Chapter 5 Review Questions

What is the primary function of a bridge? A: Breaks up collision domains B: Allows a NIC or other networking device to connect to a different type of media than it was designed for C: Allows mobile users to connect to a wired network wirelessly D: None of the above

A: Breaks up collision domains

A network device that is used to connect multiple devices together without segmenting a network is a _____________? A: Hub B: Wireless access point C: Switch D: Router

A: Hub

Which of the following is not an advantage of using appliances to offload services like encryption and content filtering? A: Less expensive B: Reduced load on other devices C: Additional functionality D: Better performance

A: Less expensive

What role does the A record in a Domain Name Server (DNS) server have in your network? A: Translates human name to IP address B: Translates IP address to human name C: Enables printing, copying, and faxing from one device D: Controls network packets to optimize performance

A: Translates human name to IP address

What is the most common use for a web proxy? A: Web cache B: Throughput increase C: DHCP services D: Support for user authentication

A: Web cache

Which device should be used if you need to send incoming packets to one or more machines that are hidden behind a single IP address? A: Switch B: Load balancer C: Hub D: Repeater

B: Load balancer

Which of the following is among the benefits of a switch? A: Protects LAN resources from attackers on the Internet B: Provides extra bandwidth C: Reduces throughput D: Allows access to all computers on a LAN

B: Provides extra bandwidth

What is a benefit of multilayer switch (MLS) over a Layer 2 switch? A: Less bandwidth B: Routing functions C: Few features D: Fewer ports

B: Routing functions

Which device is used to segment a network? A: Hub B: Switch C: Repeater D: All of the above

B: Switch

Users arrive at the office after a weekend and the hosts that were shut down over the weekend are restarted but cannot access the LAN or Internet. Hosts that were not shut down are working fine. Where can the problem be? A: The DNS server B: The DHCP server C: The proxy server D: The firewall

B: The DHCP server

Which type of server in your network uses pointer and A records? A: NAT translation server B: IPS/IDS server C: DNS server D: Proxy Server

C: DNS server

Which device does not aid in network segmentation? A: Router B: Switch C: Hub D: Bridge

C: Hub

What advantage does a switch have over a hub? A: It discards frames B: Transmissions received on one port will be sent out all the other ports C: It recognizes frame boundaries and destination MAC addresses of incoming frames D: Any two or more devices the switch connects are capable of causing a collision with each other.

C: It recognizes frame boundaries and destination MAC addresses of incoming frames

Which of the following devices can work at both Layers 2 and 3 of the OSI model? A: Hub B: Switch C: Multilayer switch D: Bridge

C: Multilayer switch

Which of the following is not a term used when making SOHO Internet connections? A: Hub B: Router C: NIC D: Switch

C: NIC Explanation: NICs are the physical network connections for a computer but are not one of the devices or mediums used to provide Internet access in a SOHO setting

Which device creates separate collision domains and a single broadcast domain? A: Hub B: Router C: Switch D: Modem

C: Switch

What is an advantage of using DHCP in a network environment? A: More difficult administration of the network B: Static IP addressing C: Can send an operating system for the PC to boot from D: Assigns IP addresses to hosts

D: Assigns IP addresses to hosts

Which is not an advantage of network segmentation? A: Reducing congestion B: Improving security C: Containing network problems D: Preventing broadcast storms

D: Preventing broadcast storms Explanation: Options A, B, and C all aid in boosting network performance, so the only option left is broadcast storms. Increased traffic will increase LAN congestion

Users on your retook are saturating your bandwidth because they are using too many non-work-related sites. What device would limit availability of the types of sites that users on a LAN have access to while providing granular control over the traffic between the local LAN and the Internet? A: Switch B: DHCP server C: DNS server D: Proxy Server

D: Proxy Server

You need a device that can prevent users from accessing certain websites. Which device should you install? A: Firewall B: IDS C: IPS D: Proxy server

D: Proxy server