Interview Questions Related with network security.
Q1 What a re the two basics responsibilities of routing?
Q2 hat does the term Hop stand for?
Q3 What is the default boot sequence of new Cisco router?
Q4 Routers update each other about the metrics by communicating with ont another and maintaining their routing tables through the transmission of a variety of messages. (T/F)
Q5 what is the meaning of convergence in term of routing?
Q6 What are the generic parts of Layer 3 Address?
Q7 what is routed and routing protocols?
Q8 List the name of Routed and routing protocols?
Q9 Give the example of Routed and non routed protocols?
Q10 what metric does RIP use to update its routing table?
Q11 In which Cisco router modes would an ICMP ping be used for troubleshooting a network?
Q12 what is the command to encrypt all passwords stored in a Cisco router?
Q13 In cisco routers IP addresses are configured in the ------ mode
Q14 What are the design goals for routing algorithms?
Q15 some of the routing protocols combile the metrics to get the best path and faster convergence (T/F)
Q16 List the name of commonly used routed protocols?
Q17 Configuration files of Cisco routers stores in----
Q18 When the router is online the configurations are read from----
Q19 In Cisco routers, Is it possible to protect the user Exec mode by a password (T/F)
Q20 What a re the commands to configure a Telnet Password in Cisco Router?
Q21 Which one is the most important command to check LAN/WAN connectivity problems in a routers?
Q22 Which command would you execute to view the current configuration of a router?
Q23 You need to issue the command Show Startup-config from privileged mode. Ho can you tell you are in the privileged mode?
Q24 Users on your network 10.1.0.0/16 are complaining that they cannot access the company's internet server using the FQDN "www.company.com". Your are able to ping the IP address of the internet server, but cannot ping "www.company.com". why?
Q25 Auxiliary port in Cisco router is used for ----
Q26 You have been assigned the task to secure the router. What will be your first step towards securing the routers passwords?
Q27 In a distance vector routing protocol, a failed route is advertised for a time with a metric that implies the network is of "infinite" distance. (T/F)
Q28 In a distance vector routing protocol, a failed route is advertised for a time with a metric that implies the network is of "Zero" distance. (T/F)
Q29 When installing the IGRP routing protocol, what information you needed to configure IGRP?
Q30 Where does a router stores routing tables, ARP Cache, and packet buffers?
ACL
Q1 You have just created an IP extended ACL and now wish to apply this to an interface. Which command will allow you to apply the list to an interface?
Q2 Write the number ranges for Standard and Extended ACL?
Q3 Write an example of Standard and Extend ACL.
Q4 Which statement should you uses to deny telnet access only from Network 2.0 to Network 3.0?
Q5 A Standard ACL is based upon Source IP Address. (T/F)
Q6 A Extended ACL is based upon Destination IP address. (T/F)
Q7 What is the wildcard mask for a standard ACL for the Network of IP address 192.168.1.1?
Q8 In terms of an ACL , what does "1" signify in a WCM?
Q9 In terms of an ACL , what does "0" signify in a WCM?
Q10 What commands may be used to view your ACL?
Q11 If you issued the command show access-list 10 , what would be displayed?
Q12 you have been called in to fix a router that is having security issues. The router has an ACL configured on it but the list does not seem to be working. What command can you use to see if the ACL has been applied to an interface?
What are the two basic responsibilities of Router?
Ans: Configuring a Software Router or Implementing the CIDR concept.
What dose the term of Hub?
What is boot sequence of a new Router to locate the IOS Software?
Ans: Post (Power on self test the Hardware) à ROM (Loads the bootstrap program & search when IPS is located) à Flash (IOS found in flash loading IOS) à NVRA< (Flash contact the NVRAM for configuration file) à RAM (NVRAM configuration copied into RAM)
What are the generic parts of Layer 3 Address?
Deference between Routing and Routed Protocols?
What does metric RIP using to update its routing table?
In which Cisco router modes would on ICMP ping be used for troubleshooting a network?
What is the command to encrypt all passwords storing Cisco Router?
In Cisco Router IP address are configured the ____________ mode.
What are the designed goals for Routing Algorithms?
Some of the Routing combine the metrics to get the best path and fasters conversion is (T/F)
List the commonly used Routed Protocols?
Routed and Routing Protocols?
Configure file for the Cisco Router as _______________.
When the Router is online the configuration of read from __________________.
In Cisco Routers, is it possible to protect the user Exec mode by a password (T/F).
What are the commands configure of telnet password in Cisco Router?
Which one is most important command to check LAN & WAN connectivity problems in a Router?
Which command would execute to view the current configuration of a Router?
We need to issue the command show startup configuration for Prevails mode, how can you tell your are in the preevelige mode?
Users on you network 10.1.0.0/16 are compiling the they can’t access the computer’s internet server using the FQDN www.company.com your able to ping the IP address of the Internet server, but can’t ping www.company.com . Why?
Auxiliary port in Cisco Router using for ________________.
You have been assign the task to secure the Router, what will be the first step towards securing the Router password?
