Chapter 9
A ____ is a network typically smaller in terms of size and geographic coverage and consists of two or more connected devices. A. Local Area Network B. Office Area Network C. Wide Area Network D. Internal Area Network
A. A Local Area Network is a network typically smaller in terms of size and geographic coverage and consists of two or more connected devices.
A network protocol is ____. A. an agreed upon format for exchanging or transmitting data between systems B. a set of rules that employees must follow to accomplish a specific task C. one of the layers of the OSI model D. one of the headers in an IP packet
A. A network protocol is an agreed upon format for exchanging or transmitting data between systems.
Which of the following statements about the Network Address Translation (NAT) is true? A. It translates private (non-routable) IP addresses into public (routable) IP addresses. B. It translates the IP addresses of one protocol to the IP address of another protocol. C. It is one of the items in an IP packet header. D. It translates MAC addresses to IP addresses.
A. NAT translates private (non-routable) IP addresses into public (routable) IP addresses.
A Class _______ address supports 65,000 hosts on each of the 16,000 networks and allows three sections of the IP address to be devoted to host addressing. A. A B. B C. C D. D
B. Class B addresses support 65,000 hosts on each of the 16,000 networks and allow three sections of the IP address to be devoted to host addressing.
IP addresses are ___ bit numbers. A. 16 B. 32 C. 64 D. 128
B. IP addresses are 32-bit numbers.
How do hackers abuse the ICMP protocol? A. Send internet worms. B. Launch denial of service (DoS) attacks. C. Steal passwords and credit card numbers. D. Send spam.
B. Using the ICMP protocol, hackers can launch denial of service (DoS) attacks.
What is the difference between TCP and UDP packets? A. UDP packets are more widely used. B. TCP packets are smaller and thus more efficient to use. C. TCP packets are "connection-oriented" whereas UDP packets are "connectionless." D. UDP is considered to be more reliable because it performs error checking.
C. TCP packets are "connection-oriented" whereas UDP packets are "connectionless."
Which of the following is NOT a network topology? A. Star B. Ring C. Integrated D. Mixed
C. The different types of network topology includes star, ring, and mixed.
2. The Internet is a worldwide connection of networks. Which statement is not true? A. It is used to transport e-mail, files, financial records, remote access—you name it—from one network to another. B. It is a series of interconnected networks that allows protocols to operate and enable data to flow across it. C. This large web allows users almost infinite ability to communicate between systems. D. It should be considered a trusted network.
D. It should be considered an untrusted network.
True or false? Poor networks are those without any architecture.
False. UDP has very few error-recovery services and guarantees packet delivery.
Fill in the blank. Local Packet Delivery (where packets are delivered on a LAN) uses ________ addresses to send packets
Local Packet Delivery (where packets are delivered on a LAN) uses Media Access Control (MAC) addresses to send packets.
State two benefits of Network Address Translation
Network Address Translation (NAT) improves the security of the network by hiding internal addresses. It also compensates for the lack of IP addresses
Fill in the blank: Remote Packet Delivery (where packets are delivered to a remote location) uses _________ addresses to send packets.
Remote Packet Delivery (where packets are delivered to a remote location) uses IP (Internet protocol) addresses to send packets.
True or false? IP packets are also called datagrams.
True. IP packets are also called datagrams, containing the header and the data section..
True or false? Poor networks are those without any architecture.
True. Larger networks, such as those inside an office complex, may use more than one topology at the same time.