Cisco Interview Questions
* What is RIP?
* Define OSFP
* What is frame relay?
* What is ISDN?
* What is ATM?
* Define Qos?
* Define VLAN.
* Define switching.
* Define Trace route.
* What is the authentication method and how it works.
* How SNMP works?
* Define cryptography?
* Define subnets.
* What is ACL?
* Define port monitoring and mirroring.
* What is a router?
* What is a deadlock?
* What is virtual memory?
* What is multitasking?
Showing posts with label cisco. Show all posts
Showing posts with label cisco. Show all posts
Cisco Interview for Freshers Questions
Cisco Interview for Freshers Questions
Cisco 1st Round
1. Is windows/linux is preemptive or not(kernel).
2. Is the sheduler is a process or not.
3.What is the meaning of enabling kerenel level threading
4. What do you mean by allowing kernel preemption
5.What is the meaning of 8/16/32 bit operationg system
6. How interrupts will be handled in operating system
7.Why swapspace is required in operating system
8.how come a swapspace accessing is faster than normal secondary memory access though swapspace is a part of secondary memory.
9.What is the concept of micro kernel architecture
10.Is windows/linux is micro kernel architecture
11.Difference btw multi programming and multi processing
12.What is symmetric and asymmetric multi processing
12.Tell about IRQ's
12.How the devices are managed if more devices are available than IRQ lines
12.How the devices associated with a single IRQ line are managed.
13.How the operating system finds out which device has generated the interrupt in a single IRQ
14.Which ISR is serviced if we get an interrupt from an IRQ connected to more than one device.
13.write an inplace strrev routine
14.Why pointer manipulations are faster
15.int sum(int a,int b)
{
int s;
s = a + b;
return s;
}
convert this function to a macro......
16.Finding unduplicated element in a list of n elements where n-1 elements are duplicated.
17.Finding the no. of 1's in a binary representation of a number.
18.Two linked lists are given, if the two lists are merging at one point and becoming a single list from that point find out point of merging in linear time.
19.What is the difference btw char *s="iitg"
char s[]="iitg"
like compiler error or runtime error if we try to change the value of that s array
20.Basics in networks
like OSI layers and TCP layers
21.difference between Hub and switch and which layer each one belongs to
22.Is it possible to broadcast using a switch.
23.which is more suitable for broadcasting either a hub or a switch
24.What is class D addressing
25.How a DLL device(switch) knows about multicast addresses.
26.What is the difference between a router and gateway
27.What is the function of Multiport router
28.About Adhoc routing protocols
2 nd round(Team Lead interview)
1.Explain u r project work
2.Explain the routines that executes whenever the system boots up like ROM BIOS routines
3.What is the meaning of Partitioning and formating a disc
4.Is a system can have more than one primary partition
5.If linux and windows coexist which one lies on primary partition of the disk.
6.Which process executes first when os bootsup
7.What is master boot record
8.what is a super block
9.Which layer of networks u r most comfortable with (I told except physical layer I am comfortable with all other layers, then he started asking questions only on physical layer, though, I have answered well)
10.Tell about the significance of physical layer in networks
11.why fiber optics data rate is very high
12.What are advantages of fiber optics over normal copper or co-axial cables
13.Why cross talk and attenuation is insignificant in fiber cables
14. what is total internal reflection in fiber cables
15.what is single mode and multi modes in iptical fibers
16.Did u ever installed two windows versions on the same logical drive
17. Some questions on project
3 rd round(HR just for the formality)
1.Tell about u r self
2.Tell about any extra curricular activities and any significant work u have done in the past 2 years
3.Will u leave CISCO if some other company pays u high package
4.How can we believe in u r loyality towards the company
5.Any questions
Cisco 1st Round
1. Is windows/linux is preemptive or not(kernel).
2. Is the sheduler is a process or not.
3.What is the meaning of enabling kerenel level threading
4. What do you mean by allowing kernel preemption
5.What is the meaning of 8/16/32 bit operationg system
6. How interrupts will be handled in operating system
7.Why swapspace is required in operating system
8.how come a swapspace accessing is faster than normal secondary memory access though swapspace is a part of secondary memory.
