Cisco 640-802 Online Practice Questions and Exam Preparation

Cisco 640-802 Online Questions & Answers

• Question 71:

  Given an IP address 172.16.28.252 with a subnet mask of 255.255.240.0, what is the correct network address?

  A. 172.16.16.0
  B. 172.16.0.0
  C. 172.16.24.0
  D. 172.16.28.0
  A. 172.16.16.0

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  For this example, the network range is 172.16.16.1 - 172.16.31.254, the network address is 172.16.16.0 and the broadcast IP address is 172.16.31.255.

• Question 72:

  What is the function of the command switchport trunk native vlan 999 on a Cisco Catalyst switch?

  A. It creates a VLAN 999 interface.
  B. It designates VLAN 999 for untagged traffic.
  C. It blocks VLAN 999 traffic from passing on the trunk.
  D. It designates VLAN 999 as the default for all unknown tagged traffic.
  B. It designates VLAN 999 for untagged traffic.

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  Configuring the Native VLAN for Untagged Traffic

  A trunk port configured with 802.1Q tagging can receive both tagged and untagged traffic. By default, the switch forwards untagged traffic in the native VLAN configured for the port. The native VLAN is VLAN 1 by default.

• Question 73:

  Refer to the exhibit.

  

  After HostA pings HostB, which entry will be in the ARP cache of HostA to support this transmission?

  

  A. Exhibit A
  B. Exhibit B
  C. Exhibit C
  D. Exhibit D
  E. Exhibit E
  F. Exhibit F
  A. Exhibit A

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  Host A knows host B is in another network so it will send the pings to its default gateway 192.168.6.1. Host A sends a broadcast frame asking the MAC address of 192.168.6.1. This information (IP and MAC address of the default gateway) is saved in its ARP cache for later use.

• Question 74:

  Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?

  A. IETF
  B. ANSI Annex D
  C. Q9333-A Annex A
  D. HDLC
  A. IETF

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  Cisco supports two Frame Relay encapsulation types: the Cisco encapsulation and the IETF Frame Relay encapsulation, which is in conformance with RFC 1490 and RFC 2427. The former is often used to connect two Cisco routers while the latter is used to connect a Cisco router to a non-Cisco router. You can test with your Cisco router when typing the command Router(config-if)#encapsulation frame-relay ? on a WAN link. Below is the output of this command (notice Cisco is the default encapsulation so it is not listed here, just press Enter to use it).

  

  Note: Three LMI options are supported by Cisco routers are ansi, Cisco, and Q933a. They represent the ANSI Annex D, Cisco, and ITU Q933-A (Annex A) LMI types, respectively. HDLC is a WAN protocol same as Frame-Relay and PPP so it is not a Frame Relay encapsulation type.

• Question 75:

  What is the correct routing match to reach 172.16.1.5/32?

  A. 172.16.1.0/26
  B. 172.16.1.0/25
  C. 172.16.1.0/24
  D. the default route
  A. 172.16.1.0/26

• Question 76:

  Which protocol is the Cisco proprietary implementation of FHRP?

  A. HSRP
  B. VRRP
  C. GLBP
  D. CARP
  A. HSRP

• Question 77:

  Which two link protocols are used to carry multiple VLANs over a single link? (Choose two.)

  A. VTP
  B. 802.1q
  C. IGP
  D. ISL
  E. 802.3u
  B. 802.1q
  D. ISL

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  Cisco switches can use two different encapsulation types for trunks, the industry standard 802.1q or the Cisco proprietary ISL. Generally, most network engineers prefer to use 802.1q since it is standards based and will interoperate with other vendors.

• Question 78:

  Refer to the diagram.

  

  All hosts have connectivity with one another. Which statements describe the addressing scheme that is in use in the network? (Choose three.)

  A. The subnet mask in use is 255.255.255.192.
  B. The subnet mask in use is 255.255.255.128.
  C. The IP address 172.16.1.25 can be assigned to hosts in VLAN1
  D. The IP address 172.16.1.205 can be assigned to hosts in VLAN1
  E. The LAN interface of the router is configured with one IP address.
  F. The LAN interface of the router is configured with multiple IP addresses.
  B. The subnet mask in use is 255.255.255.128.
  C. The IP address 172.16.1.25 can be assigned to hosts in VLAN1
  F. The LAN interface of the router is configured with multiple IP addresses.

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  The subnet mask in use is 255.255.255.128: This is subnet mask will support up to 126 hosts, which is needed.

  The IP address 172.16.1.25 can be assigned to hosts in VLAN1: The usable host range in this subnet is 172.16.1.1-172.16.1.126

  The LAN interface of the router is configured with multiple IP addresses: The router will need 2 subinterfaces for the single physical interface, one with an IP address that belongs in each VLAN.

• Question 79:

  What is the effect of using the service password-encryption command?

  A. Only the enable password will be encrypted.
  B. Only the enable secret password will be encrypted.
  C. Only passwords configured after the command has been entered will be encrypted.
  D. It will encrypt the secret password and remove the enable secret password from the configuration.
  E. It will encrypt all current and future passwords.
  E. It will encrypt all current and future passwords.

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  Enable vty, console, AUX passwords are configured on the Cisco device. Use the show run command to show most passwords in clear text. If the service password-encryption is used, all the passwords are encrypted. As a result, the security of device access is improved.

• Question 80:

  A router has learned three possible routes that could be used to reach a destination network. One route is from EIGRP and has a composite metric of 20514560. Another route is from OSPF with a metric of 782. The last is from RIPv2 and has a metric of 4. Which route or routes will the router install in the routing table?

  A. the OSPF route
  B. the EIGRP route
  C. the RIPv2 route
  D. all three routes
  E. the OSPF and RIPv2 routes
  B. the EIGRP route

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  When one route is advertised by more than one routing protocol, the router will choose to use the routing protocol which has lowest Administrative Distance. The Administrative Distances of popular routing protocols are listed below: