CCNA 4 Midterm
Refer to the exhibit. Which route or routes will be advertised to the router ISP if autosummarization is enabled?
10.0.0.0/8
Refer to the exhibit. Which two networks contain feasible successors? (Choose two.)
192.168.71.0 10.44.100.252
What is the subnet address for the address 2001:DB8:BC15:A:12AB::1/64?
2001:DB8:BC15:A::0
What is the purpose of setting the native VLAN separate from data VLANs?
A separate VLAN should be used to carry uncommon untagged frames to avoid bandwidth contention on data VLANs.
Refer to the exhibit. NAT with overload is configured on router R1 and uses the NAT pool of addresses 209.165.201.9 through 209.165.201.10. What type of route would the ISP need in order for communication to occur between hosts in Company ABC and the Internet?
A static route from the ISP is needed that uses the network number 209.165.201.8 and the mask 255.255.255.252.
Which two components of a WAN would more likely be used by an ISP? (Choose two.)
CO toll network
What is an IPsec protocol that provides data confidentiality and authentication for IP packets?
ESP
Which range of link-local addresses can be assigned to an IPv6-enabled interface?
FEBF::/10
What field content is used by ICMPv6 to determine that a packet has expired?
Hop Limit field
Refer to the exhibit. The IPv6 access list LIMITED_ACCESS is applied on the S0/0/0 interface of R1 in the inbound direction. Which IPv6 packets from the ISP will be dropped by the ACL on R1?
ICMPv6 packets that are destined to PC1
What benefit does NAT64 provide?
It allows sites to connect IPv6 hosts to an IPv4 network by translating the IPv6 addresses to IPv4 addresses.
What is the most likely scenario in which the WAN interface of a router would be configured as a DHCP client to be assigned a dynamic IP address from an ISP?
It is a SOHO or home broadband router.
Refer to the exhibit. R1 is configured for NAT as displayed. What is wrong with the configuration?
NAT-POOL2 is not bound to ACL 1.
Which two statements about NetFlow are true? (Choose two.)
NetFlow can be used to create baseline documentation. NetFlow is a Cisco-specific feature that enables the collection of detailed traffic profiles.
A network contains multiple VLANs spanning multiple switches. What happens when a device in VLAN 20 sends a broadcast Ethernet frame?
Only devices in VLAN 20 see the frame.
Refer to the exhibit. Based on the output that is shown, what type of NAT has been implemented?
PAT using an external interface
What is the protocol that provides ISPs the ability to send PPP frames over DSL networks?
PPPoE
Refer to the exhibit. Which two statements describe the results of entering these commands? (Choose two.)
R1 will send system messages of levels 0 (emergencies) to level 4 (warnings) to a server. The syslog server has the IPv4 address 192.168.10.10.
A network administrator enters the command ipv6 router ospf 64 in global configuration mode. What is the result of this command?
The OSPFv3 process will be assigned an ID of 64.
Refer to the exhibit. A network administrator has attempted to implement a default route from R1 to the ISP and propagate the default route to EIGRP neighbors. Remote connectivity from the EIGRP neighbor routers to the ISP connected to R1 is failing. Based on the output from the exhibit, what is the most likely cause of the problem?
The command redistribute static has not been issued on R1.
What are two advantages of packet switching over circuit switching? (Choose two.)
The communication costs are lower. Multiple pairs of nodes can communicate over the same network channel.
Which two conditions would cause a router to drop a packet? (Choose two.)
The packet source address does not match the source as permitted in a standard inbound ACE. No routing table entry exists for the packet destination, but the packet matches a permitted address in an outbound ACL.
Which three statements describe the similarities between OSPFv2 and OSPFv3? (Choose three.)
They both are link-state protocols. They both share the concept of multiple areas. They both use the same DR/BDR election process.
A high school in New York (school A) is using videoconferencing technology to establish student interactions with another high school (school B) in Russia. The videoconferencing is conducted between two end devices through the Internet. The network administrator of school A configures the end device with the IP address 192.168.25.10. The administrator sends a request for the IP address for the end device in school B and the response is 192.168.25.10. The administrator knows immediately that this IP will not work. Why?
This is a private IP address.
Which two characteristics describe time-division multiplexing? (Choose two.)
Traffic is allocated bandwidth across a single wire based on preassigned time slots. Data capacity across a single link increases as bits from multiple sources are transmitted using interleaved slices of time.
Which security mode is the least secure choice when a home wireless router is configured?
WEP
Which type of long distance telecommunication technology provides point-to-point connections and cellular access?
WiMax
Which definition describes a supernet route?
a network address with a mask less than the classful mask
What is one advantage to designing networks in building block fashion for large companies?
failure isolation
Refer to the exhibit. The network engineer for the company that is shown wants to use the primary ISP connection for all external connectivity. The backup ISP connection is used only if the primary ISP connection fails. Which set of commands would accomplish this goal?
ip route 0.0.0.0 0.0.0.0 s0/0/0 ip route 0.0.0.0 0.0.0.0 s0/1/0 10
Fill in the blank. IPsec operates at the layer of the OSI model.
network
What are three benefits of using Frame Relay for WAN connectivity? (Choose three.)
one physical interface that can be used for several circuits mature technology reasonable cost
Refer to the exhibit. Which type of IPv6 static route is configured in the exhibit?
recursive static route
Which information does a switch use to populate the MAC address table?
the source MAC address and the incoming port
Why would a network administrator use the tracert utility?
to identify where a packet was lost or delayed on a network
When is a dial-up connection used to connect to an ISP?
when a regular telephone line is used
