Chapter7

Dao Xuan Hung - Take Exam Exam questions 1 . Which of the following are related to Frame Relay? Choose three. CIR Be Bc BGP 2 . What does Frame Relay use to control congestion? Choose three. DE SDLC BECN FECN 3 . Based on the configuration shown, what is the CIR of interface Serial0.300? interface Serial0 no ip address encapsulation frame-relay no fair-queue frame-relay traffic-shaping bandwidth 1536 interface Serial0.100 point-to-point ip address 10.1.1.1 255.255.255.0 frame-relay interface-dlci 100 class Cisco interface Serial0.200 point-to-point ip address 10.1.2.1 255.255.255.0 frame-relay interface-dlci 200 class Cisco interface Serial0.300 point-to-point ip address 10.1.3.1 255.255.255.0 frame-relay interface-dlci 300 map-class frame-relay Cisco frame-relay cir 128000 frame-relay adaptive-shaping becn 56 kbps 64 kbps 128 kbps 896 kbps 1536 kbps 4 . Which of the following are true regarding packet switching? Choose two. A modem is used to enable devices to share packet switching circuits. ATM, Frame Relay, SMDS, and X.25 are all examples of packet-switched WAN technologies. Packet switching is a WAN switching method in which network devices share a single point-to-point link to transport packets from a source to a destination across a carrier network. A bridge is used to enable devices to share packet switching circuits. 5 . At which layers of the OSI reference model does Frame Relay operate? Choose two. Network Data Link Physical Transport 6 . What is the function of Frame Relay BECN? Identifies the logical virtual circuit between CPE and the Frame-Relay switch Signaling between the CPE and the Frame-Relay switch that is responsible for managing the connection and maintaining status between devices The rate at which a Frame-Relay switch agrees to transfer data A frame sent from the Frame-Relay switch to the source router when network congestion is detected 7 . Compression is best used in which of the following situations? Fast network links Slow network links with no congestion Frame Relay link with 10 percents – 40 percents utilization BRI with constant 60 percents - 100 percents utilization 8 . What information is needed to choose a CIR (Committed Information Rate) for a Frame Relay network? Choose three. Amount of expected interactive traffic Amount of expected bandwidth regeneration Amount of expected file and transfer traffic Amount of expected broadcast traffic 9 . Which of the following are true regarding a DLCI (Data-Link Connection Identifier)? Choose two. It identifies a Frame Relay virtual circuit It helps a Token Ring network identify the active monitor It is usually assigned by the Frame Relay service provider It must be the same for all DTE devices on the WAN 10 . Which of the following is true of Frame Relay FECN and/or BECN? Choose one. Logical virtual circuit between Customer Equipment and Frame-Relay network The rate at which a Frame-Relay switch agrees to transfer data Frame sent from the Frame-Relay network to a router when the network is congested Signaling between Customer Equipment and Frame-Relay network responsible for connection management and maintaining status 11 . How does Traffic Shaping help to reduce congestion on an internetwork? Reduces the flow of outbound traffic from a router interface into a network backbone Shapes frames to allow bit rounding Allows multiple protocols to run on same network cable Causes protocol swapping which reduces interoperability issues 12 . You have a hub-and-spoke Frame Relay network. None of the spoke routers can ping any other spoke routers, yet all spoke routers can ping the hub router. What is a possible cause? Disabled split horizon Poison reverse issue Inverse ARP issue Spanning-tree loop 13 . Which CHAPTER ASP.NET WEB SERVER CONTROLS ASP.Net Web Server Control Syntax ASP.Net Web Server Control: Every element begin by prefix asp Example: Every element has both Id and Runat attribute You want to format control , you right-click control->properties Common Controls •Standard •Data •Navigation •Login Standard •Label •Textbox •Button •CheckBox and Radio •FileUpload •List Controls group •AddRotator •XML Label Label server control is used to display text in the browser Property: Text: is used set or get value String strName=txtName.Text; Or txtName.Text=“Value”; TextBox(cont) AutoPostBack: has value true or false When an an action on a Web page triggers an event Method: Focus(): This method enables you to dynamically the end user’s cursor in appointed form element txtName.Focus(); Button Buttons are the usual element used to submit forms Property: Text: set or get value String strName=btnName.Text; Or btnName.Text=“Value”; Button CommandName: permit multiple buttons your form all working from a single event Events of Button: OnClientClick: create click event from Web browser, you can call a method to process client side OnClick: create event click from server side, you can call a method to process server side OnCommand: two buttons is the same event 10 Button 11 Example Button function Greeting() { alert(“Hello everybody!”) } 12 Checkbox and RadioButton Property: Text: get or set value Checked: true or false AutoPostBack: true or false Events of Button: OnCheckedChanged: event are created when user click CheckBox or Radiobutton Control 13 List Control group DropDownList  ListBox  CheckBoxList  RadioButtonList Each control can contain some options Every option are created by ListItem tag  14 List Control group (cont) Or text 15 List Control group (cont) And Pháp Hoa 16 List Control group (cont) Property: AutoPostBack: true or false Items: returns ListItem collection Items array which contain every item So, you want to access to item using index: Items[i] Which i=0,n-1 (n=Items.Count) Items.Count: return amount item Items.Add(ListItem): add item in ListControl Items.Remove(ListItem): remove item in ListControl Items.Clear(): Remove all item Items[i].Selected: return true or false Return true if Item are selected 17 List Control group (cont) Items[i].Text: Return item text Items[i].Value: Return item value SelectedIndex: return selected index SelectedItem:return selected item SelectedValue: return selected value DataSource: set value from DataSource such as DataTable,DataSet,Array,Collection,DataView DataTextField: set text item from DataSource DataValueField: set value item from DataSource DataBind(): binding data to ListControl 18 List Control group (cont) n=ListControl.Items.Count; for(int i=0;i