Networking Essentials Final Exam Review

What is a disadvantage of deploying a peer-to-peer network model? - Answer-lack of centralized administration What is a purpose of an IP address? - Answer-It identifies the source and destination of data packets. A consumer places a smartphone close to a pay terminal at a store and the shopping charge is successfully paid. Which type of wireless technology was used? - Answer-NFC Which type of network cable is commonly used to connect office computers to the local network? - Answer-twisted-pair cable What are two advantages of using fiber-optic cabling to interconnect devices? (Choose two.) - Answer-Fiber-optic cable is immune from EMI and RFI. Fiber-optic cables can extend several miles. The functions of which two layers of the OSI model are matched to the network access layer of the TCP/IP model? (Choose two.) - Answer-physical data link What is the minimum size of a valid Ethernet frame? - Answer-64 bytes A network design engineer has been asked to design the IP addressing scheme for a customer network. The network will use IP addresses from the 192.168.30.0/24 network. The engineer allocates 254 IP addresses for the hosts on the network but excludes 192.168.30.0/24 and 192.168.30.255/24 IP addresses. Why must the engineer exclude these two IP addresses? - Answer-192.168.30.0/24 is the network IP address and 192.168.30.255/24 is the IP broadcast address. Which protocol is used to automatically assign IP addresses to hosts? - Answer-DHCP What are three advantages of using private IP addresses and NAT? (Choose three.) - Answer-conserves registered public IP addresses hides private LAN addressing from outside devices that are connected to the Internet permits LAN expansion without additional public IP addresses What was the reason for the creation and implementation of IPv6? - Answer-to relieve IPv4 address depletion