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A comprehensive study guide or practice exam for the cisco certified network associate (ccna) 1 course. It covers a wide range of networking concepts and technologies, including ip addressing, routing, switching, protocols, and troubleshooting. Detailed explanations and correct answers to numerous multiple-choice questions, making it a valuable resource for students preparing for the ccna 1 exam. The questions cover fundamental networking principles, such as the osi model, mac and ip addressing, arp, dhcp, dns, and router configuration. Additionally, the document addresses more advanced topics like subnet calculation, access control lists, and terminal emulation software. Overall, this document could be extremely useful for university students enrolled in ccna-related courses, as well as network professionals seeking to validate their ccna 1 knowledge.
Typology: Exams
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Which of the following are the address ranges of the private IP addresses? (Choose three.) - Correct Answer-10.0.0.0 to 10.255.255.255 ; 172.16.0.0 to 172.31.255.255; 192.168.0.0 to 192.168.255. Which two functions of the OSI model occur at layer two? (Choose two.) - Correct Answer-physical addressing ; media access control Refer to the exhibit. What function does router RT_A need to provide to allow Internet access for hosts in this network? - Correct Answer-address translation What is true regarding network layer addressing? (Choose three.) - Correct Answer-It uses a hierarchical structure.; uniquely identifies each host; A portion of the address is used to identify the network. Refer to the exhibit. Host A attempts to establish a TCP/IP session with host C. During this attempt, a frame was captured with the source MAC address 0050.7320.D632 and the destination MAC address 0030.8517.44C4. The packet inside the captured frame has an IP source address 192.168.7.5, and the destination IP address is 192.168.219.24. At which point in the network was this packet captured? - Correct Answer-Leaving Dallas Refer to the exhibit. Assume all devices are using default configurations. How many subnets are required to address the topology that is shown? - Correct Answer- A technician is asked to secure the privileged EXEC mode of a switch by requiring a password. Which type of password would require this login and be considered the most secure? - Correct Answer-enable secret Refer to the exhibit. A technician is working on a network problem that requires verification of the router LAN interface. What address should be pinged from this host to confirm that the router interface is operational? - Correct Answer-192.168.254. Which OSI layer does IP rely on to determine whether packets have been lost and to request retransmission? - Correct Answer-transport When connectionless protocols are implemented at the lower layers of the OSI model, what is usually used to acknowledge that the data was received and to request the
retransmission of missing data? - Correct Answer-an upper-layer, connection-oriented protocol or service Refer to the exhibit. Host C is able to ping 127.0.0.1 successfully, but is unable to communicate with hosts A and B in the organization. What is the likely cause of the problem? - Correct Answer-The subnet mask on host C is improperly configured. Refer to the exhibit. Which list refers only to end devices? - Correct Answer-D,E,F,G Refer to the exhibit. Host A sends a frame with the destination MAC address as FFFF.FFFF.FFFF. What action will the switch take for this frame? - Correct Answer-It will send the frame to all hosts except host A. Which subnet mask will allow 2040 hosts per subnet on the IP network 10.0.0.0? - Correct Answer-255.255.248. Refer to the exhibit. RouterB is configured properly. The Ethernet interface Fa0/0 of RouterA is configured with the use of the commands that are shown. However, a ping from the Fa0/0 interface of RouterA to the Fa0/0 interface of RouterB is unsuccessful. What action should be taken on RouterA to solve this problem? - Correct Answer-Use the no shutdown command on the FastEthernet interface Fa0/0. To send data through a network, what two flags are used to establish a session? (Choose two.) - Correct Answer-ACK; SYN Which statement is true about the TTL value of an IPv4 packet? - Correct Answer-It specifies the remaining "life" of the packet. Refer to the exhibit. Communication for hosts X and Y is restricted to the local network. What is the reason for this? - Correct Answer-The gateway addresses are broadcast addresses. What type of network is maintained if a server takes no dedicated role in the network? - Correct Answer-peer-to-peer A routing issue has occurred in your internetwork. Which of the following type of devices should be examined to isolate this error? - Correct Answer-Router Which physical component is used to access and perform the initial configuration on a new unconfigured router? - Correct Answer-Image 2, CONSOLE A user sees the command prompt: Router(config-if)#. What task can be performed at this mode? - Correct Answer-Configure individual interfaces.