In a distance vectore Routing protocol, a failed route is advertised for a time with a metric that implies the network is of “infinite” distance. (T/F)
In a distance vectore Routing protocol, a failed route is advertised for a time with a metric that implies the network is of “0” distance. (T/F)
When installing IGRP routing protocol, what information you need to configure IGRP?
Where does a Router stores routing tables, ARP Cache, and packet buffers?
Router updates each other about the metrics by communicating with one another and maintaining their routing tables through the transmission of a verity of messages. (T/F)
What is the meaning of convergence in term of routing?
Give the example of Routed and non-routed protocols?
What do you mean by network topology? Give an example?
Write down (10) commonly used service and port numbers?
Explain and define difference between Hub & Switch, Router & Bridge?
Deference between Desktop Operating System and Server Operating System?
Define and range of IP address of Class A, B, C, D & E?
What do you mean by Sub-net mask?
What is the port number of TCP/IP, ICNP?
Explain a brief connection less and connection oriented with example?
Draw a diagram of cross cable, straight cable and roller cable?
What is the data communication Range in Cat V, Cat Ve, Cat VI?
Explain various range of Radio or Wireless communication?
What is the technology used to communication in wireless LAN & WAN network equipment?
What do you mean by DCE & DTE devices give an example?
What is the difference between Broadcast, Multicast and Unicast?
ACL
1. You have just created an IP extended ACL and now wish to apply this to an interface. Which command will allow you to apply the list to an interface?
Ans: Interface Ethernet 0.
2 Write the number ranges for Standard and Extended ACL?
Ans: 1 – 99 for Standard, 100 – 199 for Extended AEL.
3 Write an example of Standard and Extend ACL.
Ans:
4 Which statement should you uses to deny telnet access only from Network 2.0 to Network 3.0?
Ans: Access-list deny tcp 192.168.2.0 0.0.0.255 192.168.3.1 0.0.0.0 eg 80.
5 A Standard ACL is based upon Source IP Address. (T/F)
Ans: True
6 A Extended ACL is based upon Destination IP address. (T/F)
Ans: True.
7 What is the Wild Card Mask for a standard ACL for the Network of IP address 192.168.1.1?
Ans: 0.0.0.0
8 In terms of an ACL , what does "1" signify in a WCM?
Ans: IGNORE
9 In terms of an ACL , what does "0" signify in a WCM?
Ans: MUST MATCH
10 What commands may be used to view your ACL?
Ans: show ip access-list
11 If you issued the command show access-list 10 , what would be displayed?
Ans:
12 you have been called in to fix a router that is having security issues. The router has an ACL configured on it but the list does not seem to be working. What command can you use to see if the ACL has been applied to an interface?
Ans:
Q2 hat does the term Hop stand for?
Q3 What is the default boot sequence of new Cisco router?
Q4 Routers update each other about the metrics by communicating with ont another and maintaining their routing tables through the transmission of a variety of messages. (T/F)
Q5 what is the meaning of convergence in term of routing?
Q6 What are the generic parts of Layer 3 Address?
Q7 what is routed and routing protocols?
Q8 List the name of Routed and routing protocols?
Q9 Give the example of Routed and non routed protocols?
Q10 what metric does RIP use to update its routing table?
Q11 In which Cisco router modes would an ICMP ping be used for troubleshooting a network?
Q12 what is the command to encrypt all passwords stored in a Cisco router?
Q13 In cisco routers IP addresses are configured in the ------ mode
Q14 What are the design goals for routing algorithms?
Q15 some of the routing protocols combile the metrics to get the best path and faster convergence (T/F)
Q16 List the name of commonly used routed protocols?
Q17 Configuration files of Cisco routers stores in----
Q18 When the router is online the configurations are read from----
Q19 In Cisco routers, Is it possible to protect the user Exec mode by a password (T/F)
Q20 What a re the commands to configure a Telnet Password in Cisco Router?
Q21 Which one is the most important command to check LAN/WAN connectivity problems in a routers?
Q22 Which command would you execute to view the current configuration of a router?
Q23 You need to issue the command Show Startup-config from privileged mode. Ho can you tell you are in the privileged mode?
Q24 Users on your network 10.1.0.0/16 are complaining that they cannot access the company's internet server using the FQDN "www.company.com". Your are able to ping the IP address of the internet server, but cannot ping "www.company.com". why?
Q25 Auxiliary port in Cisco router is used for ----
Q26 You have been assigned the task to secure the router. What will be your first step towards securing the routers passwords?
Q27 In a distance vector routing protocol, a failed route is advertised for a time with a metric that implies the network is of "infinite" distance. (T/F)
Q28 In a distance vector routing protocol, a failed route is advertised for a time with a metric that implies the network is of "Zero" distance. (T/F)
Q29 When installing the IGRP routing protocol, what information you needed to configure IGRP?
Q30 Where does a router stores routing tables, ARP Cache, and packet buffers?
ACL
Q1 You have just created an IP extended ACL and now wish to apply this to an interface. Which command will allow you to apply the list to an interface?
Q2 Write the number ranges for Standard and Extended ACL?
Q3 Write an example of Standard and Extend ACL.
Q4 Which statement should you uses to deny telnet access only from Network 2.0 to Network 3.0?
