TCP / IP Test

TCP / IP Test

What is the purpose of the metric value in a routing tabled?

a. It specifies the number of entries in the routing table

b. It specifies the IP address of the router

c. It specifies the default gateway address

d. It is used to find the best route to the desired network

e. It specifies the subnet mask

You have four Class C network addresses:

203.200.5.0, 203.200.6.0, 203.200.7.0 and 203.200.8.0

You want to combine these addresses into one logical network to increase the host IDs that you can have on one subnet. Which subnet mask should you assign?

a. 255.255.252.0

b. 255.255.254.0

c. 255.255.255.252 d. 255.255.255.254

e. 255.255.0.0

Which of the following Protocols is used as a security Protocol and is also one of the secure encryption systems used in communication?

a. SMTP

b. Kerberos

c. TFTP

d. DNS

Which of the following is a valid host IP address?

a. 200.100.100.31/27

b. 200.100.100.32/26

c. 200.100.100.40/29

d. 200.100.100.51/30

Which of the following Protocols use port number 25?

a. TFTP

b. POP3

c. SMTP

d. HTTP

What TCP/IP configuration settings are required for a computer to be able to communicate outside of its local subnets?

a. The IP address of the computer outside the subnet

b. A unique IP address, a subnet mask and the IP address of a default gateway

c. The IP address of the default gateway

d. A custom subnet mask

e. The physical address of the destination computer

What is the binary value of 157?

a. 11000111

b. 10111001

c. 11100011

d. 10011101

What does the HOSTS file contain?

a. IP addresses and NetBIOS names

b. Physical addresses of each host

c. IP addresses of each host

d. IP address-to-NetBIOS name mappings

e. An entry for each host's IP address followed by the host name

You have a Class B network and you plan to break it up into seven subnets. One subnet will be connected to the Internet but you want all computers to have access to the Internet. How should you assign the subnet mask on the router for the networks?

a. By using a default subnet mask

b. By assigning a subnet mask of 0.0.0.0

c. By assigning a subnet mask of 255.255.255.0

d. By assigning a subnet mask that has the IP address of the router

e. By creating a custom subnet mask

What is the binary value of hex 9F?

a. 10011111

b. 10111000

c. 11110001

d. 10001111

Which protocol matches the remote host's physical address to a given IP address?

a. TCP

b. IP

c. ARP

d. UDP

e. ICMP

How can you prevent a DHCP server from assigning an IP address to a DHCP client when that address is within the range of addresses defined in a DHCP scoped?

a. Deny the request

b. Redefine the DHCP scope

c. Increase the range of IP addresses

d. Create a client reservation for future reference

e. Create an exclusion range containing the IP address

TCP/IP, what is the Windowing mechanism used for?

a. It performs error checking

b. It enables the lost segments to be detected and retransmitted

c. It enables TCP to control the flow of data

d. It appends a header to the data that is received

e. It establishes a session

On which layer of OSI (Open Systems Interconnection) model do TCP and UDP work?

a. Presentation Layer

b. Network Layer

c. Physical Layer

d. Transport Layer

How many bits are used to represent an IPv4 address?

a. 8

b. 16

c. 24

d. 32

e. 128

How does ARP work when attempting to resolve the IP address of a destination host located on a different subnet?

a. By sending an ARP broadcast requesting the physical address of the destination host

b. By sending an ARP broadcast requesting the physical address of the router

c. By sending an ARP broadcast for the IP address it is attempting to use

d. By sending an ARP request to the default gateway

e. By sending an ARP request to the DHCP server on the remote subnet

What is the network ID of IP address 172.30.60.0/20?

a. 172.30.16.0

b. 172.30.48.0

c. 172.30.32.0

d. 172.30.0.0

What is the maximum number of valid IP addresses in a class C network?

a. 256

b. 512

c. S5536

d. 254

After a host name is resolved to an IP address, what does a local host need to do next to communicate with the target host if the target host resides on the same subnets.

