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51 Questions - Developed by:
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Which command would be best to use on an unused switch port if a company adheres to the best practices as recommended by Cisco?
Ip dhcp snooping
Switchport port-security violation shutdown
Switchport port-security mac-address sticky
Switchport port-security mac-address sticky mac-address
Refer to the exhibit. An administrator is trying to configure PAT on R1, but PC-A is unable to access the Internet. The administrator tries to ping a server on the Internet from PC-A and collects the debugs that are shown in the exhibit. Based on this output, what is most likely the cause of the problem?
The address on Fa0/0 should be 188.8.131.52.
The inside and outside NAT interfaces have been configured backwards.
The NAT source access list matches the wrong address range.
The inside global address is not on the same subnet as the ISP
A small company has a web server in the office that is accessible from the Internet. The IP address 192.168.10.15 is assigned to the web server. The network administrator is configuring the router so that external clients can access the web server over the Internet. Which item is required in the NAT configuration?
An ACL to identify the local IPv4 address of the web server
The ip nat inside source command to link the inside local and inside global addresses
The keyword overload for the ip nat inside source command
An IPv4 address pool
Which type of static route typically uses the distance parameter in the ip route global configuration command?
Standard static route
Floating static route
Summary static route
Default static route
Refer to the exhibit. What address will be used as the router ID for the OSPFv3 process?
2001: DB8: ACAD:1::1
2001: DB8: CAFE:1::1
What is the order of packet types used by an OSPF router to establish convergence?
Hello, DBD, LSR, LSU, LSAck
Hello, LSAck, LSU, LSR, DBD
LSU, LSAck, Hello, DBD, LSR
LSAck, Hello, DBD, LSU, LSR
Refer to the exhibit. If the IP addresses of the default gateway router and the DNS server are correct, what is the configuration problem?
The IP address of the default gateway router is not contained in the excluded address list
The default-router and dns-server commands need to be configured with subnet masks.
The IP address of the DNS server is not contained in the excluded address list.
The DNS server and the default gateway router should be in the same subnet.
A network administrator is testing IPv6 connectivity to a web server. The network administrator does not want any other host to connect to the web server except for the one test computer. Which type of IPv6 ACL could be used for this situation?
Only a standard ACL
Only an extended ACL
An extended, named, or numbered ACL
A standard or extended ACL
Only a named ACL
Open the PT activity. Perform the tasks in the activity instructions and then answer the question.
To verify that the SVI is configured correctly, answer this question: Which ping command completed successfully?
What is an advantage of using dynamic routing protocols instead of static routing?
Ability to actively search for new routes if the current path becomes unavailable
Easier to implement
More secure in controlling routing updates
Fewer router resource overhead requirements
How many classful networks are summarized by the static summary route ip route 192.168.32.0 255.255.248.0 S0/0/0?
Which switching method provides error-free data transmission?
A client is using SLAAC to obtain an IPv6 address for its interface. After an address has been generated and applied to the interface, what must the client do before it can begin to use this IPv6 address?
It must send a DHCPv6 INFORMATION-REQUEST message to request the address of the DNS server.
It must send a DHCPv6 REQUEST message to the DHCPv6 server to request permission to use this address.
It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.
It must send an ICMPv6 Router Solicitation message to determine what default gateway it should use.
Refer to the exhibit. Inter-VLAN communication between VLAN 10, VLAN 20, and VLAN 30 is not successful. What is the problem?
The access interfaces do not have IP addresses and each should be configured with an IP address.
The switch interface FastEthernet0/1 is configured to not negotiate and should be configured to negotiate.
The switch interfaces FastEthernet0/2, FastEthernet0/3, and FastEthernet0/4 are configured to not negotiate and should be configured to negotiate.
The switch interface FastEthernet0/1 is configured as an access interface and should be configured as a trunk interface.
Which network design may be recommended for a small campus site that consists of a single building with a few users?
A network design where the access and core layers are collapsed into a single layer
A three-tier campus network design where the access, distribution, and core are all separate layers, each one with very specific functions
A collapsed core network design
A network design where the access and distribution layers are collapsed into a single layer
How is the router ID for an OSPFv3 router determined?
The highest EUI-64 ID on an active interface
The lowest MAC address on an active interface
The highest IPv4 address on an active interface
The highest IPv6 address on an active interface
Refer to the exhibit. In the routing table entry, what is the administrative distance?
What does an OSPF area contain?