9.What is the concept of micro kernel architecture
10.Is windows/linux is micro kernel architecture
11.Difference btw multi programming and multi processing
12.What is symmetric and asymmetric multi processing
12.Tell about IRQ's
12.How the devices are managed if more devices are available than IRQ lines
12.How the devices associated with a single IRQ line are managed.
13.How the operating system finds out which device has generated the interrupt in a single IRQ
14.Which ISR is serviced if we get an interrupt from an IRQ connected to more than one device.
13.write an inplace strrev routine
14.Why pointer manipulations are faster
15.int sum(int a,int b)
{
int s;
s = a + b;
return s;
}
convert this function to a macro......
16.Finding unduplicated element in a list of n elements where n-1 elements are duplicated.
17.Finding the no. of 1's in a binary representation of a number.
18.Two linked lists are given, if the two lists are merging at one point and becoming a single list from that point find out point of merging in linear time.
19.What is the difference btw char *s="iitg"
char s[]="iitg"
like compiler error or runtime error if we try to change the value of that s array
20.Basics in networks
like OSI layers and TCP layers
21.difference between Hub and switch and which layer each one belongs to
22.Is it possible to broadcast using a switch.
23.which is more suitable for broadcasting either a hub or a switch
24.What is class D addressing
25.How a DLL device(switch) knows about multicast addresses.
26.What is the difference between a router and gateway
27.What is the function of Multiport router
28.About Adhoc routing protocols
2 nd round(Team Lead interview)
1.Explain u r project work
2.Explain the routines that executes whenever the system boots up like ROM BIOS routines
3.What is the meaning of Partitioning and formating a disc
4.Is a system can have more than one primary partition
5.If linux and windows coexist which one lies on primary partition of the disk.
6.Which process executes first when os bootsup
7.What is master boot record
8.what is a super block
9.Which layer of networks u r most comfortable with (I told except physical layer I am comfortable with all other layers, then he started asking questions only on physical layer, though, I have answered well)
10.Tell about the significance of physical layer in networks
11.why fiber optics data rate is very high
12.What are advantages of fiber optics over normal copper or co-axial cables
13.Why cross talk and attenuation is insignificant in fiber cables
14. what is total internal reflection in fiber cables
15.what is single mode and multi modes in iptical fibers
16.Did u ever installed two windows versions on the same logical drive
17. Some questions on project
3 rd round(HR just for the formality)
1.Tell about u r self
2.Tell about any extra curricular activities and any significant work u have done in the past 2 years
3.Will u leave CISCO if some other company pays u high package
4.How can we believe in u r loyality towards the company
5.Any questions
Written test paper at Cisco interview Question paper
Written test paper at Cisco interview Question paper
1. The starting location of an array is 1000. If the array[1..5/...4] is stored in row major order, what is the location of element [4,3]. Each word occupies 4 bytes.
Ans: 1056 (Check it out for yourself!)
2. In a tertiary tree, which has three childs for every node, if the number of internal nodes are N, then the total number of leaf nodes are?
Ans: (2N+1)
3. Explain the term "locality of reference" ?
Ans: In computer science, locality of reference, also called the principle of locality, is the term applied to situations where the same value or related storage locations are frequently accessed. There are three basic types of locality of reference: temporal, spatial and sequential:
Temporal locality -
Here a resource that is referenced at one point in time is referenced again soon afterwards.
Spatial locality -
Here the likelihood of referencing a storage location is greater if a storage location near it has been recently referenced.
Sequential locality -
Here storage is accessed sequentially, in descending or ascending order.
4. What is the language used for Artificial Intelligence
Ans: lisp
5. What is the character set used in JAVA 2.0 ?
Ans: Unicode
6. char a =0xAA ;
int b ;
b = (int) a ;
b = b >> 4 ;
printf("%x",b);
What is the output of the above
program segment ?
