State whether the following statements are true or false: $1.$ The physical layer of the TCP$/$IP is responsible for the transmission of raw bits over a communication channel. $2.$ DNS is responsible for translating domain names into IP addresses. $3.$ Logical addressing is done at application layer. $4.$ All signals consist of three basic components: amplitude, frequency, and phase. $5.$ In a computer network, a MAC address uniquely identifies a device on a local network. $6.$ Bipolar$-$AMI encoding method uses alternative positive and negative values for $15.$ F $7.$ A sine wave is used to represent an digital signal. $8.$ The most popular protocol that handles dynamic assignment of IP addresses is Network Address Translation protocol. T $9.$ Logical connection is the direct connection between sender and receiver. $10.$ A firewall is a security device that monitors and controls incoming and outgoing network traffic.