Configuring and Testing Network Flashcards Preview

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Flashcards in Configuring and Testing Network Deck (25):
1

A router or switch can't function without this....

Operating system

2

Two configuration files

Running-config
Startup-config

3

Access methods for CLI

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

4

semi-permanent memory of Cisco IOS is called....

flash

5

Major modes of Cisco IOS

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

6

Router>ping 192.168.1.3

Router = prompt
ping = command
192.168.1.3 = keyword or argument

7

Cisco IOS help forms

Context sensitive
Command syntax check
Hot keys

8

Some hot keys

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

9

Show command

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

10

To negate effects of command....

Preface command with no: no hostname

11

Types of passwords for Cisco IOS

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

12

service password-encryption

provides weak encryption to all unencrypted passwords

13

At startup....

Startup-config is copied from NVRAM to DRAM

14

banner motd

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

15

Reload....

returns router to original configuration

16

Modifying running-config.....

affects device operation immediately

17

Configuring a switch interface

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

18

Ping

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

19

Ping 127.0.0.1

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

20

table?

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

21

pinging remote hosts indicate...

the local host and the remote host are configured correctly

22

ping IPv4

indicates NIC is functioning

23

Test sequence of ping, traceroute

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

24

Network baseline

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

25

More hot keys

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