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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.

Popular Latest Rated
Q:

Which layer of the OSI model offers three different modes of communication : Simplex, half duplex, and full duplex?

A) Presentation B) Transport
C) Application D) Session
 
Answer & Explanation Answer: D) Session

Explanation:

The Session layer of the OSI model offers three different modes of communication : Simplex, half duplex, and full duplex.

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Filed Under: CCNA - CISCO Certification

0 7328
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 7208
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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Subject: CCNA - CISCO Certification

0 6993
Q:

How many bits are in an IPv6 address field?

A) 24 B) 16
C) 32 D) 128
 
Answer & Explanation Answer: B) 16

Explanation:

There are 16 bits (four hex characters) in an IPv6 field.

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Filed Under: CCNA - CISCO Certification

0 6985
Q:

The network with ip address 192.168.100.0/27 is to be used on a router. If ip subnet-zero is configured, which statement describe the resulting number of available subnets and hosts?

A) 7 usable subnets, each with 32 host addresses B) 8 usable subnets, each with 30 host addresses
C) 8 usable subnets, each with 27 host addresses D) 7 usable subnets, each with 24 host addresses
 
Answer & Explanation Answer: B) 8 usable subnets, each with 30 host addresses

Explanation:

Because subnet zero is configured and we have a class C address (192.168.100.0) then the network portion will have 3 bits so 8 subnets will be available. The rest of the bits, 5, represent the available hosts, so 2^5=32, but only 30 are available, 0 ad 31 are network and broadcast respectively.

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Filed Under: CCENT - CISCO Certification

6 6926
Q:

To enable OSPFv3, which of the following would you use?

A) Router1 (config - if) # ipv6 ospf 10 area 0.0.0.0 B) Router1 (config - if) # ipv6 router rip 1
C) Router1 (config - if) # ipv6 router eigrp 10 D) Router1 (config - if) # ospf ipv6 10 area 0
 
Answer & Explanation Answer: A) Router1 (config - if) # ipv6 ospf 10 area 0.0.0.0

Explanation:

To enable OSPFv3, you enable the protocol at the interface level as with RIPng. The command string is ipv6 ospf proces-id area area-id.

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Filed Under: CCNA - CISCO Certification

0 6842
Q:

To use VLSM, what capability must the routing protocols in use possess?

A) Support for multicast B) Multi-protocol support
C) Transmission of subnet mask information D) Support for unequal load balancing
 
Answer & Explanation Answer: C) Transmission of subnet mask information

Explanation:

To use VLSM, the routing protocols in use possess the capability to transmit subnet mask information.

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Filed Under: CCNA - CISCO Certification

0 6754
Q:

Which layer defines how data is formatted , presented, encoded, and converted for use on the network?

Answer

The presentation layer makes sure that data is in a readable format for the Application layer.

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Subject: CCNA - CISCO Certification

11 6710