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Final Exam Practice Test

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53 questions
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  • Q1
    Refer to the exhibit. A network administrator is configuring a router as a DHCPv6 server. The administrator issues a show ipv6 dhcp pool command to verify the configuration. Which statement explains the reason that the number of active clients is 0?
    Question Image
    The state is not maintained by the DHCPv6 server under stateless DHCPv6 operation.
    No clients have communicated with the DHCPv6 server yet.
    The IPv6 DHCP pool configuration has no IPv6 address range specified.
    The default gateway address is not provided in the pool.
  • Q2
    Which command, when issued in the interface configuration mode of a router, enables the interface to acquire an IPv4 address automatically from an ISP, when that link to the ISP is enabled?
    ip address dhcp
    ip helper-address
    ip dhcp pool
    service dhcp
  • Q3
    Which kind of message is sent by a DHCP client when its IP address lease has expired?​
    a DHCPREQUEST broadcast message​
    a DHCPDISCOVER unicast message​
    a DHCPDISCOVER broadcast message
    a DHCPREQUEST unicast message​
  • Q4
    Refer to the exhibit. R1 has been configured as shown. However, PC1 is not able to receive an IPv4 address. What is the problem?
    Question Image
    The ip address dhcp command was not issued on the interface Gi0/1.
    R1 is not configured as a DHCPv4 server.​
    The ip helper-address command was applied on the wrong interface
    A DHCP server must be installed on the same LAN as the host that is receiving the IP address.
  • Q5
    A college marketing department has a networked storage device that uses the IP address, TCP port 443 for encryption, and UDP port 4365 for video streaming. The college already uses PAT on the router that connects to the Internet. The router interface has the public IP address of The IP NAT pool currently uses the IP addresses ranging from Which configuration would the network administrator add to allow this device to be accessed by the marketing personnel from home?
    ip nat pool mktv ip nat outside source static
    ip nat inside source static tcp 443 443 ip nat inside source static udp 4365 4365
    ip nat inside source static tcp 443 443 ip nat inside source static udp 4365 4365
    No additional configuration is necessary.
  • Q6
    What is a disadvantage of NAT?
    The costs of readdressing hosts can be significant for a publicly addressed network.​
    There is no end-to-end addressing
    The router does not need to alter the checksum of the IPv4 packets.​
    The internal hosts have to use a single public IPv4 address for external communication.
  • Q7
    Which type of traffic would most likely have problems when passing through a NAT device?
  • Q8
    What benefit does NAT64 provide?
    It allows sites to connect IPv6 hosts to an IPv4 network by translating the IPv6 addresses to IPv4 addresses
    It allows sites to use private IPv6 addresses and translates them to global IPv6 addresses.
    It allows sites to connect multiple IPv4 hosts to the Internet via the use of a single public IPv4 address.
    It allows sites to use private IPv4 addresses, and thus hides the internal addressing structure from hosts on public IPv4 networks
  • Q9
    Refer to the exhibit. The Gigabit interfaces on both routers have been configured with subinterface numbers that match the VLAN numbers connected to them. PCs on VLAN 10 should be able to print to the P1 printer on VLAN 12. PCs on VLAN 20 should print to the printers on VLAN 22. What interface and in what direction should you place a standard ACL that allows printing to P1 from data VLAN 10, but stops the PCs on VLAN 20 from using the P1 printer? (Choose two.)
    Question Image
    R2 S0/0/1,R1 S0/0/0
    R1 Gi0/1.12,outbound
    inbound, R2 Gi0/1.20
    outbound, R1 S0/0/0
  • Q10
    Which two packet filters could a network administrator use on an IPv4 extended ACL? (Choose two.)
    ICMP message type, destination UDP port number
    computer type, destination UDP port number
    source TCP hello address, computer type
    ICMP message type,computer type
  • Q11
    A network administrator is explaining to a junior colleague the use of the lt and gt keywords when filtering packets using an extended ACL. Where would the lt or gt keywords be used?
    in an IPv6 named ACL that permits FTP traffic from one particular LAN getting to another LAN
    in an IPv4 extended ACL that allows packets from a range of TCP ports destined for a specific network device
    in an IPv6 extended ACL that stops packets going to one specific destination VLAN
    in an IPv4 named standard ACL that has specific UDP protocols that are allowed to be used on a specific server
  • Q12
    Which three values or sets of values are included when creating an extended access control list entry? (Choose three.)
    default gateway address and wildcard mask, source address and wildcard mask,destination subnet mask and wildcard mask
    destination subnet mask and wildcard mask,source subnet mask and wildcard mask,source address and wildcard mask
    access list number between 100 and 199, destination address and wildcard mask, source address and wildcard mask
    default gateway address and wildcard mask, source subnet mask and wildcard mask, destination subnet mask and wildcard mask
  • Q13
    A network administrator is designing an ACL. The networks,,,, and are affected by the ACL. Which wildcard mask, if any, is the most efficient to use when specifying all of these networks in a single ACL permit entry?
  • Q14
    The computers used by the network administrators for a school are on the network. Which two commands are needed at a minimum to apply an ACL that will ensure that only devices that are used by the network administrators will be allowed Telnet access to the routers? (Choose two.)
    ip access-group 5 out, ip access-group 5 in
    access-class 5 in,access-list 5 permit
    access-list 5 deny any, access-class 5 in
    access-list 5 deny any, access-list standard VTY permit
  • Q15
    A network administrator is adding ACLs to a new IPv6 multirouter environment. Which IPv6 ACE is automatically added implicitly at the end of an ACL so that two adjacent routers can discover each other?
    permit icmp any any nd-na
    deny ip any any
    permit ip any any
    permit ip any host ip_address

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