02/03/2019 Routing Basic Interview Questions and Answers | Networker Interview
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What is Routing?
The function of routing is to route packets between networks that are not locally attached.
What is a Router? Buy V
A Router is a networking device that performs routing which means it routes packets between devices that are on Inter
different networks.
A
A router is a Layer 3 device.
What are the different types of memory in the router?
RAM - Running configuration file: running-config is stored in RAM
NVRAM - Startup Configuration file: startup-config is stored in NVRAM
Flash Memory - IOS is stored in Flash Memory
ROM - Instructions for POST, Bootstrap program, Mini-IOS is stored in ROM
What are the possible locations of IOS image?
FLASH and TFTP Server.
What is ROM Monitor?
If the Bootstrap program is not able to find a valid IOS image, it will act as ROM Monitor.
ROM Monitor is capable of performing certain configuration task such as:-
Like
1. Recovering a lost password
2. Changing the configuration register value etc. Be the fi
3. Downloading IOS image using TFTP
What are the different modes in the router?
1. User Exec Mode - In User Exec mode, we can only view the configuration settings on the device but cannot Like
make any changes to the device configuration. IOS prompt in
user exec mode is Router>
2. Privilege Mode - In Privilege mode, we can both view and make changes to the configuration of a router. IOS
prompt in Privilege Mode is Router#
Command to navigate to privilege mode from user exec mode:-
Router>enable
Router#
3. Global Configuration Mode - In Global Configuration mode we can make global changes. Global changes are
the changes which affect the router (device) as a whole such as changing the hostname of a device. IOS prompt in
Privilege Mode is Router (config) #
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, 02/03/2019 Routing Basic Interview Questions and Answers | Networker Interview
Command to navigate to Global Configuration mode from Privilege mode:-
Router# configure terminal
Router (config) #
4. Specific Configuration Mode - We can navigate to a number of sub prompt from global configuration, such as
the interface prompts to configure the properties of a specific interface and the router mode to configure routing
protocols. IOS prompt in specific configuration mode for interface prompt is Router (configif) #
Example:-
Router (config) # interface fa0/0
Router (config-if) #
What is the command to enter PRIVILEGE mode from USER mode?
> enable
What is the command to enter Global Configuration mode from PRIVILEGE Mode?
# configure terminal
What is the command to reboot a router?
# reload
What is the command to backup IOS to TFTP server?
# copy flash tftp
What is the command to copy running-config to startup config?
# copy running-config startup-config
What is the command to display the current running configuration?
# show running-config
Define static routing?
In static routing, routes are manually configured on the router by a network administrator.
Advantages:
1. There is no overhead on the router CPU.
2. There is no bandwidth usage between routers.
3. It is secure as the administrator can choose to allow routing access to certain networks only.
Disadvantages:
1. The administrator must really understand the internetwork and how each router is connected in order to
configure routes correctly.
2. It is not feasible in large networks because maintaining it is a full-time job.
What is Default Route?
A default route specifies a path that the router should take if the destination is unknown. All the IP datagrams
with unknown destination address are sent to the default route.
What is a Dynamic Routing?
In Dynamic routing, routes are learned by using a routing protocol. Routing protocols will learn about routes
from other neighboring routers running the same routing protocol. Example- OSPF, EIGRP, RIP.
What is a Routed Protocol?
A Routed Protocol carries data from one network to another network. Routed protocol carries user traffic such as
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Networker Interview
Prepare for CCNA, CCNP, CCIE Interview !
CCNA CCNP CCIE QUICK NOTES CCNA PDF DOWNLOAD
Routing Basic Interview Questions and Answers Searc
What is Routing?
The function of routing is to route packets between networks that are not locally attached.
What is a Router? Buy V
A Router is a networking device that performs routing which means it routes packets between devices that are on Inter
different networks.
A
A router is a Layer 3 device.
What are the different types of memory in the router?
RAM - Running configuration file: running-config is stored in RAM
NVRAM - Startup Configuration file: startup-config is stored in NVRAM
Flash Memory - IOS is stored in Flash Memory
ROM - Instructions for POST, Bootstrap program, Mini-IOS is stored in ROM
What are the possible locations of IOS image?
FLASH and TFTP Server.
What is ROM Monitor?
If the Bootstrap program is not able to find a valid IOS image, it will act as ROM Monitor.
ROM Monitor is capable of performing certain configuration task such as:-
Like
1. Recovering a lost password
2. Changing the configuration register value etc. Be the fi
3. Downloading IOS image using TFTP
What are the different modes in the router?
1. User Exec Mode - In User Exec mode, we can only view the configuration settings on the device but cannot Like
make any changes to the device configuration. IOS prompt in
user exec mode is Router>
2. Privilege Mode - In Privilege mode, we can both view and make changes to the configuration of a router. IOS
prompt in Privilege Mode is Router#
Command to navigate to privilege mode from user exec mode:-
Router>enable
Router#
3. Global Configuration Mode - In Global Configuration mode we can make global changes. Global changes are
the changes which affect the router (device) as a whole such as changing the hostname of a device. IOS prompt in
Privilege Mode is Router (config) #
http://networkerinterview.net/entries/routing-basic/ip-routing-basic 1/6
, 02/03/2019 Routing Basic Interview Questions and Answers | Networker Interview
Command to navigate to Global Configuration mode from Privilege mode:-
Router# configure terminal
Router (config) #
4. Specific Configuration Mode - We can navigate to a number of sub prompt from global configuration, such as
the interface prompts to configure the properties of a specific interface and the router mode to configure routing
protocols. IOS prompt in specific configuration mode for interface prompt is Router (configif) #
Example:-
Router (config) # interface fa0/0
Router (config-if) #
What is the command to enter PRIVILEGE mode from USER mode?
> enable
What is the command to enter Global Configuration mode from PRIVILEGE Mode?
# configure terminal
What is the command to reboot a router?
# reload
What is the command to backup IOS to TFTP server?
# copy flash tftp
What is the command to copy running-config to startup config?
# copy running-config startup-config
What is the command to display the current running configuration?
# show running-config
Define static routing?
In static routing, routes are manually configured on the router by a network administrator.
Advantages:
1. There is no overhead on the router CPU.
2. There is no bandwidth usage between routers.
3. It is secure as the administrator can choose to allow routing access to certain networks only.
Disadvantages:
1. The administrator must really understand the internetwork and how each router is connected in order to
configure routes correctly.
2. It is not feasible in large networks because maintaining it is a full-time job.
What is Default Route?
A default route specifies a path that the router should take if the destination is unknown. All the IP datagrams
with unknown destination address are sent to the default route.
What is a Dynamic Routing?
In Dynamic routing, routes are learned by using a routing protocol. Routing protocols will learn about routes
from other neighboring routers running the same routing protocol. Example- OSPF, EIGRP, RIP.
What is a Routed Protocol?
A Routed Protocol carries data from one network to another network. Routed protocol carries user traffic such as
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