CCNA Practice Final Exam 1
Port Aggregation Protocol Modes
PAgP - Cisco Proprietary On - Etherchannel without negotiation Desirable - Actively asks Auto - Passively waits
Which protocol in its default configuration downloads e-mail messages to the client computer and deletes them from the server?
POP3
Best path to root bridge
Path determined by summing port costs from each switch port
A company has a web server that must be accessible to both external and internal clients. Which security policy best practice should be followed to maximize security of the server?
Place the web server in a DMZ
The area covered by a single AP is known as what?
basic service set
A user is unable to send e-mail. While troubleshooting this problem, the network technician first verifies the physical connectivity of cables. Which troubleshooting approach is being followed?
bottom-up
When acting as a DHCP server, an integrated router can provide what three types of information to a client? (Choose three.)
default gateway, dynamic IP address, DNS server address
Etherchannel setup
interface range F0/1 - 2 channel-group <#> mode <on/desirable/active/auto/passive> interface port-channel 1 switchport mode trunk switchport trunk allowed vlan <#s>
eigrp summarization
ip summary-address eigrp <as-number> <network-address> <subnet mask>
OSPF Link State Advertisement
1 - Router (All routers, within area) 2 - Network (DR, to routers within NBMA) 3 - Summary (ABR, advertise networks in other areas) 4 - Summary (ABR when ASBR is in area) 5 - AS External (ASBR, advertise routes to networks outside OSPF area)
Which of the following are the address ranges of the private IP addresses? (Choose three.)
10.0.0.0 to 10.255.255.255, 172.16.0.0 to 172.31.255.255, 192.168.0.0 to 192.168.255.255
What is the default subnet mask for an IP address of 64.100.19.14?
255.0.0.0
default switch priority
32768
STP Port States
Blocking - Receives frames / does not forward Listening - Can participate in Frame Forwarding Learning - Prepares to participate / Learns MACs Forwarding - Part of active topology Disabled - Shutdown
A host sent a message that all other hosts on the switched local network received and processed. What type of domain are all these hosts a part of?
Broadcast domain
Wireless Frames
Control - Facilitate frame exchange (CSMA/CA - CTS/RTS) Management - Find / Authenticate / Associate with AP Data - Payload
OSPF States
Down Init Two Way ExStart Exchange Loading Full
GLBP
Gateway Load Balancing Protocol Cisco proprietary FHRP with load balancing
HSRP
Hot Standby Routing Protocol Cisco First Hop Redundancy Protocol to allow for transparent failover
A network technician is required to provide access to the Internet for a large company. What is needed to accomplish this task?
ISP
Where do ISPs get the public addresses that they assign to end users?
ISPs obtain address blocks from registry organizations
What is the purpose of the ipconfig /release command?
It forces a client to give up its current IP address.
What advantage does a peer-to-peer network have over a client-server network?
It increases scalability.
Link Aggregation Protocol Modes
LACP - Link Aggregation Control Protocol On - Etherchannel without negotiation Active Passive
Layer 1 redundancy issues
MAC Database Instability Broadcast Storms Duplicate Unicast Frames
A network technician suspects that malware on a user PC is opening multiple TCP connections to a specific foreign host address. Which Windows command line utility can be used to confirm the multiple TCP connections?
Netstat
OSPF Election Process
Only occurs in multiaccess networks
Reported Distance Feasibility Condition Feasible Successor
RD - EIGRP neighbors distance to same destination FC - when neighbors reported distance is less than routers feasible distance Feasible Successor - If the neighboring routers meets the FC
Because of an increasing number of users, bandwidth per user on a WLAN has decreased to a point where users are complaining about poor performance. What can be done to improve the user experience?
Reduce the number of devices using each channel
STP Port Roles
Root - Switch closest to root bridge Designated - All active non root ports Alternate/Backup - Blocking Disable - Shutdown
spanning-tree vlan <vlan id> root primary
Sets priority to 24,576 or highest multiple of 4096 less than the lowest bridge priority
Successor Feasible Distance
Successor - Neighboring router with least cost distance to destination Feasible Distance - lowest calculated metric to reach destination
Root Port Election
Switch with lowest Bridge ID (BID) becomes root.
What is an advantage of selecting an operating system that has a commercial license over one with a GPL license?
The commercial license-based operating system provides structured support.
Refer to the exhibit. Assume that the command output is from a wireless DHCP client that is connected to a Linksys integrated router. What can be deduced from the output?
The wireless connection is operational
OSPF Summary Route
Use on ABR area <area id> range <address> <mask>
VRRP
Virtual Router Redundancy Protocol Non proprietary election protocol
What layer is the first point of entry for a host into the network?
access layer
What does the term "attenuation" mean in data communication?
loss of signal strength as distance increases
When terminating UTP cabling, why is it important to untwist only a small amount of each wire pair?
minimizes crosstalk
Calculate OSPF Adjacencies
n(n-1)/2
OSPF verification commands
show ip ospf interface - state type, DR/BDR, neighbors show ip protocols show ip ospf neighbor show ip ospf interface <x> show ip ospf
verify HSRP
show standby check state / virtual IP / standby router / Group name
What are two best practices that are used when configuring a small home WLAN? (Choose two.)
the encryption of the SSID, the use of pre-shared keys
What is the purpose of creating a DMZ during network firewall implementation?
to allow for a publicly accessible zone without compromising the internal network
What is the function of CSMA/CA on a wireless Ethernet network?
to prevent collisions