Ans: fffffffa
7. struct s1 { struct { struct { int x; } s2 } s3 }y;
How does one access x in the above given structure definition ?
Ans: Compilation failes as ";" is missing immediately after declaration of the strcuture variables s2 and s3.
Otherwise, we can access x like this: y.s3.s2.x
8. Why there is no recursion in Fortran ?
Ans. There is no dynamic allocation.
9. What is the worst case complexity of Quick sort?
Ans. O(n2)
10. What will be sequence of operating system activities when an interrupt occurs ?
Ans: Most modern general purpose microprocessors handle the interrupts the same way. When a hardware interrupt occurs the CPU stops executing the instructions that it was executing and jumps to a location in memory which either contains the interrupt handling code or an instruction branching to the interrupt handling code. This code usually operates in a special mode for the CPU, interrupt modeand, normally, no other interrupts can occur in this mode. There are exceptions though; some CPUs rank the interrupts in priority and higher level interrupts may happen. This means the first level interrupt handling code must be very carefully written and it often has its own stack which it uses to store the CPU's execution state (all of the CPU's normal registers and context) before it goes off and fully handles the interrupt. Some CPUs have a special set of registers that only exist in interrupt mode and the interrupt code can use these registers to do most of the context saving it needs to do. When the interrupt has been handled, the CPU's state is restored and the interrupt is dismissed. The CPU will then continue to doing whatever it was doing before being interrupted. It is important that the interrupt processing code is as efficient as possible and that the operating system does not block interrupts too long.
11. In a sequential search, what is the average number of comparisons it takes to search through n elements ?
Ans: (n+1)/2.
12. What is the size of the array declared as double * X[5] ?
Ans. 5 * sizeof ( double * )
13. A binary search tree with node information as 1,2,3,4,5,6,7,8 is given. Write the result obtained on preorder traversal of the binary search tree ?
Ans : (Not sure!)
14. If size of the physical memory is 232-1, then what is the size of the virtual memory ?
15.
S -> A0B
A-> BB0
B-> AA1
How many strings of length 5 are possible with the above productions?
16. (3*4096+15*256+3*16+3). How many 1's are there in the binary representation of the result?
Ans. 10 ( 16179 = 11111100110011)
17. In memory mapped I/O how is I/O is accessed ?
Ans: uses the same address bus to address both memory and I/O devices, and the CPU instructions used to access the memory are also used for accessing devices.
18. What is the use of ALE in 8085 ?
Ans: To latch the lower byte of the address.
19. If the logical memory of 8 X 1024 is mapped into 32 frames, then the number of bits for the logical address are____ ?
Ans. 13
20. Context free grammar is useful for which purpose ?
21. In ternary number representation, numbers are represented as 0,1,-1.(Here -1 is represented as 1 bar.) How is 352/9 represented in ternary number representation?
22. There are processes which take 4,1,8,1 machine cycles respectively. If these are executed in round robin fashion with a time quantum of 1, what is the time it take for process 4 to complete ?
Ans. 9
23. The minimum frequency of operation is specified for every processor because......
a)for interfacing slow peripherals
b)dynamic memory refreshing.
c)to make compatible with other processor.
24. For linked list implementation , which search is not applicable ?
Ans: Binary search.
25. Each character is represented by 7 bits, 1 bit is used to represent error bit and another bit for parity. If total number of bits transmitted is 1200 bits, then what is the number of symbols that can be transmitted ?
Ans: 133
26. Explain set associativity of cache ?
27. Write the postfix form of the following expression . A+[[(B+C)+(D+E)*F]/G]
28. What is the function of the linker?
29. void f(int y)
{
struct s *ptr;
ptr = malloc (sizeof (struct)+99*sizeof(int));
}
struct s{
int i;
float p;
};
when free (ptr) is executed, then what will happen?