Q5 A Standard ACL is based upon Source IP Address. (T/F)
Q6 A Extended ACL is based upon Destination IP address. (T/F)
Q7 What is the wildcard mask for a standard ACL for the Network of IP address 192.168.1.1?
Q8 In terms of an ACL , what does "1" signify in a WCM?
Q9 In terms of an ACL , what does "0" signify in a WCM?
Q10 What commands may be used to view your ACL?
Q11 If you issued the command show access-list 10 , what would be displayed?
Q12 you have been called in to fix a router that is having security issues. The router has an ACL configured on it but the list does not seem to be working. What command can you use to see if the ACL has been applied to an interface?
What are the two basic responsibilities of Router?
Ans: Configuring a Software Router or Implementing the CIDR concept.
What dose the term of Hub?
What is boot sequence of a new Router to locate the IOS Software?
Ans: Post (Power on self test the Hardware) à ROM (Loads the bootstrap program & search when IPS is located) à Flash (IOS found in flash loading IOS) à NVRA< (Flash contact the NVRAM for configuration file) à RAM (NVRAM configuration copied into RAM)
What are the generic parts of Layer 3 Address?
Deference between Routing and Routed Protocols?
What does metric RIP using to update its routing table?
In which Cisco router modes would on ICMP ping be used for troubleshooting a network?
What is the command to encrypt all passwords storing Cisco Router?
In Cisco Router IP address are configured the ____________ mode.
What are the designed goals for Routing Algorithms?
Some of the Routing combine the metrics to get the best path and fasters conversion is (T/F)
List the commonly used Routed Protocols?
Routed and Routing Protocols?
Configure file for the Cisco Router as _______________.
When the Router is online the configuration of read from __________________.
In Cisco Routers, is it possible to protect the user Exec mode by a password (T/F).
What are the commands configure of telnet password in Cisco Router?
Which one is most important command to check LAN & WAN connectivity problems in a Router?
Which command would execute to view the current configuration of a Router?
We need to issue the command show startup configuration for Prevails mode, how can you tell your are in the preevelige mode?
Users on you network 10.1.0.0/16 are compiling the they can’t access the computer’s internet server using the FQDN www.company.com your able to ping the IP address of the Internet server, but can’t ping www.company.com . Why?
Auxiliary port in Cisco Router using for ________________.
You have been assign the task to secure the Router, what will be the first step towards securing the Router password?
In a distance vectore Routing protocol, a failed route is advertised for a time with a metric that implies the network is of “infinite” distance. (T/F)
In a distance vectore Routing protocol, a failed route is advertised for a time with a metric that implies the network is of “0” distance. (T/F)
When installing IGRP routing protocol, what information you need to configure IGRP?
Where does a Router stores routing tables, ARP Cache, and packet buffers?
Router updates each other about the metrics by communicating with one another and maintaining their routing tables through the transmission of a verity of messages. (T/F)
What is the meaning of convergence in term of routing?
Give the example of Routed and non-routed protocols?
What do you mean by network topology? Give an example?
Write down (10) commonly used service and port numbers?
Explain and define difference between Hub & Switch, Router & Bridge?
Deference between Desktop Operating System and Server Operating System?
Define and range of IP address of Class A, B, C, D & E?
What do you mean by Sub-net mask?
What is the port number of TCP/IP, ICNP?
Explain a brief connection less and connection oriented with example?
Draw a diagram of cross cable, straight cable and roller cable?
What is the data communication Range in Cat V, Cat Ve, Cat VI?
Explain various range of Radio or Wireless communication?
What is the technology used to communication in wireless LAN & WAN network equipment?
What do you mean by DCE & DTE devices give an example?
What is the difference between Broadcast, Multicast and Unicast?
ACL
1. You have just created an IP extended ACL and now wish to apply this to an interface. Which command will allow you to apply the list to an interface?
Ans: Interface Ethernet 0.
2 Write the number ranges for Standard and Extended ACL?
Ans: 1 – 99 for Standard, 100 – 199 for Extended AEL.
3 Write an example of Standard and Extend ACL.
Ans:
4 Which statement should you uses to deny telnet access only from Network 2.0 to Network 3.0?
Ans: Access-list deny tcp 192.168.2.0 0.0.0.255 192.168.3.1 0.0.0.0 eg 80.
5 A Standard ACL is based upon Source IP Address. (T/F)
Ans: True
6 A Extended ACL is based upon Destination IP address. (T/F)
Ans: True.
7 What is the Wild Card Mask for a standard ACL for the Network of IP address 192.168.1.1?
Ans: 0.0.0.0
8 In terms of an ACL , what does "1" signify in a WCM?
Ans: IGNORE
9 In terms of an ACL , what does "0" signify in a WCM?
Ans: MUST MATCH
10 What commands may be used to view your ACL?
Ans: show ip access-list
11 If you issued the command show access-list 10 , what would be displayed?
Ans:
12 you have been called in to fix a router that is having security issues. The router has an ACL configured on it but the list does not seem to be working. What command can you use to see if the ACL has been applied to an interface?
Ans:
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