Commands

Question 1

Command used to view the routing table

Answer 1

show ip route

Question 2

What does the bracket [120/2] mean in ip routing

Answer 2

[AD/hop-count]

Question 3

Command to show where have a DTE or a DCE cable

Answer 3

show controllers interface

Question 4

Command to view access-lists

Answer 4

show access-list

Question 5

Command used to view ipv6 routing table

Answer 5

show ipv6 route

Question 6

Command to check config NVRAM and storage left

Answer 6

show startup-config

Question 7

Command to view specifies about a port-security on an interface

Answer 7

show port-security interface interface

Question 8

Command to view mac address-table

Answer 8

show mac-address table

Question 9

Command to view interfaces on Router/Switch

Answer 9

show ip interface brief

Question 10

Command to view interfaces with ipv6 addresses

Answer 10

show ipv6 interface brief

Question 11

Command to view parameters of a specific interface

Answer 11

show interface interface

Question 12

Command to save running-config

Answer 12

copy running-config startup-config

Question 13

Command to view info about each IP address currently leased to a client

Answer 13

show ip dhcp binding

Question 14

Command to view the list of config ranges of IP addresses from each pool

Answer 14

show ip dhcp pool pool name

Question 15

Command to view directly connected devices

Answer 15

show cdp neighbor

Question 16

Command to view basic IP address translation info

Answer 16

show ip nat translations

Question 17

Command to delete startup-config

Answer 17

# erase startup-config
# reload

Question 18

Command to verify NAT config and see the sending address, the translation and the destination address

Answer 18

debug ip nat

Question 19

Commands to set password for user-exec mode

Answer 19

# line con 0
# password *password*
# login
# logging sync

Question 20

Command to set password for privileged-exec mode

Answer 20

# enable secret *password*
# service password-encryption

Question 21

Commands to set up static NAT config

Answer 21

ip nat inside source static ip address

# interface fa0/0 
# ip address *ip address* *subnet mask*
# ip nat inside

# interface se0/0
# ip address *ip address*
# ip nat outside

Question 22

Commands to set up dynamic NAT config

Answer 22

ip nat pool pool name ip address ip address netmask mask

# interface fa0/1 
# ip address *ip address* *subnet mask*
# ip nat inside

# interface se0/0
# ip address *ip address*
# ip address *ip address* *subnet mask*
# ip nat outside

access-list # permit ip address wildcard mask

Question 23

Commands for PAT config

Answer 23

# ip nat pool globalnet *ip address* *ip address* netmask *subnet mask*
# ip nat inside source list *#* pool globalnet overload

# interface fa0/1 
# ip address *ip address* *subnet mask*
# ip nat inside

# interface se0/0
# ip address *ip address*
# ip address *ip address* *subnet mask*
# ip nat outside

access-list # permit ip address wildcard mask

Question 24

Commands to set password for telnet

Answer 24

# line vty *first line num* *last line num*
# password *password* 
# login

Question 25

Command to disable DNS lookup function on a router

Answer 25

no ip domain-lookup

Question 26

Commands to add a ipv4 address to an interface

Answer 26

``` # interface *interface* # ip address *ip address* *subnet mask* ```

Question 27

Commands to set up ssh

Answer 27

``` # ip domain-lookup # username *name* password *password* # crypto key generator rsa ``` ``` # line vty 0 15 # login local # transport input *all, telnet, ssh* ```

Question 28

Command to set up a static route

Answer 28

ip route *destination* *subnet mask* *next-hop*

Question 29

Command to set up a default route

Answer 29

ip route 0.0.0.0 *ip address*

Question 30

Commands to make hosts DHCP clients

Answer 30

``` # interface *interface* # ip address dhcp ```

Question 31

Commands to config RIP routing

Answer 31

``` # router rip # network *classful net address* # version 2 # no auto-summary ```

Question 32

Command that prevents RIP update broadcasts from being sent to a specific interface