30. To concatenate two linked lists strings, the order is O(1) is obtained for what kind of list?
31. main()
{ fork();
fork();
fork();
printf("hello");
}
How many times it will print hello?
32. char A[5,6] How many bytes it requires?
33. Bridges are used in which layer?
34 .Bigendian means
a)lower byte stored in lower address
b)lower byte stored in higher address
one of these is correct.u can verify in Any micro processor book.
35 main()
{ j=0
for(i=0;i<10;i++)>
{
j+=i;
}
}
what is the value of i & j at the end of the loop
ans: 10,46
1. The starting location of an array is 1000. If the array[1..5/...4] is stored in row major order, what is the location of element [4,3]. Each word occupies 4 bytes.
Ans: 1056 (Check it out for yourself!)
2. In a tertiary tree, which has three childs for every node, if the number of internal nodes are N, then the total number of leaf nodes are?
Ans: (2N+1)
3. Explain the term "locality of reference" ?
Ans: In computer science, locality of reference, also called the principle of locality, is the term applied to situations where the same value or related storage locations are frequently accessed. There are three basic types of locality of reference: temporal, spatial and sequential:
Temporal locality -
Here a resource that is referenced at one point in time is referenced again soon afterwards.
Spatial locality -
Here the likelihood of referencing a storage location is greater if a storage location near it has been recently referenced.
Sequential locality -
Here storage is accessed sequentially, in descending or ascending order.
4. What is the language used for Artificial Intelligence
Ans: lisp
5. What is the character set used in JAVA 2.0 ?
Ans: Unicode
6. char a =0xAA ;
int b ;
b = (int) a ;
b = b >> 4 ;
printf("%x",b);
What is the output of the above
program segment ?
Ans: fffffffa
7. struct s1 { struct { struct { int x; } s2 } s3 }y;
How does one access x in the above given structure definition ?
Ans: Compilation failes as ";" is missing immediately after declaration of the strcuture variables s2 and s3.
Otherwise, we can access x like this: y.s3.s2.x
8. Why there is no recursion in Fortran ?
Ans. There is no dynamic allocation.
9. What is the worst case complexity of Quick sort?
Ans. O(n2)
10. What will be sequence of operating system activities when an interrupt occurs ?
Ans: Most modern general purpose microprocessors handle the interrupts the same way. When a hardware interrupt occurs the CPU stops executing the instructions that it was executing and jumps to a location in memory which either contains the interrupt handling code or an instruction branching to the interrupt handling code. This code usually operates in a special mode for the CPU, interrupt modeand, normally, no other interrupts can occur in this mode. There are exceptions though; some CPUs rank the interrupts in priority and higher level interrupts may happen. This means the first level interrupt handling code must be very carefully written and it often has its own stack which it uses to store the CPU's execution state (all of the CPU's normal registers and context) before it goes off and fully handles the interrupt. Some CPUs have a special set of registers that only exist in interrupt mode and the interrupt code can use these registers to do most of the context saving it needs to do. When the interrupt has been handled, the CPU's state is restored and the interrupt is dismissed. The CPU will then continue to doing whatever it was doing before being interrupted. It is important that the interrupt processing code is as efficient as possible and that the operating system does not block interrupts too long.
11. In a sequential search, what is the average number of comparisons it takes to search through n elements ?
Ans: (n+1)/2.
12. What is the size of the array declared as double * X[5] ?
Ans. 5 * sizeof ( double * )
13. A binary search tree with node information as 1,2,3,4,5,6,7,8 is given. Write the result obtained on preorder traversal of the binary search tree ?
Ans : (Not sure!)
14. If size of the physical memory is 232-1, then what is the size of the virtual memory ?
15.
S -> A0B
A-> BB0
B-> AA1
How many strings of length 5 are possible with the above productions?
16. (3*4096+15*256+3*16+3). How many 1's are there in the binary representation of the result?
