Chapter 7 Review Questions

Question 1

You have just set up a network that will use TCP/IP protocol, and you want client computers to obtain IP configution information automatically. Which type of server do you need for this?

DNS

DHCP

NAT

IP configuration server

Answer 1

DHCP provides IP configuation info clients when they enter the server.

Question 2

Which of the following protocols was designed to access information stored in an information directory, such as employee phone book?

FTP

LDAP

RDP

CIFS

Answer 2

LDAP is used to access information stored in an information database.

Question 3

Which TCP/IP protocol uses port 80?

HTTP

HTTPS

Telnet

POP3

Answer 3

HTTP

Question 4

What is the maximum number of IPv6 addresses that can be assigned to one IPv6 interface?

One (unicast)

Two (unicast and anycast)

Three (unicast, anycast and multicast)

None of the above

Answer 4

None. An IPv6 interface is not limited in the number of addresses that it can assigned, although there maybe limitation based upon practicality.

Question 5

Which of the following are valid examples of IPv6 addresses?

2001:0db8:3c4d:0012:0000:0000:1234:56ab

::ffff:c0a8:173

2001: db8:3c4d:12::1234:56ab
2001: :1ab4::5468

Answer 5

A,B,C. D is incorrect as double colons can only be used once within and address.

Question 6

Which of the following IP addresses would not be valid for a DNS server on the internet?

10. 2511.33
    18: 33:66:254
    155: 118:63:11
    192: 186:12.2

Answer 6

10.25.11.33 as this is in the private IP address range.

Question 7

The workstations on your network are configured to use DHCP server. One of the work stations can’t communicate with other computers. Its IP address is 169.254.1.18. What could be the problem.

The subnet mask is wrong.

It has a private IP address

The default gateway is wrong

It can’t reach the DHCP server.

Answer 7

The IP address is an APIPA address. Microsoft client computers will configure themselves to this address range if they cannot reach a DHCP server.

Question 8

Which of the following protocols is responsible for sending email?

IMAP4

POP3

SMTP

SNMP

Answer 8

SMTP. IMAP4 and POP3 both receive mail and SNMP is a network management protocol.

Question 9

What port does RDP work on?

53

143

389

3389

Answer 9

3389. DNS works on 53, IMAP works on 143 and LDAP works on 389

Question 10

Which two TCP/IP protocols work at the host-host layer of the DoD model?

IP

ARP

TCP

UDP

Answer 10

TCP and UDP. IP and ARP both work at the internet layer

Question 11

What are the two advantages TCP has over UDP?

Acknowledged Delivery

Faster delivery

Lower Overhead

Virtual circuits

Answer 11

Acknoeledged Delivery and Virtual Circuits. It is slower and has higher overheads than UDP.

Question 12

Your friend is concerned about the security of making an online purchase. What should you tell them to look for in the address bar of the web browser?

HTTP

HTTPS

SSH

TLS

Answer 12

HTTPS

Question 13

You are manually configuring a TCP/IP host. Another administrator gives you the router’s IP address. What is the TCP/IP term for this?

Default Gateway

Subnet mask

DNS server

DHCP server

Answer 13

Default gateway

Question 14

Your network is running IPv4. Which of the configuration options are mandatory for you host to communicate on the network?

IP address

Subnet mask

Default Gateway

DNS server address

Answer 14

IP address and subnet mask. The other are neeed if you’re going to connect to another server.

Question 15

Which of the following protocols is used for secure delivery of email?

SMTP

SNMP

POP3

IMAP4

Answer 15

POP3 and IMAP4 are for the delivery of emails but IMAP4 is the only one that provides security features.

Question 16

Which of the following is the name of a secure point-point connection made over a public network?

NAT

APIPA

VLAN

VPN

Answer 16

VPN. Virtual provate networks make secure point-point connections over public networks. VLAN is a Virtual Local Area Network. NAT translates private IP’s to public and IPIPA is an automatic IP address provider when a client cannot reach a DHCP server.

Question 17

Which of the following uses port 23?

Telnet

SSH

FTP

DNS

Answer 17

Telnet. SSH uses port 22, FTP uses ports 20-21 and DNS uses port 53

Question 18

Which of the following is an IPv6 broadcast address?

::1

FE80::

::FFFF

None of the above

Answer 18

None. IPv6 does not have broadcasts. It does have multicasts, which are a bit like targeted broadcasts.

Question 19

You’re setting up a small network that will not connect to the internet. You want computers to be able to reach each other by using hostnames. What service will do this?

DNS

DHCP

FTP

APIPA

Answer 19

DNS. DNS is typically know as a name resolver on the internet, but it will work on private networks as well. DNS resolves hostnames to IP addresses.

Question 20

Which of the following protocols is responsible for resolving IP addresses to hardware addresses?

DNS

DHCP

ARP

RARP

Answer 20

ARP. Address Resolution Protocol resolves IP addresses to hardware (MAC). RARP does the opposite. DNS resolves hostnames to IP addresses and DHCP automatically configures TCP/IP clients.