I am related to IP networks. I divide a network into smaller networks. I borrow bits from the host portion of an address to create additional network portions. What am I?, An LED was connected directly to a 12 V supply. No resistor was present. It worked for a very short time, then died. What most likely happened?, A 4:1 multiplexer has I0 = 0, I1 = 1, I2 = 0, I3 = 1. Selection lines: S1S0 = 11. Find the output., You are secretly trying to communicate with a server. Your device knows the server's IP but not its MAC address. What do you send first?, Check whether these statements are correct or not: 1. A half-wave rectifier uses only one half-cycle of the input. 2. A full-wave rectifier uses both half-cycles of the input. 3. A rectifier converts DC into AC., A PC can ping its own IP, ping another PC in the LAN, and ping the router, but it cannot ping 8.8.8.8. What should you investigate?, Check whether these statements are correct or not: 1. A router forwards packets between networks. 2. Routing decisions are primarily based on MAC addresses. 3. A router commonly operates at the Network layer., Packet journey: PC -> Switch -> Router -> Router -> Server. TTL started at 64. Server receives TTL = 61. How many Layer-3 hops occurred?, I identify a device or interface logically within a network. I help routers determine where packets should be forwarded. My network and host portions can be determined using a subnet mask or prefix length. What am I?, 1. ARP 2. MAC 3. Ethernet 4. Switch. What is the hidden connection?, I can distort or interfere with a useful signal. I can be random and may exist even when the communication system itself is working correctly. What am I?, I perform binary addition. I can add three input bits. One of my inputs is a carry from a previous stage. What am I?, I convert an alternating quantity into a unidirectional one. My output still contains unwanted AC components. A capacitor filter can be connected after me to reduce the ripple in my output. What am I?, I operate mainly at the network layer. I use logical addresses to determine where packets should go. I select a forwarding path using information maintained in a routing table. What am I?, I am commonly used for network testing. I can check whether a destination is reachable. I commonly use ICMP Echo Request and Echo Reply messages. What am I?

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