Ans. 10 ( 16179 = 11111100110011)
17. In memory mapped I/O how is I/O is accessed ?
Ans: uses the same address bus to address both memory and I/O devices, and the CPU instructions used to access the memory are also used for accessing devices.
18. What is the use of ALE in 8085 ?
Ans: To latch the lower byte of the address.
19. If the logical memory of 8 X 1024 is mapped into 32 frames, then the number of bits for the logical address are____ ?
Ans. 13
20. Context free grammar is useful for which purpose ?
21. In ternary number representation, numbers are represented as 0,1,-1.(Here -1 is represented as 1 bar.) How is 352/9 represented in ternary number representation?
22. There are processes which take 4,1,8,1 machine cycles respectively. If these are executed in round robin fashion with a time quantum of 1, what is the time it take for process 4 to complete ?
Ans. 9
23. The minimum frequency of operation is specified for every processor because......
a)for interfacing slow peripherals
b)dynamic memory refreshing.
c)to make compatible with other processor.
24. For linked list implementation , which search is not applicable ?
Ans: Binary search.
25. Each character is represented by 7 bits, 1 bit is used to represent error bit and another bit for parity. If total number of bits transmitted is 1200 bits, then what is the number of symbols that can be transmitted ?
Ans: 133
26. Explain set associativity of cache ?
27. Write the postfix form of the following expression . A+[[(B+C)+(D+E)*F]/G]
28. What is the function of the linker?
29. void f(int y)
{
struct s *ptr;
ptr = malloc (sizeof (struct)+99*sizeof(int));
}
struct s{
int i;
float p;
};
when free (ptr) is executed, then what will happen?
30. To concatenate two linked lists strings, the order is O(1) is obtained for what kind of list?
31. main()
{ fork();
fork();
fork();
printf("hello");
}
How many times it will print hello?
32. char A[5,6] How many bytes it requires?
33. Bridges are used in which layer?
34 .Bigendian means
a)lower byte stored in lower address
b)lower byte stored in higher address
one of these is correct.u can verify in Any micro processor book.
35 main()
{ j=0
for(i=0;i<10;i++)>
{
j+=i;
}
}
what is the value of i & j at the end of the loop
ans: 10,46
Cisco Interview questions for Electronics Engineer
Cisco Interview questions for Electronics Engineer
1. In order to find out stack fault of a three input nand gate how many necessary input vectors are needed ?
2. What is parity generation ?
3. A nand gate becomes ___ gate when used with negative logic ?
4. What is the advantage of cmos over nmos ?
5. What is the advantage of syncronous circuits over asynchronous circuits ?
6. What is the function of ALE in 8085 ?
7. A voice signal sample is stored as one byte. Frequency range is 16 Hz to 20 Hz. What is the memorysize required to store 4 minutes voice signal?
8. What will the controller do before interrupting CPU?
9. In a normalised floating point representation, mantissa is represented using 24 bits and exponent with 8 bits using signed representation. What is range ?
10. The stack uses which policy out of the following-- LIFO, FIFO, Round Robin or none of these ?
11. Where will be the actual address of the subroutine is placed for vectored interrupts?
12. Give the equivalent Gray code reprasentation of AC2H.
13.What is the memory space required if two unsigned 8 bit numbers are multiplied ?
14. The vector address of RST 7.5 in 8085 processor is _______.
Ans. 003C (multiply 7.5 by 8 and convert to hex)
15. Subtract the following hexadecimal numbers--- 8416 - 2A16
16. Add the following BCD numbers--- 1001 and 0100
17. How much time does a serial link of 64 Kbps take to transmit a picture with 540 pixels.
18. Give the output when the input of a D-flip flop is tied to the output through the XOR gate.
19. Simplify the expression AB + A( B + C ) + B ( B + C )
20. Determine the logic gate to implement the foolowing terms--ABC, A+B+C
21. Implement the NOR gate as an inverter.
22. What is the effect of temperature on the Icb in a transistor
23. What is the bit storage capacity of a ROM with a 512*4 organisation?
24. What is the reason of the refresh operation in dynamic RAM's ?
25. Suppose that the D input of a flip flop changes from low to high in the middle of a clock pulse.Describe what happens if the flip flop is a positive edge triggered type?
