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2021 Nov ccna 100-101 dumps:

Q71. Refer to the exhibit. 

Assume that all router interfaces are operational and correctly configured. In addition, assume that OSPF has been correctly configured on router R2. How will the default route configured on R1 affect the operation of R2? 

A. Any packet destined for a network that is not directly connected to router R2 will be dropped immediately. 

B. Any packet destined for a network that is not referenced in the routing table of router R2 will be directed to R1. R1 will then send that packet back to R2 and a routing loop will occur. 

C. Any packet destined for a network that is not directly connected to router R1 will be dropped. 

D. The networks directly connected to router R2 will not be able to communicate with the 172.16.100.0, 172.16.100.128, and 172.16.100.64 subnetworks. 

E. Any packet destined for a network that is not directly connected to router R2 will be dropped immediately because of the lack of a gateway on R1. 

Answer: B 


Q72. Which two options will help to solve the problem of a network that is suffering a broadcast storm? (Choose two.) 

A. a bridge 

B. a router 

C. a hub 

D. a Layer 3 switch 

E. an access point 

Answer: BD 


Q73. Which commands are required to properly configure a router to run OSPF and to add network 192.168.16.0/24 to OSPF area 0? (Choose two.) 

A. Router(config)# router ospf 0 

B. Router(config)# router ospf 1 

C. Router(config)# router ospf area 0 

D. Router(config-router)# network 192.168.16.0 0.0.0.255 0 

E. Router(config-router)# network 192.168.16.0 0.0.0.255 area 0 

F. Router(config-router)# network 192.168.16.0 255.255.255.0 area 0 

Answer: BE 


Q74. The command ip route 192.168.100.160 255.255.255.224 192.168.10.2 was issued on a router. No routing protocols or other static routes are configured on the router. Which statement is true about this command? 

A. The interface with IP address 192.168.10.2 is on this router. 

B. The command sets a gateway of last resort for the router. 

C. Packets that are destined for host 192.168.100.160 will be sent to 192.168.10.2. 

D. The command creates a static route for all IP traffic with the source address 192.168.100.160. 

Answer: C 


Q75. ROUTER# show ip route 

192.168.12.0/24 is variably subnetted, 9 subnets, 3 masks C 192.168.12.64 /28 is directly connected, Loopback1 C 192.168.12.32 /28 is directly connected, Ethernet0 C 192.168.12.48 /28 is directly connected, Loopback0 O 192.168.12.236 /30 [110/128] via 192.168.12.233, 00:35:36, Serial0 C 192.168.12.232 /30 is directly connected, Serial0 O 192.168.12.245 /30 [110/782] via 192.168.12.233, 00:35:36, Serial0 O 192.168.12.240 /30 [110/128] via 192.168.12.233, 00:35:36, Serial0 O 192.168.12.253 /30 [110/782] via 192.168.12.233, 00:35:37, Serial0 O 192.168.12.249 /30 [110/782] via 192.168.12.233, 00:35:37, Serial0 O 192.168.12.240/30 [110/128] via 192.168.12.233, 00:35:36, Serial 0 

To what does the 128 refer to in the router output above? 

A. OSPF cost 

B. OSPF priority 

C. OSPF hop count 

D. OSPF ID number 

E. OSPF administrative distance 

Answer: A 


Avant-garde 100-101 icnd1 practice test:

Q76. Refer to the exhibit. 

A network administrator is troubleshooting a connectivity problem on the serial interfaces. The output from the show interfaces command on both routers shows that the serial interface is up, line protocol is down. Given the partial output for the show running-config in the exhibit, what is the most likely cause of this problem? 

A. The serial cable is bad. 

B. The MTU is incorrectly configured. 

C. The Layer 2 framing is misconfigured. 

D. The IP addresses are not in the same subnet. 

Answer: C 


Q77. How does a switch differ from a hub? 

A. A switch does not induce any latency into the frame transfer time. 

B. A switch tracks MAC addresses of directly-connected devices. 

C. A switch operates at a lower, more efficient layer of the OSI model. 

D. A switch decreases the number of broadcast domains. 

E. A switch decreases the number of collision domains. 

Answer: B 


Q78. What are two benefits of using a single OSPF area network design? (Choose two.) 

A. It is less CPU intensive for routers in the single area. 

B. It reduces the types of LSAs that are generated. 

C. It removes the need for virtual links. 

D. It increases LSA response times. 

E. It reduces the number of required OSPF neighbor adjacencies. 

Answer: BC 


Q79. What are two common TCP applications? (Choose two.) 

A. TFTP 

B. SMTP 

C. SNMP 

D. FTP 

E. DNS 

Answer: BD 


Q80. If an Ethernet port on a router was assigned an IP address of 172.16.112.1/20, what is the maximum number of hosts allowed on this subnet? 

A. 1024 

B. 2046 

C. 4094 

D. 4096 

E. 8190 

Answer: C