CCNA 1 Final Exam Study Guide Graded A+

characteristics of fault tolerant network - Answer-Redundancy Qos mechanisms for priorities - Answer-With a QoS policy in place, the router can manage the flow of data and voice traffic, giving priority to voice communications if the network experiences congestion. Benefits of using cloud computing - Answer-can be accessed from anywhere, less space, cheaper, lower overhead function of the shell in an OS - Answer-to act as an intermediary between user and OS through GUI or CLI SSH - Answer-Secure Shell (SSH) - SSH is a method for remotely establishing a secure CLI connection through a virtual interface, over a network. Unlike a console connection, SSH connections require active networking services on the device including an active interface configured with an address. SSH is the recommended method for remote management because it provides a secure connection. SSH provides encrypted password authentication and transport of session data. This keeps the user ID, password, and the details of the management session private. Most versions of Cisco IOS include an SSH server and an SSH client that can be used to establish SSH sessions with other devices. modes of operation - Answer-User EXEC Mode ">" This mode has limited capabilities but is useful for basic operations. It allows only a limited number of basic monitoring commands but does not allow the execution of any commands that might change the configuration of the device. The user EXEC mode is identified by the CLI prompt that ends with the > symbol. Privileged EXEC Mode "#" To execute configuration commands, a network administrator must access privileged EXEC mode. Higher configuration modes, like global configuration mode, can only be reached from privileged EXEC mode. The privileged EXEC mode can be identified by the prompt ending with the # symbol. Ctrl-Shft-6 key command - Answer-All purpose break sequence. used to abort DNS lookups, traceroutes and pings. interface VLAN1 - Answer-Cisco IOS Layer 2 switches have physical ports for devices to connect. These ports do not support Layer 3 IP addresses. Therefore, switches have one or more switch virtualinterfaces (SVIs). These are virtual interfaces because there is no physical hardware on the device associated with it. An SVI is created in software. The virtual interface provides a means to remotely manage a switch over a network using IPv4. Each switch comes with one SVI appearing in the default configuration "out-of-the-box." The default SVI is interface VLAN1. TCP - Layer 4 protocol, responsibilities in the network communication process - Answeradvantages of open protocol - Answer-encourages competition and promotes choices benefits of layered model - Answer-assists in protocol design prevents technology in one layer from affecting other layers OSI model Vs TCP/IP Model layers - Answername of the transport layer PDU - Answer-segment