What is the correct order for PDU encapsulation? - Correct Answer-Frame Header, Network Header, Transport Header, Data, Frame Trailer What information can be gathered by using the command netstat? - Correct Answer- active TCP connections How can ARP be used to help document the network? - Correct Answer-It can provide a list of physical addresses on the network. What is the protocol data unit that is associated with the data link layer of the OSI reference model? - Correct Answer-Frame Which application layer protocol allows administrators to log into a server from remote locations and control a server as though logged in locally? - Correct Answer-Telnet Which statement identifies the DNS protocol? - Correct Answer-It matches a resource name with the required network address. Which password would allow a user to establish a Telnet session with a Cisco device? - Correct Answer-VTY password Which identifier is contained in the header of the Layer 2 Ethernet frame? - Correct Answer-physical source and destination addresses What happens when a node on an Ethernet network is creating a frame and it does not have the destination MAC address? - Correct Answer-The node sends out an ARP request with the destination IP address. An administrator makes changes to the default configuration of a router and saves them to NVRAM. After testing, it is discovered that the configurations did not have the desired effect and must be removed. What steps must be taken to remove the changes and return the router to the default configuration? - Correct Answer-Issue the erase startup- config command, and then reboot the router. A network administrator is tasked with connecting two workgroups that are configured to use different subnets. Which device should be selected to allow connectivity between users on the two networks? - Correct Answer-Router Which two programs can be used to accomplish terminal emulation for configuring a router from the CLI through the console port? (Choose two.) - Correct Answer- HyperTerminal; Minicom Which statement accurately describes file sharing in a peer-to-peer network? - Correct Answer-Access control is decentralized.
What are two primary responsibilities of the Ethernet MAC sublayer? (Choose two.) - Correct Answer-data encapsulation; accessing the media Which router configuration mode would an administrator use to configure the router for SSH or Telnet login access? - Correct Answer-Line Refer to the exhibit. Which device should be included in the network topology to provide Layer 2 connectivity for all LAN devices, provide multiple collision domains, and also provide a connection to the rest of the network? - Correct Answer-Switch Refer to the exhibit. A technician has been asked to test connectivity from PC1 to a remote network. Which action will indicate if there is remote connectivity? - Correct Answer-C:>ping 172.16.4. What purpose does a hostname serve on a router? - Correct Answer-provides device identification to users logging on remotely Which prompt is associated with the privileged exec mode? - Correct Answer-R1# A technician wishes to connect two computers to move data from one to the other before reloading the operating system. The NICs on both PCs do not support autosensing feature. Which procedure will satisfy the requirement? - Correct Answer- Interconnect the two PCs with a crossover cable. Refer to the exhibit. Interface Fa0/0 on router A is generating excessive broadcast traffic. Which LAN segments will affected by the excessive broadcasts? - Correct Answer-Only the 192.168.1.200/30 network will be affected. Two routers are connected via their serial ports in a lab environment. The routers are configured with valid IP addresses, but they cannot ping each other. The show interface serial0/0 command shows that the serial0/0 interface is up but the line protocol is down. What could be the cause of this problem? - Correct Answer-The clock rate command has not been entered on the DCE interface. Refer to the exhibit. Which layered network model is shown in the diagram? - Correct Answer-TCP/IP Refer to the exhibit. Host A is unable to reach host B on the remote network. A technician attempted to ping the local gateway and the ping was successful. To verify the host configuration, the technician issued the ipconfig command. What is the likely cause of the problem? - Correct Answer-The default gateway on host A is incorrectly configured. Which option shows how a router will route packets to a remote network? - Correct Answer-Image 4
An organization has been assigned network ID 10.10.128.0 and subnet mask 255.255.224.0. Which IP address range can be used for this organization? - Correct Answer-10.10.128.0 to 10.10.159. A network administrator is configuring several switches for a network. The switches have similar configurations and only minor differences. The administrator wants to save all commands that are issued on the first switch to a text file for editing. Which transfer option should be selected in HyperTerminal? - Correct Answer-Capture Text When must a router serial interface be configured with the clock rate command? - Correct Answer-when the interface is functioning as a DCE device Due to a security violation, the router passwords must be changed. What information can be learned from the following configuration entries? (Choose two.) - Correct Answer-The entries specify four Telnet lines for remote access; Access will be permitted for Telnet using "c13c0″ as the password Which password is automatically encrypted when it is created? - Correct Answer-Enable secret Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A? - Correct Answer-IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100. Which prompt represents the appropriate mode used for the copy running-config startup-config command? - Correct Answer-Switch-6J# Refer to the exhibit. The tracert command is initiated from PC1 to PC4. Which device will send a response to the initial tracert packet from PC1? - Correct Answer-London Which information is used by the router to determine the path between the source and destination hosts? - Correct Answer-the network portion of the IP address Refer to the exhibit. A PC is communicating with another PC on a remote network. The two networks are connected by three routers. Which action will help to identify the path between the hosts? - Correct Answer-Use the tracert command at the host. Refer to the exhibit. The diagram represents the process of sending e-mail between clients. Which list correctly identifies the component or protocol used at each numbered stage of the diagram? - Correct Answer-MUA 2.SMTP 3.MTA 4.SMTP 5.MTA 6.MDA 7.POP 8.MUA Refer to the exhibit. The router of the company failed and was replaced. After the replacement, hosts C and D in the Education office are able to ping each other, but they