a. Send an ARP broadcast to the router

b. Send an ARP broadcast to the DHCP server and the local subnet

c. Resolve the IP address to a physical address using ARP

d. Update the routing table

e. Scan the local LMHOSTS file for the requested name

What are some of the keywords that can be included in your LMHOSTS file?

a. #HOSTS

b. #LM

c. #FIRST

d. #MH

e. #PRE

What is the default time-to-live (TTL) value for an entry in the ARP cache?

a. 30 seconds

b. 60 seconds

c. 2 minutes

d. 90 seconds

e. 1 minute

f. Depends on OS

Which of the following is a universal and uniform numeric identifier for each computer on the network?

a. IP address

b. Physical address

c. ARP

d. Domain Name System

e. RARP

What is the binary value of hex BF?

a. 10100000

b. 10111111

c. 11111000

d. 00111011

What is the class of IP address 128.10.15.24?

a. Class A

b. Class B

c. Class C

d. Class D

Which class address has the beginning range of 192.0.0.1 and the ending range of 223.255.255.254?

a. Class A

b. Class B

c. Class C

d. Class D

e. Class E

To which subnet does the IP address 10.120.100.255/18 belong to?

a. 10.120.96.0

b. 10.120.100.0

c. 10.120.64.0

d. 10.0.0.0

You have a Class A network address with 60 subnets. You need to add 40 new subnets in the next two years and still allow for the largest possible number of host IDs per subnet. Which subnet mask should you assign?

a. 255.240.0.0

b. 255.248.0.0

c. 255.252.0.0

d. 255.254.0.0

e. 255.0.0.0

Assuming that none of the hosts has cached the entries, how many ARP broadcasts would be required for a host on one subnet to communicate with a host on a remote subnet that is separated by a single router?

a. 0

b. 1

c. 2

d. 3

e. 4

State whether true or false.

TCP is less reliable but faster than UDP.

a. True

b. False

If UDP receives datagrams that are not in a sequence, what will it do?

a. It will arrange them in a sequence using sequence numbers

b. It will request source host to resend datagrams

c. It will drop datagrams that are not in sequence

d. None of the above

Which Protocol uses port number no 21?

a. FTP

b. SMTP

c. Telnet

d. HTTP

When is supernetting required?

a. When the host address should not be partitioned for the purpose of sub netting

b. When a single subnet needs more host IDs than provided by the class of address

c. When a host ID has to be divided into too parts

d. When network performance needs to be improved

e. When a subnet needs to be isolated

Which one of the following addresses can be used as a host address for the subnet 200.100.10.64/27?

a. 200.100.10.32

b. 200.100.10.95

c. 200.100.10.64

d. 200.100.10.90

Which utility should you use to test whether TCP/IP has been initialized on a computer?

a. ipconfig

b. i nit

c. trace

d. ping

At what point does a DHCP client attempt to renew its leased

a. When 1/2 of the lease period has expired

b. When 3/4 of the lease period has expired

c. When 2/3 of the lease period has expired

d. When 1/3 of the lease period has expired

e. After the lease period has expired

Which address classes cannot be assigned to host computers?

a. Class A and Class B

b. Class B and Class C

c. Class D and Class E

d. Class C and Class D

e. Class A and Class E

Which of the following is a valid unicast IP address?

a. 127.0.0.1

b. 224.50.72.10

c. 172.30.50.15/30

d. 192.168.1.5/30

What is the top-most level of the Internet domain name hierarchy called?

a. Zone

b. Internet domain name

c. The root domain

d. Reverse-lookup zone domain

e. Resolver

What kind of message can an SNMP agent generated?

a. A trace message

b. An SNMP message

c. An alert message

d. A trap message

e. A get message

Your network has an IP of 150.150.0.0 and you need to divide it into multiple subnets. You need 600 host IDs for each subnet, with the largest amount of subnets available. Which subnet mask should you assign?

a. 255.255.224.0

b. 255.255.240.0

c. 255.255.248.0

d. 255.255.252.0

e. 255.255.0.0