The Bits and Bytes of Computer Networking

Is a brief note about how computers are networked together to share information resources and also communicate

What ordering of TCP flags makes up the Three-way Handshake? SYN, SYN/ACK, ACK; The computer that wants to establish a connection sends a packet with the SYN flag set. Then, the server responds with a packet with both the SYN and ACK flags set. Finally, the original computer sends a packet with just the ACK flag set. Transport layer protocols, like TCP and UDP, introduce the concept of a port. How many bits is a port field? 16 bits; A TCP or UDP port is a 16-bit number, meaning there are th...

What are the 5 Networking Layers in order? 5. Application layer 4. Transport layer 3. Network layer 2. data link layer 1. Physical layer Physical Layer This layer has devices that interconnect computers with cabling connectors. It sends and receives signals on the physical wire or antenna to transmit the bits found in frames. Data Link layer Responsible for defining a common way of interpreting signals, so network deices can communicate. Network Layer Allows different networks to commun...

TCP/IP Five Layer Model Physical layer , Data link Layer, network Layer, Transport Layer, Application Layer OSI Model (7 layers) The seven layers Physical, Data link Layer, Network layer, Transport Layer, Session Layer, Presentation Layer, Application Layer Internetwork The loose collection of networks called "the Internet" is the short form of which of the following words? a. internetwork c. interarpanet b. internexus d. interconnect Protocal (Network) code of correct conduct Defined se...

TCP/IP Five Layer Model Physical layer , Data link Layer, network Layer, Transport Layer, Application Layer OSI Model (7 layers) The seven layers Physical, Data link Layer, Network layer, Transport Layer, Session Layer, Presentation Layer, Application Layer Internetwork The loose collection of networks called "the Internet" is the short form of which of the following words? a. internetwork c. interarpanet b. internexus d. interconnect Protocal (Network) code of correct conduct Defined se...

Another term for POTS, or the Plain Old Telephone System, is _______________. Public Switched Telephone Network; POTS and PSTN refer to the same thing. A baud rate is a measurement of the number of ______________________. bits that can be sent across a telephone line every second; A baud rate is equivalent to bits per second. .Question 1 T1 is short for __________. T1 is short for Transmission System 1 How fast is a T1 line? A T1 communicates at speeds of 1.544 Kb/sec. Select all statemen...

The protocol used to communicate network errors is known as __________. ICMP, ICMP is used to communicate errors back to the client. The ping utility sends what message type? echo request; By default, the ping utility sends an Echo Request ICMP message type. On Windows, one of the tools you can use to verify connectivity to a specific port is ________. Test-NetConnection ; Test-NetConnection lets you test many things, including connectivity to a specific port on a remote host. One of Leve...

Which of the following is an example of a network layer (layer 3) protocol? IP, TCP, UDP, Ethernet IP, or Internet Protocol, is the most common network layer protocol. What's the difference between a client and a server? A client requests data, and a server responds to that request. Which of the following are examples of layers of our five-layer network model? Check all that apply. The physical layer The transport layer, The presentation layer The application layer The physical layer T...

Which of the following is an example of a network layer (layer 3) protocol? IP, TCP, UDP, Ethernet IP, or Internet Protocol, is the most common network layer protocol. What's the difference between a client and a server? A client requests data, and a server responds to that request. Which of the following are examples of layers of our five-layer network model? Check all that apply. The physical layer The transport layer, The presentation layer The application layer The physical layer T...

What transport layer protocol does DNS normally use? UDP IP TCP ICMP Great job! While DNS over TCP does exist, UDP is the most common protocol. A DNS TTL determines what? TTL stands for Time to Live and determines how long a DNS entry can be cached. How many root servers are there? 13 root servers. An A Record contains what? IPv4 address Select all that are true One domain name can point to one IP. One domain name can point to many IPs. Many domain names can point to the same IP.