Free 200-125 Sample Questions — CCNA Cisco Certified Network Associate

Which feature can you implement to reserve bandwidth for VoIP calls across the call path?

• A. PQ
• B. CBWFQ
• C. round robin
• D. RSVP

What are three benefits of implementing VLANs? (Choose three.)

• A. higher level of network security can be reached by separating sensitive data traffic from other network traffic
• B. more efficient use of bandwidth can be achieved allowing many physical groups to use the same network infrastructure
• C. more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure
• D. Broadcast storms can be mitigated by decreasing the number of broadcast domains, thus increasing their size
• E. Port-based VLANs increase switch-port use efficiency, thanks to 802.1Q trunks
• F. VLANs make it easier for IT staff to configure new logical groups, because the VLANs all belong to the same broadcast domain
• G. Broadcast storms can be mitigated by increasing the number of broadcast domains, thus reducing their size

Which command can you enter to view the ports that are assigned to VLAN 20?

• A. Switch#show ip interface vlan 20
• B. Switch#show vlan id 20
• C. Switch#show ip interface brief
• D. Switch#show interface vlan 20

Which command can you enter to determine whether serial interface 0/2/0 has been configured using HDLC encapsulation?

• A. router#show platform
• B. router#show interfaces Serial 0/2/0
• C. router#show ip interface s0/2/0
• D. router#show ip interface brief

What are two benefits of private IPv4 IP addresses? (Choose two.)

• A. They are routed to the Internet the same as public IP addresses
• B. They are less costly than public IP addresses
• C. They can be assigned to devices without Internet connections
• D. They eliminate the necessity for NAT policies
• E. They eliminate duplicate IP conflicts

How many bits are contained in each field of an IPv6 address?

• A. 24
• B. 4
• C. 8
• D. 16

What are three advantages of VLANs? (Choose three.)

• A. They establish broadcast domains in switched networks
• B. They provide a low-latency internetworking alternative to routed networks
• C. They utilize packet filtering to enhance network security
• D. They can simplify adding, moving, or changing hosts on the network
• E. They allow access to network services based on department, not physical location
• F. They provide a method of conserving IP addresses in large networks

Which two spanning-tree port states does RSTP combine to allow faster convergence? (Choose two.)

• A. blocking
• B. learning
• C. forwarding
• D. discarding
• E. listening AE

A network administrator is troubleshooting an EIGRP problem on a router and needs to confirm the IP addresses of the devices with which the router has established adjacency. The retransmit interval and the queue counts for the adjacent routers also need to be checked. What command will display the required information?

• A. Router# show ip eigrp neighbors
• B. Router# show ip eigrp interfaces
• C. Router# show ip eigrp adjacency
• D. Router# show ip eigrp topology

What will happen if a private IP address is assigned to a public interface connected to an ISP?

• A. conflict of IP addresses happens, because other public routers can use the same range
• B. Addresses in a private range will not be routed on the Internet backbone
• C. Only the ISP router will have the capability to access the public network
• D. The NAT process will be used to translate this address to a valid IP address

Which type of device can be replaced by the use of subinterfaces for VLAN routing?

• A. Layer 2 bridge
• B. Layer 2 switch
• C. Layer 3 switch
• D. router

Which two statements about IPv6 and routing protocols are true? (Choose two.)

• A. EIGRPv3 was developed to support IPv6 routing
• B. OSPFv3 was developed to support IPv6 routing
• C. Loopback addresses are used to form routing adjacencies
• D. EIGRP, OSPF, and BGP are the only routing protocols that support IPv6
• E. Link-local addresses are used to form routing adjacencies

During which phase of PPPoE is PPP authentication performed?

• A. the PPP Session phase
• B. Phase 2
• C. the Active Discovery phase
• D. the Authentication phase
• E. Phase 1

Which command can you enter to verify that a 128-bit address is live and responding?

• A. traceroute
• B. telnet
• C. ping
• D. ping ipv6

Which logging command can enable administrators to correlate syslog messages with millisecond precision?

• A. no logging console
• B. logging buffered 4
• C. no logging monitor
• D. service timestamps log datetime mscec
• E. logging host 10.2.0.21