Routers that share the same process ID
Routers that have the same link-state information in their LSDBs
Routers whose SPF trees are identical
Routers that share the same router ID
Which command will create a static default route on R1 to send all traffic to the Internet and use serial 0/0 as the exit interface?
R1(config)# ip route 0.0.0.0 0.0.0.0 serial 0/0
R1(config)# ip route 255.255.255.255 0.0.0.0 serial 0/0
R1(config)# ip route 0.0.0.0 255.255.255.255 serial 0/0
R1(config)# ip route 0.0.0.0 255.255.255.0 serial 0/0
What is a result of connecting two or more switches together?
The number of broadcast domains is increased.
The number of collision domains is reduced.
The size of the collision domain is increased.
The size of the broadcast domain is increased
Which DHCP IPv4 message contains the following information?
What is meant by the term “best match” when applied to the routing table lookup process?
Using router-on-a-stick inter-VLAN routing, how many subinterfaces have to be configured to support 10 VLANs?
Refer to the exhibit. The student on the H1 computer continues to launch an extended ping with expanded packets at the student on the H2 computer. The school network administrator wants to stop this behavior, but still allow both students access to web-based computer assignments. What would be the best plan for the network administrator?
Apply an inbound extended ACL on R1 Gi0/0.
Apply an outbound extended ACL on R1 S0/0/1.
Apply an outbound standard ACL on R2 S0/0/1.
Apply an inbound standard ACL on R1 Gi0/0.
Refer to the exhibit. A network administrator is investigating a lag in network performance and issues the show interfaces fastethernet 0/0 command. Based on the output that is displayed, what two items should the administrator check next? (Choose two.)
Duplex settings, cable lengths
Incorrect cable types
Damaged cable termination
Refer to the exhibit. A network administrator is configuring inter-VLAN routing on a network. For now, only one VLAN is being used, but more will be added soon. What is the missing parameter that is shown as the highlighted question mark in the graphic?
It identifies the type of encapsulation that is used.
It identifies the native VLAN number.
It identifies the number of hosts that are allowed on the interface.
It identifies the VLAN number.
It identifies the subinterface.
Which command will verify the status of both the physical and the virtual interfaces on a switch?
Show ip interface brief
Refer to the exhibit. Which would be chosen as the router ID of R2?
The router ID has to be manually configured.
2001: DB8: CAFE:2::/64
2001: DB8: CAFE: A001::/64
A router with two LAN interfaces, two WAN interfaces, and one configured loopback interface is operating with OSPF as its routing protocol. What does the router OSPF process use to assign the router ID?
The highest IP address that is configured on the WAN interfaces
The highest IP address on the LAN interfaces
The IP address of the interface that is configured with priority 0
The OSPF area ID that is configured on the interface with the highest IP address
The loopback interface IP address
Which two pieces of information are required when creating a standard access control list? (Choose two.)
Destination address and wildcard mask
Access list number between 100 and 199
Subnet mask and wildcard mask
Source address and wildcard mask, access list number between 1 and 99
What is the effect of the access control list wildcard mask 0.0.0.15? (Choose two.)
The first 28 bits of a supplied IP address will be matched, The last four bits of a supplied IP address will be ignored.
The first 32 bits of a supplied IP address will be matched.
The first 28 bits of a supplied IP address will be ignored.
The last five bits of a supplied IP address will be ignored.
The last four bits of a supplied IP address will be matched.
A college student is studying for the Cisco CCENT certification and is visualizing extended access lists. Which three keywords could immediately follow the keywords permit or deny as part of an extended access list? (Choose three.)
Udp, tcp, icmp
Which two keywords can be used in an access control list to replace a wildcard mask or address and wildcard mask pair? (Choose two.)
Fill in the blank. Do not use abbreviations.
The “------” command configures a switch port to operate in the full-duplex mode.
Refer to the exhibit. R1 and R2 are OSPFv3 neighbors. Which address would R1 use as the next hop for packets that are destined for the Internet?
2001: DB8: C5C0:1::2
2001: DB8: ACAD:1::2
FE80::21E: BEFF: FEF4:5538
In a routing table which route can never be an ultimate route?
Level two route
Level one route
Refer to the exhibit. Host A has sent a packet to host B. What will be the source MAC and IP addresses on the packet when it arrives at host B?
Source MAC: 00E0.FE91.7799 Source IP: 10.1.1.1
Source MAC: 00E0.FE10.17A3 Source IP: 192.168.1.1
Source MAC: 00E0.FE91.7799 Source IP: 192.168.1.1
Source MAC: 00E0.FE91.7799 Source IP: 10.1.1.10
Source MAC: 00E0.FE10.17A3 Source IP: 10.1.1.10
What is the effect of entering the network 192.168.10.1 0.0.0.0 area 0 command in router configuration mode?
