Cisco 640-802 Online Practice Questions and Exam Preparation

Cisco 640-802 Online Questions & Answers

• Question 271:

  A network administrator enters the following command on a router: logging trap 3. What are three message types that will be sent to the Syslog server? (Choose three.)

  A. informational
  B. emergency
  C. warning
  D. critical
  E. debug
  F. error
  B. emergency
  D. critical
  F. error

  ---

  The Message Logging is divided into 8 levels as listed below: If you specify a level with the "logging trap level" command, that level and all the higher levels will be logged. For example, by using the "logging trap 3 command, all the logging of emergencies, alerts, critical, and errors, will be logged.

  

• Question 272:

  Refer to Exhibit:

  

  How many broadcast domains are shown in the graphic assuming only the default VLAN is configured on the switches?

  A. one
  B. two
  C. six
  D. twelve
  A. one

  ---

  Only router can break up broadcast domains but in this exhibit no router is used so there is only 1 broadcast domain.

  For your information, there are 7 collision domains in this exhibit (6 collision domains between hubs and switches + 1 collision between the two switches).

• Question 273:

  Refer to the exhibit.

  

  Which statement describes DLCI 17?

  A. DLCI 17 describes the ISDN circuit between R2 and R3.
  B. DLCI 17 describes a PVC on R2. It cannot be used on R3 or R1.
  C. DLCI 17 is the Layer 2 address used by R2 to describe a PVC to R3.
  D. DLCI 17 describes the dial-up circuit from R2 and R3 to the service provider.
  C. DLCI 17 is the Layer 2 address used by R2 to describe a PVC to R3.

  ---

  DLCI-Data Link Connection Identifier Bits: The DLCI serves to identify the virtual connection so that the receiving end knows which information connection a frame belongs to. Note that this DLCI has only local significance. Frame Relay is strictly a Layer 2 protocol suite.

• Question 274:

  What are three broadband wireless technologies? (Choose three.)

  A. WiMax
  B. satellite Internet
  C. municipal Wi-Fi
  D. site-to-site VPN
  E. DSLAM
  F. CMTS
  A. WiMax
  B. satellite Internet
  C. municipal Wi-Fi

• Question 275:

  What are the possible trunking modes for a switch port? (Choose three.)

  A. transparent
  B. auto
  C. on
  D. desirable
  E. client
  F. forwarding
  B. auto
  C. on
  D. desirable

  ---

  These are the different types of trunk modes:

  ON: This mode puts the port into permanent trunk mode and negotiates to convert the link into a trunk link. The port becomes a trunk port even if the adjacent port does not agree to the change.

  

  OFF: This mode puts the port into permanent non-trunk mode and negotiates to convert the link into a non-trunk link. The port becomes a non-trunk port even if the adjacent port does not agree to the change.

  

  Desirable: This mode causes the port to actively attempt to convert the link into a trunk link. The port becomes a trunk port if the adjacent port is set to on, desirable, or auto mode.

  

  Auto: This mode enables the port to convert the link into a trunk link. The port becomes a trunk port if the adjacent port is set to on or desirable mode. This is the default mode for Fast and Gigabit Ethernet ports.

  

  Nonegotiate: This mode puts the port into permanent trunk mode, but does not allow the port to generate Dynamic Trunking Protocol (DTP) frames. The adjacent port must be configured manually as a trunk port to establish a trunk link.

  

• Question 276:

  Which switch would STP choose to become the root bridge in the selection process?

  A. 32768: 11-22-33-44-55-66
  B. 32768: 22-33-44-55-66-77
  C. 32769: 11-22-33-44-55-65
  D. 32769: 22-33-44-55-66-78
  A. 32768: 11-22-33-44-55-66

  ---

  The root bridge of the spanning tree is the bridge with the smallest (lowest) bridge ID. Each bridge has a configurable priority number and a MAC Address; the bridge ID contains both numbers combined together - Bridge priority + MAC (32768.0200.0000.1111). The Bridge priority default is 32768 and can only be configured in multiples of 4096(Spanning tree uses the 12 bits extended system ID). To compare two bridge IDs, the priority is compared first, as if looking at a real number anything less than 32768...will become the target of being the root. If two bridges have equal priority then the MAC addresses are compared; for example, if switches A (MAC=0200.0000.1111) and B (MAC=0200.0000.2222) both have a priority of 32768 then switch A will be selected as the root bridge. In this case, 32768: 11-22-33-44-55-66 would be the bridge because it has a lower priority and MAC address.

