Question: The network layer is responsible for transferring packets of data from the:
Answer Choices:
Source computer to the destination computer on the same network.
Source computer to the destination computer on adjacent networks.
Source computer to the destination computer via one of more networks.
Source computer to the Internet.
Answer: Source computer to the destination computer via one of more networks.
Question: In dynamic allocation, IP addresses are assigned by DHCP:
Answer Choices:
Automatically and forever, based on a first-come-first-serve basis, from a pool of addresses
Manually and forever on a per-host basis
None of the above
Automatically and for a short period, based on a first-come-first-serve basis, from a pool of addresses
Answer: Automatically and for a short period, based on a first-come-first-serve basis, from a pool of addresses
Question: The IP address 10000011 11110101 10110101 11001111 is written in dotted decimal notation as:
Answer Choices:
193.234.186.206
193.224.176.205
137.237.166.195
137.247.170.193
Answer: 193.245.181.207
Question: The binary representation of the decimal number 231 is
Answer Choices:
11100011
11100111
11001111
11000011
Answer: 11100111
Question: Compared to routers, switches typically cannot:
Answer Choices:
Handle broadcasts
Select the correct path from multiple available paths
Locate the destination host on the network
Transfer data
Answer: Handle broadcasts
Question: Routing tables maintain routes as:
Answer Choices:
A sequence of URLs
A sequence of router IDs
A sequence of AS numbers
A sequence of IP addresses
Answer: A sequence of IP addresses
Question: An organization with a class B network address uses 6 bits for the subnet ID. Each subnet in this organization can have ______ hosts.
Answer Choices:
2,048
512
128
256
Answer: 2,048
Question: An organization with a class B network address has 50 subnets. Each subnet in this organization can have at most ______ hosts.
Answer Choices:
256
128
512
1024
Answer: 1024
Question: SMTP is used to:
Answer Choices:
Manipulate the contents of the mailbox
Access web pages
Deliver email to the destination mail server
Delete mail in the mailbox
Answer: Deliver email to the destination mail server
Question: HTTP is an application layer protocol that enables the transfer of:
Answer Choices:
Only text files and images between computers
Only text files between computers
Pairs of files between computers
Files of any type between computers
Answer: Files of any type between computers
Question: Echo is not a useful error detection technique in computer networking because:
Answer Choices:
Errors may cancel out during the echo
It is complex to use
It is difficult to implement
It is time consuming
Answer: Errors may cancel out during the echo
Question: The disadvantage of address classes was that:
Answer Choices:
It could support network of different sizes.
It wanted too many IP addresses, particularly among the largest networks.
It was too easy to obtain an IP address block.
None of the above.
Answer: It wanted too many IP addresses, particularly among the largest networks.
Question: In the sliding windows mechanism for flow control, the ____ before waiting for an acknowledgment.
Answer Choices:
Receiver acknowledge data one segment at a time
Receiver processes as much data as specified by the sender in the window size field
Sender sends as much data as specified by the receiver in the window size field
Sender transmits data one segment at a time
Answer: Sender sends as much data as specified by the receiver in the window size field
Question: In interior routing protocols, routers typically exchange routing information with:
Answer Choices:
Only the neighboring routers
None of the above
All routers on the same network
Only routers outside the network
Answer: All routers on the same network