The interface with the IPv4 address 192.168.10.1 will be a passive interface.
OSPF advertisements will include the specific IPv4 address 192.168.10.1.
This command will have no effect because it uses a quad zero wildcard mask.
OSPF advertisements will include the network on the interface with the IPv4 address 192.168.10.1.
Refer to the exhibit. A PC at address 10.1.1.45 is unable to access the Internet. What is the most likely cause of the problem?
The inside and outside interfaces have been configured backwards.
The NAT pool has been exhausted.
The wrong netmask was used on the NAT pool.
Access-list 1 has not been configured properly.
An administrator is trying to remove configurations from a switch. After using the command erase startup-config and reloading the switch, the administrator finds that VLANs 10 and 100 still exist on the switch. Why were these VLANs not removed?
These VLANs cannot be deleted unless the switch is in VTP client mode.
Because these VLANs are stored in a file that is called vlan.dat that is located in flash memory, this file must be manually deleted.
These VLANs are default VLANs that cannot be removed.
These VLANs can only be removed from the switch by using the no vlan 10 and no vlan 100 commands.
What is a disadvantage when both sides of a communication use PAT?
End-to-end IPv4 traceability is lost.
The flexibility of connections to the Internet is reduced.
The security of the communication is negatively impacted.
Host IPv4 addressing is complicated.
In which type of attack does a malicious node request all available IP addresses in the address pool of a DHCP server in order to prevent legitimate hosts from obtaining network access?
MAC address flooding
CAM table overflow
What is associated with link-state routing protocols?
Shortest-path first calculations
Low processor overhead
When does a switch use frame filtering?
The destination MAC address is for a host on a different network segment from the source of the traffic.
The destination MAC address is for a host with no entry in the MAC address table.
The destination MAC address is for a host on a network supported by a different router.
The destination MAC address is for a host on the same network segment as the source of the traffic.
How will a router handle static routing differently if Cisco Express Forwarding is disabled?
Ethernet multi-access interfaces will require fully specified static routes to avoid routing inconsistencies.
Serial point-to-point interfaces will require fully specified static routes to avoid routing inconsistencies.
Static routes that use an exit interface will be unnecessary.
It will not perform recursive lookups.
An administrator created and applied an outbound Telnet extended ACL on a router to prevent router-initiated Telnet sessions. What is a consequence of this configuration?
The ACL will work as desired as long as it is applied to the correct interface.
The ACL will not work as desired because an outbound ACL cannot block router-initiated traffic.
The ACL will work as long as it will be applied to all vty lines.
The ACL will not work because only standard ACLs can be applied to vty lines.
An administrator attempts to change the router ID on a router that is running OSPFv3 by changing the IPv4 address on the router loopback interface. Once the IPv4 address is changed, the administrator notes that the router ID did not change. What two actions can the administrator take so that the router will use the new IPv4 address as the router ID? (Choose two.)
Disable and re-enable IPv4 routing.
Shut down and re-enable the loopback interface.
Reboot the router.*Clear the IPv6 OSPF process.*
Copy the running configuration to NVRAM.
When routing a large number of VLANs, what are two disadvantages of using the router-on-a-stick inter-VLAN routing method rather than the multilayer switch inter-VLAN routing method? (Choose two.)
Router-on-a-stick requires subinterfaces to be configured on the same subnets.
Multiple SVIs are needed.
A dedicated router is required.* Multiple subinterfaces may impact the traffic flow speed.*
Router-on-a-stick requires multiple physical interfaces on a router.
Which characteristic is unique to EIGRP?
EIGRP supports classless routing.
EIGRP supports loop-free autosummarization.
EIGRP supports unequal-cost load balancing.
EIGRP supports both IPv4 and IPv6.
Which two methods can be used to provide secure management access to a Cisco switch? (Choose two.)
Configure the native VLAN to match the default VLAN.
Configure SSH for remote management.*Configure specific ports for management traffic on a specific VLAN.*
Configure all switch ports to a new VLAN that is not VLAN1
Configure all unused ports to a “black hole.”
A network administrator has just configured address translation and is verifying the configuration. What three things can the administrator verify? (Choose three.)
Address translation is working A standard access list numbered 1 was used as part of the configuration process Two types of NAT are enabled
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