168.1.3 = keyword or argument

Question 7

Cisco IOS help forms

Answer 7

Context sensitive
Command syntax check
Hot keys

Question 8

Some hot keys

Answer 8

CTRL-Shift-6: interrupts ping
CTRL-C: aborts current command and exits config mode
CTRL-Z: ends config mode, returns to EXEC
CTRL-R: redisplays line
Up arrow: scroll backwards through former commands
Down arrow: scroll forward through former commands

Question 9

Show command

Answer 9

offers info about configuration, operation and status of parts of Cisco router
Ex: show version, show ip route, show run, show start, show ip interface brief

Question 10

To negate effects of command….

Answer 10

Preface command with no: no hostname

Question 11

Types of passwords for Cisco IOS

Answer 11

console password: limits device access using console connection
enable password: limits access to privileged mode
enable secret password: encrypted version of enable password

Question 12

service password-encryption

Answer 12

provides weak encryption to all unencrypted passwords

Question 13

At startup….

Answer 13

Startup-config is copied from NVRAM to DRAM

Question 14

banner motd

Answer 14

messages seen by anyone who attempts to login to a Cisco router or switch

Question 15

Reload….

Answer 15

returns router to original configuration

Question 16

Modifying running-config…..

Answer 16

affects device operation immediately

Question 17

Configuring a switch interface

Answer 17

Switch does not require ip address, only a gateway

LAN switch interconnects segments within a network

Assign addresses to manage switch (assign to a VLAN)

Switch interfaces enabled by default unlike a router whose aren’t

Question 18

Ping

Answer 18

Uses ICMP protocol; referred to as testing the protocol stack; tests connectivity

Question 19

Ping 127.0.0.1

Answer 19

Pinging loopback address; verifies IP stack properly configured from Network Layer to Physical layer

Question 20

table?

Answer 20

up Status = Layer 1
up Protocol = Layer 2
ping, traceroute = Layer 3

Question 21

pinging remote hosts indicate…

Answer 21

the local host and the remote host are configured correctly

Question 22

ping IPv4

Answer 22

indicates NIC is functioning

Question 23

Test sequence of ping, traceroute

Answer 23

1. ping loopback
2. ping NIC
3. ping gateway
4. ping remote host
5. Traceroute to remote host
6. ipconfig

Question 24

Network baseline

Answer 24

studying network at consistent intervals using text files from ping, traceroute results

Question 25

More hot keys

Answer 25

CTRL-E: moves cursor to end of cmd line CTRL-K: cursor to end of line Esc D: cursor to end of word CTRL-U: cursor to the beginning of line CTRL-W: word to the left of the cursor moves cursor to the beginning of line Esc-B: moves cursor back one word to the left Esc-F: moves cursor back one word to the right