Certification Questions

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

Practice CCNA – Which of the following is an industry-wide standards suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer3 Network layer of the OSI model?

Practice CCNA – What is the most common attack on a network today?

Practice CCNA – An administrator issues the command “ping 127.0.0.1” from the command line prompt on a PC host named PC1. If an ICMP reply is received, what does this confirm?

Practice CCNA – Your company wants to reconfigure a Catalyst 2950. Which actions must be taken to erase the old configuration?(Choose three)

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

Practice CCNA – Which OSI layer defines the standards for cabling and connectors?

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

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

Practice CCNA – How many bits are in an IPv6 address field?

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

Practice CCNA – 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?

Practice CCNA – 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?

Practice CCNA – Which of the following descriptions about IPv6 is correct?

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