26. How many flip flops are required to produce a divide by 32
device ?
27. An active HIGH input S-R latch has a 1 on the S input and a 0 on the R input. What state is the latch in?
28. Implement the logic equation Y = C^BA^ + CB^A + CBA with a multiplexer. (where C^ stands for C complement)
29.Equivalent Gray code reprasentation of AC2H.
30. What does a PLL consist of ?
1. In order to find out stack fault of a three input nand gate how many necessary input vectors are needed ?
2. What is parity generation ?
3. A nand gate becomes ___ gate when used with negative logic ?
4. What is the advantage of cmos over nmos ?
5. What is the advantage of syncronous circuits over asynchronous circuits ?
6. What is the function of ALE in 8085 ?
7. A voice signal sample is stored as one byte. Frequency range is 16 Hz to 20 Hz. What is the memorysize required to store 4 minutes voice signal?
8. What will the controller do before interrupting CPU?
9. In a normalised floating point representation, mantissa is represented using 24 bits and exponent with 8 bits using signed representation. What is range ?
10. The stack uses which policy out of the following-- LIFO, FIFO, Round Robin or none of these ?
11. Where will be the actual address of the subroutine is placed for vectored interrupts?
12. Give the equivalent Gray code reprasentation of AC2H.
13.What is the memory space required if two unsigned 8 bit numbers are multiplied ?
14. The vector address of RST 7.5 in 8085 processor is _______.
Ans. 003C (multiply 7.5 by 8 and convert to hex)
15. Subtract the following hexadecimal numbers--- 8416 - 2A16
16. Add the following BCD numbers--- 1001 and 0100
17. How much time does a serial link of 64 Kbps take to transmit a picture with 540 pixels.
18. Give the output when the input of a D-flip flop is tied to the output through the XOR gate.
19. Simplify the expression AB + A( B + C ) + B ( B + C )
20. Determine the logic gate to implement the foolowing terms--ABC, A+B+C
21. Implement the NOR gate as an inverter.
22. What is the effect of temperature on the Icb in a transistor
23. What is the bit storage capacity of a ROM with a 512*4 organisation?
24. What is the reason of the refresh operation in dynamic RAM's ?
25. Suppose that the D input of a flip flop changes from low to high in the middle of a clock pulse.Describe what happens if the flip flop is a positive edge triggered type?
26. How many flip flops are required to produce a divide by 32
device ?
27. An active HIGH input S-R latch has a 1 on the S input and a 0 on the R input. What state is the latch in?
28. Implement the logic equation Y = C^BA^ + CB^A + CBA with a multiplexer. (where C^ stands for C complement)
29.Equivalent Gray code reprasentation of AC2H.
30. What does a PLL consist of ?
Cisco Interview Questions asked,Cisco sample Interview Questions
Cisco Interview Questions asked,Cisco sample Interview Questions
1)What is Recovery Testing
Ans: In software testing, recovery testing is the activity of testing how well the software is able to recover from crashes, hardware failures and other similar problems.
2)Which layer is responsible for determining if sufficient resources for the intended communication exists?
* Application
* Network
* Session
* Presentation
* Transport
Ans:The Application layer of the OSI model is where users communicate to the computer. The Application layer is responsible for identifying and establishing the availability of the intended communication partner and determining if sufficient resources for the intended communication exist.
3)What are the 2 functions of the Data Link Mac layer?
