Cisco Certifications Tutorials

43 http:\\ciscocertifications.info A: 172.16.30.65 0.0.0.0, or host 172.16.30.65 80. How many valid host IP addresses are available on the following subnetwork? 167.21.41.17/30 A: 2 81. What is the port number used by TCP? A: 6 82. What is the port number used by UDP? A: 17 83. What does the acronym ARP stand for? A: Address Resolution Protocol 84. Which protocol derives a hardware address from a known IP address? A: ARP 85. Which protocol works at the Internet layer of the DOD model and is responsible for making routing decisions? A: IP 86. Which port numbers are used by TCP and UDP to set up sessions with other hosts? A: 1023 and above 87. The User Datagram Protocol works at which layer of the DOD model? A: Host-to-Host. 88. Which protocol sends redirects back to an originating router? A: Internet Control Message Protocol - ICMP 89. Ping uses which Internet layer protocol? A: ICMP 90. What does the following command do? Router(config)# router igrp 101 A: Identifies IGRP as the routing protocol on autonomous system 101. 91. Which protocols use the Transport layer? A: TCP, UDP, and SPX. 92. Which of the following is a connectionless protocol that uses the Transport layer?