Network administration questions.

Given that M(x) = x⁷ + x⁵ + x³ +x is transmitted using the standard CRC method. The generator polynomial is G(x) = x³ +x show the actual bit string transmitted .

The internet control message protocol (ICMP)

• Allows gateways to send error a control message to other gateways or hosts
• Provides communication between the internet protocol software on one machine and the internet protocol software on another
• Reports error conditions to the original source , the source must relate errors to individual application programs and take action to correct the problem
• All the above
• None of the above

Which of the following network devices would most  likely be installed to allow the company`s public IP to be shared and translated into local IPs for network devices ?

• Router
• Hub
• Repeater
• Switch

An administrator is setting up a security camera that will send the same feed to twelve of the twenty workstations on the network. Which of the following addressing schemes was designed for this scenario?

• Multicast
• Unicast
• Broadcast
• Peer-to-peer

Which of the following device is used to connect two systems, especially if the systems use different protocols?

• Hub
• Bridge
• Gateway
• Repeater
• None of the above

How many hosts are attached to each of the local area network s at your site?

• 128
• 254
• 256
• 64

Which of the following provides a storage mechanism for incoming mail but does not allow a user to download messages selectively?

• SMTP
• DHCP
• IMAP
• POP3

Internet works on ------

• Packet switching
• Circuit switching
• Both A and B
• None of the above

Servers handle requests for other domains

• Directly
• By contacting remote DNS server
• It is not possible
• None of the above

Bluetooth is a wireless technology for --------

• Local area network
• Personal area network
• Both A and B
• None of the mentioned