* Handles access to shared media
* Manages protocol access to the physical network medium
* Provides SAPs for higher level protocols
* Allows multiple devices to uniquely identify one another on the data link layer
Ans: Handles access to shared media and Allows multiple devices to uniquely identify one another on the data link layer
4)Describe End to End network services: (Choose all that apply)
* Best Route selection
* Accomplished Segment by Segment, each segment is autonomous
* Flow Control & Data Integrity
* Best efforts packet delivery
Ans: Accomplished Segment by Segment, each segment is autonomous and Flow Control & Data Integrity (Not sure! Double check!)
5)Which of the following provide correct information about a protocol at the transport layer of the OSI model?
* UDP - Provides Connectionless datagrams service
* TCP - Provides Connection Oriented Services
* SMTP - Provides Mail Exchange
* IP - Route determination
* FTP - Transfers of Files
Ans: UDP - Provides Connectionless datagrams service and TCP - Provides Connection Oriented Services
6)Which layer is responsible for providing mechanisms for multiplexing upper-layer application, session establishment, and tear down of virtual circuits?
* Session
* Network
* Physical
* Transport
* Application
* Presentation
Ans: Transport Layer
7)Which of the following are logged when IP access list logging is enabled?
* source address
* protocol
* source port
* destination address
* access list number
* destination port
8)What?s the default CDP holdtime in seconds for Cisco routers?
* 30 seconds
* 180 seconds
* 90 seconds
* 60 seconds
Ans: 180 Seconds
9)Which two of the following protocols are used at the Transport layer?
* ARP
* UDP
* ICMP
* RARP
* TCP
* BootP
Ans: TCP and UDP
10)Choose three reasons why the networking industry uses a layered model:
A* It facilitates systematic troubleshooting
B* It allows changes in one layer to occur without changing other layers
C* It allows changes to occur in all layers when changing one protocol
D* It clarifies how to do it rather than what general function to be done
E* It clarifies what general function is to be done rather than how to do it
Ans: A, B, and E
11)Which layer is responsible for identifying and establishing the availability of the intended communication partner?
* Application
* Presentation
* Transport
* Session
* Network
Ans: Application
12)What is TACACS? Radius?
Ans: Terminal Access Controller Access-Control System (TACACS) is a remote authentication protocol that is used to communicate with an authentication server commonly used in UNIX networks. TACACS allows a remote access server to communicate with an authentication server in order to determine if the user has access to the network.
RADIUS: Remote Authentication Dial In User Service (RADIUS) is an AAA (authentication, authorization, and accounting) protocol for controlling access to network resources. RADIUS is commonly used by ISPs and corporations managing access to Internet or internal networks across an array of access technologies including modem, DSL, wireless and VPNs.
13)What is flow or netflow?
Ans: NetFlow is an open but proprietary network protocol developed by Cisco Systems to run on Cisco IOS-enabled equipment for collecting IP traffic information.
14)What is SPAN or RSPAN?
Ans: Switched Port Analyzer. Remote Switched Port Analyzer. You can monitor traffic flowing to a port from another port.
15)What is VMPS?
Ans: The VLAN Membership Policy Server ( VMPS ) makes it possible to use a client/server architecture to manage dynamic VLAN based on the MAC addresses.
When someone connects to a port, the client switch connects it to server VMPS to know if this MAC address can be connected to this port.
1)What is Recovery Testing
Ans: In software testing, recovery testing is the activity of testing how well the software is able to recover from crashes, hardware failures and other similar problems.
2)Which layer is responsible for determining if sufficient resources for the intended communication exists?
* Application
* Network
* Session
* Presentation
* Transport
Ans:The Application layer of the OSI model is where users communicate to the computer. The Application layer is responsible for identifying and establishing the availability of the intended communication partner and determining if sufficient resources for the intended communication exist.
3)What are the 2 functions of the Data Link Mac layer?
* Handles access to shared media
* Manages protocol access to the physical network medium
* Provides SAPs for higher level protocols
* Allows multiple devices to uniquely identify one another on the data link layer
Ans: Handles access to shared media and Allows multiple devices to uniquely identify one another on the data link layer
4)Describe End to End network services: (Choose all that apply)
* Best Route selection
* Accomplished Segment by Segment, each segment is autonomous
* Flow Control & Data Integrity
* Best efforts packet delivery
Ans: Accomplished Segment by Segment, each segment is autonomous and Flow Control & Data Integrity (Not sure! Double check!)
