CYB121 - Routing and Switching Essentials - Final Exam Study Guide
Compared with dynamic routes, what are two advantages of using static routes on a router? (Choose two.)
They improve network security. They use fewer router resources.
Refer to the exhibit. An administrator is examining the message in a syslog server. What can be determined from the message?
This is a notification message for a normal but significant condition.
A network engineer has created a standard ACL to control SSH access to a router. Which command will apply the ACL to the VTY lines?
access-class 11 in.
A network administrator is designing an ACL. The networks 192.168.1.0/25, 192.168.0.0/25, 192.168.0.128/25, 192.168.1.128/26, and 192.168.1.192/26 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?
0.0.1.255
Refer to the exhibit. What is the administrative distance value that indicates the route for R2 to reach the 10.10.0.0/16 network?
1
Refer to the exhibit. Which highlighted value represents a specific destination network in the routing table?
172.16.100.128
A network administrator is configuring an ACL with the command access-list 10 permit 172.16.32.0 0.0.15.255. Which IPv4 address matches the ACE?
172.16.36.255
A network administrator is configuring an ACL with the command access-list 10 permit 172.16.32.0 0.0.15.255. Which IPv4 address matches the ACE?
172.16.47.254
Refer to the exhibit. Assuming that the routing tables are up to date and no ARP messages are needed, after a packet leaves H1, how many times is the L2 header rewritten in the path to H2?
2
Refer to the exhibit. NAT is configured on Remote and Main. The PC is sending a request to the web server. What IPv4 address is the source IP address in the packet between Main and the web server?
203.0.113.5
Refer to the exhibit. A network engineer is preparing to upgrade the IOS system image on a Cisco 2901 router. Based on the output shown, how much space is available for the new image?
221896413 bytes
What network prefix and prefix-length combination is used to create a default static route that will match any IPv6 destination?
::/0
Which statement describes a route that has been learned dynamically?
It is automatically updated and maintained by routing protocols.
What VLANs are allowed across a trunk when the range of allowed VLANs is set to the default value?
All VLANS will be allowed across the trunk.
Refer to the exhibit. Based on the exhibited configuration and output, what are two reasons VLAN 99 missing? (Choose two.)
Because VLAN 99 needs to be entered as a VLAN under an interface before it can become an active interface and because the VLAN 99 has not been manually entered into the VLAN database with the vlan 99 command.
Refer to the exhibit. R1 was configured with the static route command ip route 209.165.200.224 255.255.255.224 S0/0/0 and consequently users on network 172.16.0.0/16 are unable to reach resources on the Internet. How should this static route be changed to allow user traffic from the LAN to reach the Internet?
Change the destination network and mask to 0.0.0.0 0.0.0.0.
A Cisco Catalyst switch has been added to support the use of multiple VLANs as part of an enterprise network. The network technician finds it necessary to clear all VLAN information from the switch in order to incorporate a new network design. What should the technician do to accomplish this task?
Delete the startup configuration and the vlan.dat file in the flash memory of the switch and reboot the switch
Which statement is correct about Ethernet switch frame forwarding decisions?
Frame forwarding decisions are based on MAC address and port mappings in the CAM table.
Which characteristic describes cut-through switching?
Frames are forwarded without any error checking.
Refer to the exhibit. What protocol should be configured on SW-A Port 0/1 if it is to send traffic from multiple VLANs to switch SW-B?
IEEE 802.1Q
A network administrator is configuring a new Cisco switch for remote management access. Which three items must be configured on the switch for the task? (Choose three.)
IP address, vty lines and default gateway.
Which type of traffic would most likely have problems when passing through a NAT device?
IPsec
What benefit does NAT64 provide?
It allows sites to connect IPv6 hosts to an IPv4 network by translating the IPv6 addresses to IPv4 addresses.
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 VLAN number.
Refer to the exhibit. A network administrator has configured R2 for PAT. Why is the configuration incorrect?
NAT-POOL2 is bound to the wrong ACL.
Which two statements are correct if a configured NTP master on a network cannot reach any clock with a lower stratum number? (Choose two.)
Other systems will be willing to synchronize to that master using NTP and the NTP master will claim to be synchronized at the configured stratum number.
Refer to the exhibit. Based on the output that is shown, what type of NAT has been implemented?
PAT using an external interface.
When a customer purchases a Cisco IOS 15.0 software package, what serves as the receipt for that customer and is used to obtain the license as well?
Product Activation Key
Which command will create a static route on R2 in order to reach PC B?
R2(config)# ip route 172.16.2.0 255.255.255.0 172.16.3.1
Refer to the exhibit. All hosts and router interfaces are configured correctly. Pings to the server from both H1 and H2 and pings between H1 and H2 are not successful. What is causing this problem?
RIPv2 is misconfigured on router R2.
Refer to the exhibit. Which route was configured as a static route to a specific network using the next-hop address?
S 192.168.2.0/24 [1/0] via 172.16.2.2
A network technician has been asked to secure all switches in the campus network. The security requirements are for each switch to automatically learn and add MAC addresses to both the address table and the running configuration. Which port security configuration will meet these requirements?
Sticky secure MAC addresses.
Refer to the exhibit. A network engineer is examining a configuration implemented by a new intern who attached an IP phone to a switch port and configured the switch. Identify the issue, if any, with the configuration.
The configuration is correct.
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 inside global address is not on the same subnet as the ISP.
Refer to the exhibit. Which two statements are correct based on the output as shown in the exhibit? (Choose two.)
The output is the result of the show ip nat translations command and the host with the address 209.165.200.235 will respond to requests by using a source address of 192.168.10.10.
A network administrator adds the default-information originate command to the configuration of a router that uses RIP as the routing protocol. What will result from adding this command?
