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WorksheetsСеть 4
Total questions: 27
Worksheet time: 5hrs 30mins
A router boots and enters setup mode. What is the reason for this?
The IOS image is corrupt.
Cisco IOS is missing from flash memory.
The configuration file is missing from NVRAM.
The POST process has detected hardware failure.
Which command is used to encrypt all passwords in a router configuration file?
Router_A (config) # enable secret <password>
Router_A (config) # service password-encryption
Router_A (config) # enable password <password>
Router_A (config) # encrypt password
Company policy requires using the most secure method to safeguard access to the privileged exec and configuration mode on the routers. The privileged exec password is trustknow1. Which of the following router commands achieves the goal of providing the highest level of security?
secret password trustknow1
enable password trustknow1
service password-encryption
enable secret trustknow1
What will be the response from the router after the command, "router(config)# hostname portsmouth" is entered?
portsmouth#
portsmouth(config)#
invalid input detected
router(config-host)#
hostname = portsmouth
portsmouth#
An administrator is configuring a new router to permit out-of-band management access. Which set of commands will allow the required login using a password of cisco?
Router(config)# line vty 0 4
Router(config-line)# password manage
Router(config-line)# exit
Router(config)# enable password cisco
Router(config)# line vty 0 4
Router(config-line)# password cisco
Router(config-line)# login
Router(config)# line console 0
Router(config-line)# password cisco
Router(config-line)# login
Router(config)# line console 0
Router(config-line)# password cisco
Router(config-line)# exit
Router(config)# service password-encryption
Which command can be used on a Cisco router to display all interfaces, the IPv4 address assigned, and the current status?
show ip interface brief
ping
show ip route
show interface fa0/1
Which CLI mode allows users to access all device commands, such as those used for configuration, management, and troubleshooting?
User EXEC mode
Privileged EXEC mode
Global configuration mode
Interface configuration mode
What is the purpose of the startup configuration file on a Cisco router?
To facilitate the basic operation of the hardware components of a device
To contain the commands that are used to initially configure a router on startup
To contain the configuration commands that the router IOS is currently using
To provide a limited backup version of the IOS, in case the router cannot load the full featured IOS
Which characteristic describes the default gateway of a host computer?
The logical address of the router interface on the same network as the host computer
The physical address of the switch interface connected to the host computer
The physical address of the router interface on the same network as the host computer
The logical address assigned to the switch interface connected to the router
What is the purpose of the banner motd command?
It configures a message that will identify printed documents to LAN users.
It is a way that routers communicate the status of their links with one another.
It provides an easy way of communicating with any user attached to a router's LANs.
It provides a way to make announcements to those who log in to a router.
A technician is configuring a router to allow for all forms of management access. As part of each different type of access, the technician is trying to type the command login. Which configuration mode should be entered to do this task?
User executive mode
Global configuration mode
Any line configuration mode
Privileged EXEC mode
What is stored in the NVRAM of a Cisco router?
The Cisco IOS
The running configuration
The bootup instructions
The startup configuration
Which statement regarding the service password-encryption command is true?
It is configured in privileged EXEC mode.
It encrypts only line mode passwords.
As soon as the service password-encryption command is entered, all currently set passwords formerly displayed in plain text are encrypted.
To see the passwords encrypted by the service password-encryption command in plain text, issue the no service password-encryption command.
What is the prefix length notation for the subnet mask 255.255.255.224?
/25
/26
/27
/28
How many valid host addresses are available on an IPv4 subnet that is configured with a /26 mask?
254
190
192
62
64
Which subnet mask would be used if 5 host bits are available?
255.255.255.0
255.255.255.128
255.255.255.224
255.255.255.240
A network administrator subnets the 192.168.10.0/24 network into subnets with /26 masks. How many equal-sized subnets are created?
1
2
4
8
64
What subnet mask is represented by the slash notation /20?
255.255.255.248
255.255.224.0
255.255.240.0
255.255.255.0
255.255.255.192
Which statement is true about variable-length subnet masking?
Each subnet is the same size.
The size of each subnet may be different, depending on requirements.
Subnets may only be subnetted one additional time.
Bits are returned, rather than borrowed, to create additional subnets.
Why does a Layer 3 device perform the ANDing process on a destination IP address and subnet mask?
To identify the broadcast address of the destination network
To identify the host address of the destination host
To identify faulty frames
To identify the network address of the destination network
How many usable IP addresses are available on the 192.168.1.0/27 network?
256
254
62
30
32
Which subnet mask would be used if exactly 4 host bits are available?
255.255.255.224
255.255.255.128
255.255.255.240
255.255.255.248
If a network device has a mask of /26, how many IP addresses are available for hosts on this network?
64
30
62
32
16
What does the IP address 172.17.4.250/24 represent?
Network address
Multicast address
Host address
Broadcast address
If a network device has a mask of /28, how many IP addresses are available for hosts on this network?
256
254
62
14
16
What is the purpose of the subnet mask in conjunction with an IP address?
To uniquely identify a host on a network
To identify whether the address is public or private
To determine the subnet to which the host belongs
To mask the IP address to outsiders
A network administrator is variably subnetting a network. The smallest subnet has a mask of 255.255.255.224. How many usable host addresses will this subnet provide?
2
6
14
30
62