5)Which of the following provide correct information about a protocol at the transport layer of the OSI model?
* UDP - Provides Connectionless datagrams service
* TCP - Provides Connection Oriented Services
* SMTP - Provides Mail Exchange
* IP - Route determination
* FTP - Transfers of Files
Ans: UDP - Provides Connectionless datagrams service and TCP - Provides Connection Oriented Services
6)Which layer is responsible for providing mechanisms for multiplexing upper-layer application, session establishment, and tear down of virtual circuits?
* Session
* Network
* Physical
* Transport
* Application
* Presentation
Ans: Transport Layer
7)Which of the following are logged when IP access list logging is enabled?
* source address
* protocol
* source port
* destination address
* access list number
* destination port
8)What?s the default CDP holdtime in seconds for Cisco routers?
* 30 seconds
* 180 seconds
* 90 seconds
* 60 seconds
Ans: 180 Seconds
9)Which two of the following protocols are used at the Transport layer?
* ARP
* UDP
* ICMP
* RARP
* TCP
* BootP
Ans: TCP and UDP
10)Choose three reasons why the networking industry uses a layered model:
A* It facilitates systematic troubleshooting
B* It allows changes in one layer to occur without changing other layers
C* It allows changes to occur in all layers when changing one protocol
D* It clarifies how to do it rather than what general function to be done
E* It clarifies what general function is to be done rather than how to do it
Ans: A, B, and E
11)Which layer is responsible for identifying and establishing the availability of the intended communication partner?
* Application
* Presentation
* Transport
* Session
* Network
Ans: Application
12)What is TACACS? Radius?
Ans: Terminal Access Controller Access-Control System (TACACS) is a remote authentication protocol that is used to communicate with an authentication server commonly used in UNIX networks. TACACS allows a remote access server to communicate with an authentication server in order to determine if the user has access to the network.
RADIUS: Remote Authentication Dial In User Service (RADIUS) is an AAA (authentication, authorization, and accounting) protocol for controlling access to network resources. RADIUS is commonly used by ISPs and corporations managing access to Internet or internal networks across an array of access technologies including modem, DSL, wireless and VPNs.
13)What is flow or netflow?
Ans: NetFlow is an open but proprietary network protocol developed by Cisco Systems to run on Cisco IOS-enabled equipment for collecting IP traffic information.
14)What is SPAN or RSPAN?
Ans: Switched Port Analyzer. Remote Switched Port Analyzer. You can monitor traffic flowing to a port from another port.
15)What is VMPS?
Ans: The VLAN Membership Policy Server ( VMPS ) makes it possible to use a client/server architecture to manage dynamic VLAN based on the MAC addresses.
When someone connects to a port, the client switch connects it to server VMPS to know if this MAC address can be connected to this port.
Cisco Network Interview Questions-Technical interview questions Cisco
Cisco Network Interview Questions-Technical interview questions Cisco
1. What is a wildcard mask, and how is it different from a netmask?
2. How do you configure a Cisco switch or router? What are the steps needed?
3. How would I place an interface into trunking mode?
4. How do you shutdown an interface on a router or switch?
5. What is VTP?
6. What is VMPS?
7. What is SPAN/RSPAN?
8. What is flow/netflow?
9. What is TACACS? Radius?
1. What is a wildcard mask, and how is it different from a netmask?
2. How do you configure a Cisco switch or router? What are the steps needed?
3. How would I place an interface into trunking mode?
4. How do you shutdown an interface on a router or switch?
5. What is VTP?
6. What is VMPS?
7. What is SPAN/RSPAN?
8. What is flow/netflow?
9. What is TACACS? Radius?
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