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Download studying for final, looking forward to a successful career in related field and more Exams Biophysics in PDF only on Docsity! Vendor: Cisco Exam Code: 100-105 Exam Name: Interconnecting Cisco Networking Devices Part 1 (ICND1) Version: DEMO ★ Instant Download ★ PDF And VCE ★ 100% Passing Guarantee ★ 100% Money Back Guarantee Get Latest & Actual 100-105 Exam's Question and Answers from Lead2pass. http://www.lead2pass.com 2 QUESTION 1 Hotspot Question - RIPv2 Troubleshooting II R1 router clock is synchronized with ISP router R2 is supposed to receive NTP updates from R1. But you observe that R2 clock is not synchronized with R1. What is the reason R2 is not receiving NTP updates from R1? A. The IP address that is used in the NTP configuration on R2 router is incorrect. B. The NTP server command not configured on R2 router. C. R2 router Ethernet interface that is connected to R1 is placed in shutdown condition. D. R1 router Ethernet interface that is connected to R2 is placed in shutdown condition. Answer: A Explanation: Check the below configuration for this QUESTION 2 Which table displays the MAC addresses that are learned on a switch? A. FIB B. ARP C. TCAM D. CAM Answer: D Explanation: The table is built by recording the source address and inbound port of all frames. As frames arrive on switch ports, the source MAC addresses are learned and recorded in the CAM table. The port of arrival and the VLAN are both recorded in the table, along with a timestamp. If a MAC address ★ Instant Download ★ PDF And VCE ★ 100% Passing Guarantee ★ 100% Money Back Guarantee Get Latest & Actual 100-105 Exam's Question and Answers from Lead2pass. http://www.lead2pass.com 5 E. The destination host receives an echo request from the source host and the source host receives an echo reply from the destination host within two seconds. Answer: D QUESTION 8 Which two statements describe the operation of the CSMA/CD access method? (Choose two.) A. In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously. B. In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting. C. The use of hubs to enlarge the size of collision domains is one way to improve the operation of the CSMA/CD access method. D. After a collision, the station that detected the collision has first priority to resend the lost data. E. After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data. F. After a collision, all stations involved run an identical backoff algorithm and then synchronize with each other prior to transmitting data. Answer: BE Explanation: Ethernet networking uses Carrier Sense Multiple Access with Collision Detect (CSMA/CD), a protocol that helps devices share the bandwidth evenly without having two devices transmit at the same time on the network medium. CSMA/CD was created to overcome the problem of those collisions that occur when packets are transmitted simultaneously from different nodes. And trust me, good collision management is crucial, because when a node transmits in a CSMA/CD network, all the other nodes on the network receive and examine that transmission. Only bridges and routers can effectively prevent a transmission from propagating throughout the entire network! So, how does the CSMA/CD protocol work? Like this: when a host wants to transmit over the network, it first checks for the presence of a digital signal on the wire. If all is clear (no other host is transmitting), the host will then proceed with its transmission. But it doesn't stop there. The transmitting host constantly monitors the wire to make sure no other hosts begin transmitting. If the host detects another signal on the wire, it sends out an extended jam signal that causes all nodes on the segment to stop sending data (think, busy signal). The nodes respond to that jam signal by waiting a while before attempting to transmit again. Backoff algorithms determine when the colliding stations can retransmit. If collisions keep occurring after 15 tries, the nodes attempting to transmit will then time out. QUESTION 9 What are two common TCP applications? (Choose two.) A. TFTP B. SMTP C. SNMP D. FTP E. DNS Answer: BD Explanation: SMTP uses TCP port 25, while FTP uses TCP ports 20 and 21. http://pentestlab.wordpress.com/2012/03/05/common-tcpip-ports/ ★ Instant Download ★ PDF And VCE ★ 100% Passing Guarantee ★ 100% Money Back Guarantee Get Latest & Actual 100-105 Exam's Question and Answers from Lead2pass. http://www.lead2pass.com 6 QUESTION 10 Refer to the exhibit. SwitchA receives the frame with the addressing shown in the exhibit. According to the command output also shown in the exhibit, how will SwitchA handle this frame? A. It will drop the frame. B. It will forward the frame out port Fa0/6 only. C. It will forward the frame out port Fa0/3 only. D. It will flood the frame out all ports. E. It will flood the frame out all ports except Fa0/3. Answer: E Explanation: When frame receives the frame, it checks the source address on MAC table if MAC address found in MAC table it tries to forward if not in MAC table adds the Address on MAC table. After checking the source address, it checks the destination address on MAC table, if MAC address found on MAC table it forwards to proper ports otherwise floods on all ports except the source port. QUESTION 12 Which OSI layer header contains the address of a destination host that is on another network? A. application B. session C. transport D. network E. data link F. physical Answer: D Explanation: Only network address contains this information. To transmit the packets the sender uses network address and datalink address. But the layer 2 address represents just the address of the next hop ★ Instant Download ★ PDF And VCE ★ 100% Passing Guarantee ★ 100% Money Back Guarantee Get Latest & Actual 100-105 Exam's Question and Answers from Lead2pass. http://www.lead2pass.com 7 device on the way to the sender. It is changed on each hop. Network address remains the same. QUESTION 13 Refer to the exhibit. A network device needs to be installed in the place of the icon labeled Network Device to accommodate a leased line attachment to the Internet. Which network device and interface configuration meets the minimum requirements for this installation? A. a router with two Ethernet interfaces B. a switch with two Ethernet interfaces C. a router with one Ethernet and one serial interface D. a switch with one Ethernet and one serial interface E. a router with one Ethernet and one modem interface Answer: C Explanation: Only a router can terminate a leased line attachment access circuit, and only a router can connect two different IP networks. Here, we will need a router with two interfaces, one serial connection for the line attachment and one Ethernet interface to connect to the switch on the LAN. QUESTION 14 Which command displays the number of times that an individual router translated an inside address to an outside address? A. show ip protocol 0 B. show ip nat translation C. show counters D. show ip route E. show ip nat statistics Answer: D