CISCO Certification Questions


What is CISCO CERTIFICATION ?

Cisco Certification is an IT Professional certification program for Cisco products taken by Networking Professionals. CISCO provides Cisco career certifications at five levels: Entry, Associate, Professional, Expert, and Architect levels. CCENT, CCNA and CCNP are the popular certifications in Cisco at different levels. IT professionals aiming for CISCO certifications should have strong knowledge on the fundamentals of the networking concepts, advanced concepts.

 

CCENT is an entry level certification - CCENT certification covers the following topics: operations of data networks, switched networks, IP addressing scheme and IP services to meet network requirements. Implementing a small routed network, identifying security threats, WAN tasks and more.

 

CCNA is an associate level certification - CCNA certification covers topics as Internetworking basics and models, OSI reference models, Ethernet, Data Encapsulation, TCP/IP, IP addresses, Sub netting basics, backing up and Cisco IOS and configuration, Routing basics, switching services, VLAN basics and memberships, IPv6 addressing and Routing protocols, Virtual private networks and more.

 

CCNP is a professional level certification - CCNP certification covers the following topics in the syllabus: Implementing a multi-area OSPF Network, eBGP based solution, IPv6 based solution, IPv4 or IPv6 based redistribution solution, Layer3 Path Control Solution, Security Extension of layer 2, Switch based layer 3 services, Infrastructure to support advanced services, Troubleshoot Multi Protocol system networks, Maintain and monitor network performance and more.

 

We have a large database of sample questions on 'Cisco certifications' that are frequently asked in the certification exam for your practice.


Q:

How should a router that is being used in a Frame Relay  network be configured to keep split horizon issues from preventing routing updates

A) Configure a seperate subinterface for each PVC with a unique DLCI and subnet assigned to the subinterface B) Combine multiple Frame Relay circuits as a point-to-point line to support multicast and broadcast traffic
C) Configure many subinterfaces in the same subnet D) Configure a single subinterface to establish multiple PVC connections to multiple remote router interfaces.
 
Answer & Explanation Answer: A) Configure a seperate subinterface for each PVC with a unique DLCI and subnet assigned to the subinterface

Explanation:

If you have a serial port configured with multiple DLCIs connected to multiple remote sites, split horizon rules stop route updates received on an interface from being sent out the same interface. By creating subinterfaces for each PVC, you can avoid the split horizon issues when using Frame Relay.

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Filed Under: CCNA - CISCO Certification

2 7188
Q:

Which of the following describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols?

A) HDLC B) Cable
C) VPN D) IPSec
 
Answer & Explanation Answer: C) VPN

Explanation:

A VPN allows or describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols. A VPN can be set up across any type of link.

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Filed Under: CCNA - CISCO Certification

2 7151
Q:

What protocol would you use if you were running xDSL and needed authentication?

Answer

PPPoE  or  PPPoA

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4 6775
Q:

Which of the following descriptions about IPv6 is correct?

A) Addresses are not hierarchical and are assigned at random B) Broadcasts have been eliminated and replaced with multicasts
C) There are 2.7 billion addresses D) An interface can only be configured with one IPv6 address
 
Answer & Explanation Answer: B) Broadcasts have been eliminated and replaced with multicasts

Explanation:

There are no broadcasts with IPv6. Unicast , multicast, anycast, global, and link - local unicast are used.

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Filed Under: CCNA - CISCO Certification

1 6646
Q:

The router address 192.168.10.250 is the default gateway for both the Web Server 2 and Host 1. What is the correct subnet mask for this network?

A. 255.255.255.0
B. 255.255.255.192
C. 255.255.255.250
D. 255.255.255.252

Answer

Answer : A

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0 6601
Q:

What is the subnetwork address for a host with the IP address 200.10.5.68/28?

A) 200.10.5.56 B) 200.10.5.32
C) 200.10.5.64 D) 200.10.5.0
 
Answer & Explanation Answer: C) 200.10.5.64

Explanation:

This is a pretty simple question. A/28 is 255.255.255.240, which means that our block size is 16 in the fourth octent. 0,16, 32, 48, 64, 80, etc. The host is in the 64 subnet.

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Filed Under: CCNA - CISCO Certification

1 6596
Q:

A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?

A) Send a different source port number B) Restart the virtual circuit
C) Decrease the sequence number D) Decrease the window size
 
Answer & Explanation Answer: D) Decrease the window size

Explanation:

A receiving host can control the transmitter by using flow control ( TCP uses windowing by default). By decreasing the window size, the receiving host can slow down the transmitting host so the receiving host does  not overflow its buffers.

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Filed Under: CCNA - CISCO Certification

0 6558
Q:

You have the following binary number :10110111. What are the decimal and hexadecimal equivalents?

A) 69/0x2102 B) 183/B7
C) 173/A6 D) 83/0xC5
 
Answer & Explanation Answer: B) 183/B7

Explanation:

You must be able to take a binary number and convert it into both decimal and hexadecimal. To convert to decimal, just add up the 1s using their values. The values that are turned on with the binary number of 10110111 are 128+32+16+4+2+1=183. To get the hexadecimal equivalent, you need to break the eight binary digits into nibbles (4 bits), 1011 and 0111. By adding up these values, you get 11 and 7. In hexadecimal, 11 is B, so the answer is 0xB7.

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Filed Under: CCNA - CISCO Certification

1 6508