Answer 32

``` # router rip # passive-interface *interface* ```

Question 33

Command to enable port-security

Answer 33

``` # interface *interface* # switchport mode access # switchport port-security ```

Question 34

Command for security to have MAC address dynamically learned and added to running-config

Answer 34

switchport port-security mac-address sticky

Question 35

Command for security that limits the max addresses learned to 1

Answer 35

switchport port-security maximum 1

Question 36

Command for security that is the default violation mode and puts the interface into an error-dissabled state immediately

Answer 36

switchport port-security violation shutdown

Question 37

Command to enable ipv6 in global-config

Answer 37

ipv6 unicast-routing

Question 38

Command to enable IPv6 to a specific interface

Answer 38

ipv6 enable

Question 39

Command to assign an interface with an IPv6 address

Answer 39

ipv6 address *ip address* *prefix* (eui-64)

Question 40

Commands to config DHCP

Answer 40

``` # ip dhcp excluded-address * excluded address range* # ip dhcp pool *pool name* # network *network address* *subnet mask* # default-router *router int address* # dns-server *ip address* # lease *days hours min* ```

Question 41

Command to view lease of DHCP

Answer 41

show ip dhcp binding

Question 42

Command to det. next DHCP address to use

Answer 42

show ip dhcp pool

Question 43

Commands to set up a VLAN

Answer 43

``` # vlan *2-1001/1006-4094* # name *WORD* # interface *interface* # switchport mode *access/trunk* # switchport *access/trunk* #switchport *access/trunk* vlan *2-1001/1006-4094* ```

Question 44

Commands to config Inter-VLAN routing

Answer 44

``` # interface f0/0.1 # encapsulation dot1q *vlan num* # ip address *address* *subnet mask* ```

Question 45

Commands to config DHCP relay

Answer 45

``` # interface *interface* # ip helper-address *dhcp server ip address* ```

Question 46

Command to assign severity level range

Answer 46

logging trap *severity level*

Question 47

Command to sync dates and times on a network

Answer 47

ntp server *ip address* *version*

Question 48

Commands to set up standard access-list

Answer 48

``` # access-list *1-99* *deny/permit* *host/any/ip address range* *subnet mask* # interface fa0/1 # ip access-group *1-99* *in/out* ```

Question 49

Commands to set up standard access-list to telnet/ssh

Answer 49

``` # access-list 50 permit host 172.16.10.3 # line vty 0 4 # access-class 50 in ```

Question 50

Commands to set up extended access-list

Answer 50

``` # access-list *100-199* *deny/permit* *protocol* *source add* *dest add* # access-list *100-199* permit ip any any #interface f0/1 #ip access-group *100-199* *in/out* ```

Question 51

Commands to set up a named standard access

Answer 51

``` # ip access-list standard *WORD* # deny *ip add* *sub mask* # permit any # exit # interface *int* # ip access-group *WORD* out ```

Question 52

Command to show access port VLANs

Answer 52

#show vlan

Question 53

Command to show trunked ports

Answer 53

show interface trunk

Question 54

Command to show details about a specific switchport

Answer 54

show interface *int* switchport

Question 55

Command to permanently install a license on an ISR2 router

Answer 55

license install

Question 56

Command that will copy the IOS to a backup host on your network

Answer 56

copy flash tftp

Question 57

Command that loads a new version of the cisco IOS into a router

Answer 57

copy tftp flash

Question 58

Distance from the reference clock

Answer 58

stratum

Question 59

Belongs to and carries the traffic of only one VLAN

Answer 59

access ports (no tagging)

Question 60

Way of explicitly tagging VLAN info onto an ethernet frame

Answer 60

Inter-switch link (ISL)

Question 61

Command to map an ipv6 static unicast address?

Answer 61

ipv6 address *address/prefix-length*

Question 62

Command to enable ipv6?

Answer 62

ipv6 address

Question 63

Command to map a link-local address?

Answer 63

ipv6 address *address* link-local