• Question 277:

  Refer to the exhibit.

  

  Why is flash memory erased prior to upgrading the IOS image from the TFTP server?

  A. The router cannot verify that the Cisco IOS image currently in flash is valid.
  B. Flash memory on Cisco routers can contain only a single IOS image.
  C. Erasing current flash content is requested during the copy dialog.
  D. In order for the router to use the new image as the default, it must be the only IOS image in flash.
  C. Erasing current flash content is requested during the copy dialog.

  ---

  During the copy process, the router asked "Erasing flash before copying? [confirm]" and the administrator confirmed (by pressing Enter) so the flash was deleted. Note: In this case, the flash has enough space to copy a new IOS without deleting the current one. The current IOS is deleted just because the administrator wants to do so. If the flash does not have enough space you will see an error message like this:

  

• Question 278:

  Which three are the components of SNMP? (Choose three)

  A. MIB
  B. SNMP Manager
  C. SysLog Server
  D. SNMP Agent
  E. Set
  A. MIB
  B. SNMP Manager
  D. SNMP Agent

  ---

  SNMP is an application-layer protocol that provides a message format for communication between SNMP managers and agents. SNMP provides a standardized framework and a common language used for the monitoring and management

  of devices in a network.

  The SNMP framework has three parts:

  +

  An SNMP manager

  +

  An SNMP agent

  +

  A Management Information Base (MIB)

  The SNMP manager is the system used to control and monitor the activities of network hosts using SNMP. The most common managing system is called a Network Management System (NMS). The term NMS can be applied to either a dedicated device used for network management, or the applications used on such a device. A variety of network management applications are available for use with SNMP. These features range from simple command-line applications to feature-rich graphical user interfaces (such as the CiscoWorks2000 line of products).

  The SNMP agent is the software component within the managed device that maintains the data for the device and reports these data, as needed, to managing systems. The agent and MIB reside on the routing device (router, access server, or switch). To enable the SNMP agent on a Cisco routing device, you must define the relationship between the manager and the agent.

  The Management Information Base (MIB) is a virtual information storage area for network management information, which consists of collections of managed objects.

• Question 279:

  Which two statements about IPv6 router advertisement messages are true? (Choose two.)

  A. They use ICMPv6 type 134.
  B. The advertised prefix length must be 64 bits.
  C. The advertised prefix length must be 48 bits.
  D. They are sourced from the configured IPv6 interface address.
  E. Their destination is always the link-local address of the neighboring node.
  A. They use ICMPv6 type 134.
  B. The advertised prefix length must be 64 bits.

• Question 280:

  Which three of these statements regarding 802.1Q trunking are correct? (Choose three.)

  A. 802.1Q native VLAN frames are untagged by default.
  B. 802.1Q trunking ports can also be secure ports.
  C. 802.1Q trunks can use 10 Mb/s Ethernet interfaces.
  D. 802.1Q trunks require full-duplex, point-to-point connectivity.
  E. 802.1Q trunks should have native VLANs that are the same at both ends.
  A. 802.1Q native VLAN frames are untagged by default.
  C. 802.1Q trunks can use 10 Mb/s Ethernet interfaces.
  E. 802.1Q trunks should have native VLANs that are the same at both ends.

  ---

  By default, 802.1Q trunk defined Native VLAN in order to forward unmarked frame. Switches can forward Layer 2 frame from Native VLAN on unmarked trunks port. Receiver switches will transmit all unmarked packets to Native VLAN. Native VLAN is the default VLAN configuration of port. Note for the 802.1Q trunk ports between two devices, the same Native VLAN configuration is required on both sides of the link. If the Native VLAN in 802.1Q trunk ports on same trunk link is properly configured, it could lead to layer 2 loops. The 802.1Q trunk link transmits VLAN information through Ethernet.