CCNA EXAM QUESTIONS WITH 100% CORRECT ANSWERS 2025 LATEST UPDATE

CCNA EXAM QUESTIONS WITH 100% CORRECT ANSWERS 2025 LATEST UPDATE What IPv4 header field identifies the upper layer protocol carried in the packet? - Answer-Protocol Which statement describes a feature of the IP protocol? - Answer-IP relies on upper layer services to handle situations of missing or out-of-order packets. What routing table entry has a next hop address associated with a destination network? - Answer-remote routes Why is NAT not needed in IPv6? - Answer-Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large. A computer can access devices on the same network but cannot access devices on other networks. What is the probable cause of this problem? - Answer-The computer has an invalid default gateway address. What are two potential network problems that can result from ARP operation? (Choose two.) - Answer-On large networks with low bandwidth, multiple ARP broadcasts could cause data communication delays. Network attackers could manipulate MAC address and IP address mappings in ARP messages with the intent of intercepting network traffic. What is the effect of using the Router# copy running-config startup-config command on a router - Answer-The contents of NVRAM will change What will happen if the default gateway address is incorrectly configured on a host? - Answer-The host cannot communicate with hosts in other networks. What term describes a network owned by one organization that provides safe and secure access to individuals who work for a different organization? - Answer-Extranet At which layer of the OSI model would a LOGICAL address be added during encapsulation? - Answer-Network Layer At which OSI layer is a SOURCE IP address added to a PDU during the encapsulation process? - Answer-Application Layer What type of network traffic requires QoS? - Answer-Video Conferencing What two criteria are used to help select network media? (Choose two.) - Answer-the distance the selected medium can successfully carry a signal the environment where the selected medium is to be installed An employee at a branch office is creating a quote for a customer. In order to do this, the employee needs to access confidential pricing information from internal servers at the Head Office. What type of network would the employee access? - Answer-Intranet Which command or key combination allows a user to return to the previous level in the command hierarchy? - Answer-exit How is SSH different from telnet? - Answer-SSH provides security to remote sessions by encrypting messages and using user authentication. Telnet is considered insecure and send messages in plain text What command will prevent all unencrypted passwords from displaying in plain text in a configuration file? - Answer-(config)#service-password-encryption user EXEC mode - Answer-limited number of basic monitoring commands the first entrance into the CLI of an IOS device Privileged EXEC Mode - Answer-accessed by entering the enable command identified by a prompt ending with the # character Global Configuration Mode - Answer-changes made affect the operation of the device as a whole accessed by entering the configure terminal command While trying to solve a network issue, a technician made multiple changes to the current router configuration file. The changes did not solve the problem and were not saved. What action can the technician take to discard the changes and work with the file in NVRAM? - Answer-Issue the reload command without saving the running configuration What OSI physical layer term describes the physical medium which uses electrical pulses? - Answer-Copper Cable What are two actions performed by a Cisco switch? - Answer-using the source MAC addresses of frames to build and maintain a MAC address table utilizing the MAC address table to forward frames via the destination MAC address What is the auto-MDIX feature? - Answer-It enables a device to automatically configure an interface to use a straight-through or a crossover cable.* Which is a multicast MAC address? - Answer-01-00-5E-00-00-03 A network administrator is connecting two modern switches using a straight-through cable. The switches are new and have never been configured. Which three statements are correct about the final result of the connection? - Answer-The link between the switches will work at the fastest speed that is supported by both switches. The link between switches will work as full-duplex. The auto-MDIX feature will configure the interfaces eliminating the need for a crossover cable.* What is the auto-MDIX feature on a switch? - Answer-the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection Which switching method has the lowest level of latency? - Answer-fast-forward what is one advantage of using the cut-through switching method instead of the store-and-forward switching method? - Answer-has a lower latency appropriate for high-performance computing applications A Layer 2 switch is used to switch incoming frames from a 1000BASE-T port to a port connected to a 100Base-T network. Which method of memory buffering would work best for this task? - Answer-shared memory buffering Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame? - Answer-store-and-forward switching Which advantage does the store-and-forward switching method have compared with the cut-through switching method? - Answer-frame error checking