are unable to access the hosts in the Accounts office. What is the likely cause of the problem? - Correct Answer-The subnet mask at the fa0/1 interface of the router is incorrectly entered. Refer to the exhibit. Host A and B are unable to communicate with each other. What is the reason for this? - Correct Answer-The gateway addresses are network addresses. Refer to the exhibit. Host B attempts to establish a TCP/IP session with host C. During this attempt, a frame was captured at the FastEthernet interface fa0/1 of the San Francisco router. The packet inside the captured frame has the source IP address 10.10.1.2, and the destination IP address is 10.31.1.20. What is the destination MAC address of the frame at the time of capture? - Correct Answer-0060.7320.D Refer to the exhibit. While configuring a network, a technician wired each end of a Category 5e cable as shown. Which two statements are true about this setup? (Choose two.) - Correct Answer-The cable is suitable for connecting a switch to a router Ethernet port; The cable is suitable for connecting dissimilar types of devices. Well-known services and applications use which range of TCP/UDP port numbers? - Correct Answer-0 to 1023 Which three IPv4 addresses represent subnet broadcast addresses? (Choose three.) - Correct Answer-192.168.4.63 /26; 192.168.4.191 /26; 192.168.4.95 / Which OSI layer addressing is required to route packets between two networks? - Correct Answer-Layer 3 Refer to the exhibit. Host A is requesting a web page from the web server. Which option represents the socket to which the request is made? - Correct Answer-10.0.0.130: Which statement describes the correct use of addresses to deliver an e-mail message from HostB to the e-mail service that is running on ServerA? - Correct Answer-Router B uses a Layer 3 network address to route the packet. Refer to the exhibit. Host A is configured with the correct IP address for the default gateway of the router R1 FastEthernet0/1 interface. How will a packet that is sent from host A to host B be handled by the devices on the network? - Correct Answer-R1 will forward the packet to its default gateway, the next hop router R2. R2 will forward the packet to the directly connected network 10.1.1.0/24. Which option correctly identifies the interface or interfaces used to connect the router to a CSU/DSU for WAN connectivity? - Correct Answer-Image 4 SERIAL 1; SERIAL 0
How many host addresses may be assigned when using the 128.107.0.0 network address with a subnet mask of 255.255.248.0? - Correct Answer- During the encapsulation process, what is the PDU of the internet layer? - Correct Answer-Packet Which service is used when the nslookup command is issued on a computer? - Correct Answer-DNS Refer to the exhibit. A network technician creates equal-sized subnets of network 192.168.2.0/24 using the subnet mask 255.255.255.224. If the technician wishes to calculate the number of host addresses in each subnet by using the formula that is shown in the exhibit, what value will be used for n? - Correct Answer- What are the default terminal emulation software settings when configuring a Cisco device through a console port? - Correct Answer-Bits per second: 9600 Data bits: 8 Parity: None Stop bits: 1 Flow control: None In a packet-switched data network, what is used to reassemble the packets in the correct order at the destination device? - Correct Answer-Sequence number Refer to the exhibit. A network administrator tries to test the connectivity between routers R1 and R2, but the attempt to ping is unsuccessful. Based on the show ip interface brief command outputs, what could be the possible cause of the problem? - Correct Answer-Interface S0/0/0 on router R1 is configured with an incorrect IP address. Which router configuration mode will require user authentication if an administrator issues the enable secret command? - Correct Answer-Privileged executive mode Which location of router memory is cleared with the erase startup-config command? - Correct Answer-NVRAM Which subnet mask should be used for a Class B network that is divided into subnets and will accommodate between 800 hosts and 1000 hosts? - Correct Answer- 255.255.252. Refer to the exhibit. The network containing router B is experiencing problems. A network associate has isolated the issue in this network to router B. What action can be preformed to correct the network issue? - Correct Answer-issue the no shutdown command on interface FastEthernet 0/ Refer to the exhibit. A web browser running on host PC1 sends a request for a web page to the web server with an IP address 192.168.1.254/24. What sequence of steps
will follow in order to establish the session before data can be exchanged? - Correct Answer-The session will be initiated using TCP. A three-way handshake must be successfully completed before the session is established. What is the effect of using the Router# copy running-config startup-config command on a router? - Correct Answer-The contents of NVRAM will change. Which option represents a point-to-point logical topology diagram? - Correct Answer- Last image In a network design project, a network designer needs to select a device to provide collision free connections to 40 hosts on the LAN. Which device should be selected? - Correct Answer-Switch Which communication tool allows real-time collaboration? - Correct Answer-instant messaging