The router will propagate a static default route in its RIP updates, if one is present.
What is a result of connecting two or more switches together?
The size of the broadcast domain is increased.
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?
The state is not maintained by the DHCPv6 server under stateless DHCPv6 operation.
Which statement describes a characteristic of the extended range VLANs that are created on a Cisco 2960 switch?
They are not stored in the vlan.dat file.
Compared with dynamic routes, what are two advantages of using static routes on a router? (Choose two.)
They improve network security and they use fewer router resources.
Which route will a router use to forward an IPv4 packet after examining its routing table for the best match with the destination address?
a level 1 ultimate route
Employees of a company connect their wireless laptop computers to the enterprise LAN via wireless access points that are cabled to the Ethernet ports of switches. At which layer of the three-layer hierarchical network design model do these switches operate?
access
What is the name of the layer in the Cisco borderless switched network design that would have more switches deployed than other layers in the network design of a large organization?
access
The computers used by the network administrators for a school are on the 10.7.0.0/27 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.)
access-list 5 permit 10.7.0.0 0.0.0.31 and access-class 5 in.
What is indicated by the M in the Cisco IOS image name c1900-universalk9-mz.SPA.153-3.M.bin?
an extended maintenance release.
A network administrator is configuring port security on a Cisco switch. When a violation occurs, which violation mode that is configured on an interface will cause packets with an unknown source address to be dropped with no notification sent?
protect
What is a characteristic of the distribution layer in the three layer hierarchical model?
provides access to the rest of the network through switching, routing, and network access policies
What is a basic function of the Cisco Borderless Architecture access layer?
provides access to the user.
On which two routers would a default static route be configured? (Choose two.)
edge router connection to the ISP and stub router connection to the rest of the corporate or campus network.
Which type of static route is configured with a greater administrative distance to provide a backup route to a route learned from a dynamic routing protocol?
floating static route
Refer to the exhibit. Which three hosts will receive ARP requests from host A, assuming that port Fa0/4 on both switches is configured to carry traffic for multiple VLANs? (Choose three.)
hosts C, D and F.
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
Which set of commands will configure a router as a DHCP server that will assign IPv4 addresses to the 192.168.100.0/23 LAN while reserving the first 10 and the last addresses for static assignment?
ip dhcp excluded-address 192.168.100.1 192.168.100.10 ip dhcp excluded-address 192.168.101.254 ip dhcp pool LAN-POOL-100 network 192.168.100.0 255.255.254.0 default-router 192.168.100.1
A college marketing department has a networked storage device that uses the IP address 10.18.7.5, 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 209.165.200.225/30. The IP NAT pool currently uses the IP addresses ranging from 209.165.200.228-236. Which configuration would the network administrator add to allow this device to be accessed by the marketing personnel from home?
ip nat inside source static tcp 10.18.7.5 443 209.165.200.225 443 ip nat inside source static udp 10.18.7.5 4365 209.165.200.225 4365
Refer to the exhibit. Currently router R1 uses an EIGRP route learned from Branch2 to reach the 10.10.0.0/16 network. Which floating static route would create a backup route to the 10.10.0.0/16 network in the event that the link between R1 and Branch2 goes down?
ip route 10.10.0.0 255.255.0.0 209.165.200.225 100
A router has used the OSPF protocol to learn a route to the 172.16.32.0/19 network. Which command will implement a backup floating static route to this network?
ip route 172.16.32.0 255.255.224.0 S0/0/0 200
Refer to the exhibit. Which statement shown in the output allows router R1 to respond to stateless DHCPv6 requests?
ipv6 nd other-config-flag
A network administrator reviews the routing table on the router and sees a route to the destination network 172.16.64.0/18 with a next-hop IP address of 192.168.1.1. What are two descriptions of this route? (Choose two.)
level 2 child route and ultimate route.
A network engineer is interested in obtaining specific information relevant to the operation of both distribution and access layer Cisco devices. Which command provides common information relevant to both types of devices?
show cdp neighbors
Which commands are used to re-enable a port that has been disabled as a result of a port security violation?
shutdown no shutdown
Which two factors are important when deciding which interior gateway routing protocol to use? (Choose two.)
speed of covergence and scalability.
Which switching method drops frames that fail the FCS check?
store-and-forward switching
Two employees in the Sales department work different shifts with their laptop computers and share the same Ethernet port in the office. Which set of commands would allow only these two laptops to use the Ethernet port and create violation log entry without shutting down the port if a violation occurs?
switchport mode access switchport port-security switchport port-security maximum 2 switchport port-security mac-address sticky switchport port-security violation restrict
What is used in the EUI-64 process to create an IPv6 interface ID on an IPv6 enabled interface?
the MAC address of the IPv6 enabled interface
Which information does a switch use to populate the MAC address table?
the source MAC address and the incoming port
What is the effect of configuring the ipv6 unicast-routing command on a router?
to enable the router as an IPv6 router
What are three functions provided by the syslog service? (Choose three.)
to gather logging information for monitoring and troubleshooting, to select the type of logging information that is captured and to specify the destinations of captured messages
What are three functions provided by the syslog service? (Choose three.)
to gather logging information for monitoring and troubleshooting, to select the type of logging information that is captured and to specify the destinations of captured messages.
What is the reason why the DHCPREQUEST message is sent as a broadcast during the DHCPv4 process?
to notify other DHCP servers on the subnet that the IP address was leased
What isthe reason why the DHCPREQUEST message is sent as a broadcast during the DHCPv4 process?
to notify other DHCP servers on the subnet that the IP address was leased
Which type of traffic is designed for a native VLAN?
untagged
In what situation would a Layer 2 switch have an IP address configured
when the Layer 2 switch needs to be remotely managed
